National Code & Number Change Framework Document
Issue 20th March 2001
Code and Number Changes for Geographic, Mobile, Paging, Special
Rate and Premium Rate Services
1. Introduction
1.1 Background
The Director General’s Statement The National Numbering Scheme, January 1997, set out OFTEL
policy for the rationalisation of the UK Specified Numbering Scheme. The policy was formalised
through the publication of the revised Numbering Conventions, April 1997. This document sets out
the key elements of that policy and subsequent developments to be used by the Telecommunications
operators, represented by the National Code & Number Change Working Groups in the preparation
of Technical and Communications Implementation Plans in respect of changes to numbering for
geographic, mobile, paging, personal numbering, Special Rate and Premium Rate services.
The Framework document is produced specifically for operators who are familiar with the
detailed technical issues. Other readers are referred to information published by the NCNC
project, see paragraph 1.3, and are advised to contact their operators for specific information
on number migration. It refers only to those numbers which are affected by migration to new
ranges or are to be discontinued without direct replacements; codes which are not referred to
can be assumed not to be changing.
This document will be re-issued as necessary to include points of clarification or further definition.
You are advised to check the following OFTEL web page for the current issue.
http://www.oftel.gov.uk/numbers/ncnc698.htm
Queries about this document should be made to:OFTEL Numbering Unit
50 Ludgate Hill London EC4M 7JJ
Tel: (020) 7634 8919
EMAIL: numbers.oftel@gtnet.gov.uk
Fax: (020) 7634 8784
The Numbering Conventions and other numbering related documents are available on OFTEL’s
Internet pages (http://www.oftel.gov.uk) and from the OFTEL Research and Intelligence Unit.
Tel: (020) 7634 8761.
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Issue 20th March 2001
Page 1
This document is Crown Copyright. Permission to reproduce the document is granted for the
purpose of facilitating the necessary changes.
1.2 Project Administration
The changes are to be managed by the National Code & Number Change Industry Steering Group,
set up by the telecommunications industry in consultation with OFTEL. This has several entities:
 The Technical Working Group, responsible for Technical issues;
 The Communications Working Group, responsible for Communications issues;
 The Programme Office, responsible for co-ordination and issue of documentation.
OFTEL attends the Steering, Technical and Communication Working Groups with observer status.
1.3 The Programme Office
This is contracted by the National Code & Number Change Steering Group to Logica (UK) Limited.
The point of contact is:Programme Office, National Code & Number Change
Logica UK Limited, 75 Hampstead Road,
London NW1 2PL
Tel: (020) 7446 1602
Fax: (020) 7344 3621
EMAIL: numbering@logica.com
The NCNC organisation publishes relevant information to maintainers and end users, for example: 
An overall view of the changes: http://www.numberchange.org/

A translation list of old to new ranges:http://www.numberchange.org/what/changeslist.xls

A summary of key dates:http://www.numberchange.org/when/keydates.xls

Customer's Premises Equipment issues:http://www.numberchange.org/html-docs/business/index.html
1.4 Status of Framework Document
This Framework Document is produced by OFTEL, to define what is required to happen, and the
necessary time-scales. OFTEL has approved the following Technical Working Group
implementation publications as definitive documents supplementing the objectives of the OFTEL
Framework document:  TG(98)24 Geographic Implementation
 TM(98)09 Mobile Implementation
 TP(98)10 Pager Implementation
Requests from licensed operators for issue of these documents should be addressed to the National
Code & Number Change Programme Office.
1.5 The structure of the Framework document
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Issue 20th March 2001
Page 2
Geographic changes, migration of (01XX), (01XXX) and (01XXXX) to (02X), section 2
 Paging changes, migration to 076, section 3
 Mobile changes, migration to 077 - 079, section 3
 Special Rate services, migration to 08 range, section 4
 Premium Rate services, migration to 090X range, section 5
 Codes to be discontinued, section 6
 Annex 1, record of changes to Framework document
1.6 Changes excluded from the National Code & Number Change Programme
These are: 6-digit conversion of BT’s remaining 5-digit Geographic number ranges1, with the
exception of Northern Ireland2
 Access code changes resulting from the Access code review
 0500 and 0800 changes resulting from Freephone review
1.7 Notifications of bringing into service
OFTEL is responsible for notifying all overseas administrations, which are Member states of the
International Telecommunications Union of the new codes and time-scales. This is undertaken,
where possible, through the ITU-T operational bulletin or by direct contact with administrations that
do not receive the bulletin. However, this does not guarantee that overseas operators make the
necessary arrangements to route the new codes, as many are not ITU-T members. Past experience
in the 1995 PhONEday was that several overseas operators had not taken the notifications into
account.
Operators are reminded, that as a licence condition, described in A6.1 of the Numbering
Conventions3, it is the responsibility of the holder of the allocation to negotiate with and to notify,
where appropriate, overseas authorities about the implementation of allocations within the timescales agreed between the organisation and the operators concerned.
1.8 International ISDN prefix
At present the breakout code for international ISDN data calls is 000. In view of the ITU-T
recommendation that allows the introduction of country codes in the range 0XX from the year 2001,
it is necessary to harmonise the ISDN prefix to 00 within the time-scales of the NCNC program.
Parallel running of the 00 new prefix started on 22 April 2000 and termination of use of 000 was
required by 30 September 2000.
1.9 New Provision Regarding Number Changes for Textphones
Operators are reminded that proposals to meet European requirements have been forwarded to the
DTI by way of draft licence conditions to ensure that announcements are made in a form suitable for
textphone users, by January 2001 at the latest. Operators are encouraged to make announcements
available to textphone users in accordance with existing plans and timings for conventional
announcements.
2. CODE CHANGES FOR GEOGRAPHIC RANGES, MIGRATION TO 02 RANGE
2.1 The changes
1
OFTEL Numbering Conventions B3.6 require remaining 5-digit local numbers to be removed by April 2005.
All Northern Ireland 5-digit ranges will move to 8-digit behind the code (028)
3 OFTEL Numbering Conventions, April 1997
2
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Issue 20th March 2001
Page 3
Existing numbers in the following areas are to change to the new (02X) short codes, with 8-digit
local dialling, i.e. (02X) XXXX XXXX: Area
Old Code
New Code
Coventry
Cardiff
Belfast and all of Northern Ireland
Southampton
Portsmouth
Inner London
Outer London
(01203)
(01222)
(01232), etc.
(01703)
(01705)
(0171)
(0181)
(024)
(029)
(028)
(023)
(023)
(020)
(020)
Existing Number
Prefix
76
20
see paragraph 2.13
80
92
7
8
2.2 The Time scales
Where possible, a common approach and identical dates are defined for each area affected by the
change. This is to maximise the effect of publicity, by ensuring a common approach, and to
accommodate the expectations of consumers who may commute between several of the areas
involved. The milestones are:  Start of Parallel Running, for old numbers 01 June 1999 (in National Dialling form only);
 Code Change, Flash Change of local numbers, April 22 2000;
 Phased end of Parallel Running, between 5 August 2000 and 14 October 2000 - dependent upon
location.
2.3 Introduction of new (02X) Capacity
Capacity in the range (02X) 0000 to (02X) 1999 will be made available to operators for use in test
and other applications where local dialling is not necessary. In line with principles adopted under
previous code changes, OFTEL will not issue other 02X numbers where there is no 01 equivalent
range until remaining old number capacity has been used. In most areas, this is not expected to
happen until some time after the end of parallel running.
2.4 Start of parallel running, June 01 1999
Operators are required to confirm (to the National Code & Number Steering Group) that calls to
(02X) numbers will route as per the (01X) equivalent by the start of Parallel Running.
Operators should ensure that:  Old numbers shall continue to be open to local and national dialling;
 New 8-digit numbers generated by a temporary overlay shall be open to local 8-digit, as well as
national dialling;
 No local dialling is introduced between old and new numbers;
 Parallel running is for national dialled calls only .
Operators and user groups are advised that: As a migration path is not available in the current London capacity, 8-digit local numbers dialled
from an “old number” exchange connection will misroute, possibly to existing 7-digit numbers;
 In the other areas, the necessary migration paths have been protected by OFTEL, hence such calls
are required to be trapped or time out;
 Old numbers dialled from an 8-digit exchange connection will time-out, as will old numbers
dialled with the new (02X) code.
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Local dialling prior to 22 April 2000 is only possible with the existing (01) range
numbers, i.e. 5, 6 or 7-digit depending on the area. Up to this date, calls made
using the (02) equivalents will also route correctly when dialled in full national
format.
2.5 Code Change confirmed, Flash Change of local numbers 22 April 2000
From 22 April 2000 local dialling is only possible with the new (02) range
numbers, i.e. 8-digit. Until the end of parallel running, calls made using the (01)
equivalents will also route correctly when dialled in full national format.
Special arrangements apply to Northern Ireland, where 8-digit local dialling
will be limited to the original (01) area until the end of parallel running.
Operators shall arrange at this stage for an instantaneous flash change of local numbers as follows: local number dialling of old number ceases, i.e. national dialling of old codes & numbers only;
 local and national number dialling of new 8-digit numbers continues.
The implications of these arrangements are: IN LONDON
 Old 7-digit numbers dialled locally shall time-out or be trapped;
 Old 7-digit numbers dialled with the (020) code shall time out or be trapped;
 New 8-digit numbers dialled with the old code (0171) or (0181) will misroute.
OTHER AREAS
 Old numbers dialled locally shall be trapped and receive an announcement;
 Old numbers dialled with new code shall be trapped and receive an announcement;
 New numbers dialled with old code shall be trapped and receive an announcement.
ANNOUNCEMENT
Flash change announcements for misdialled local numbers in all code areas to be ceased between
12:00 noon on Friday 23 March 2001 and 12:00 noon on Monday 26 March 2001, the timing being
at the discretion of each operator.
2.6 Phasing out of Parallel Running
In Northern Ireland, inter-area code free dialling will commence from 16
September 2000.
The (01) codes described in section 2.1 are to be withdrawn in line with the following schedule:Area
Cardiff
Coventry
Portsmouth & Southampton
Northern Ireland
Inner & Outer London
Date
5 August 2000
19 August 2000
2 September 2000
16 September 2000
14 October 2000
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Issue 20th March 2001
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At the end of parallel running, operators shall arrange for: 



The use of the old codes to cease;
The use of old numbers to cease;
Any calls made to an old number to time out, or be trapped;
Call trapping arrangements to continue for at least a further period of 12 months.
2.7 Call Trapping and announcements, during and after parallel running
Operators shall trap misdialled calls where practicable, and ensure that an appropriate
announcement is given. Once parallel running has ended (see paragraph 2.6), operators shall trap
old codes and provide announcements. Announcements shall be maintained provisionally for a
period of 12 months; the actual date(s) for removal will be announced by OFTEL following
feedback from operators on misdialling patterns.
2.8 Calling Line Identity, CLI
Prior to the Flash Change, CLI where supplied, should reflect the default (01) range. CLI will be
progressively changed between 22 April 2000 and the end of parallel running to reflect the new (02)
range. Users of CLI critical applications are advised that it may be necessary to allow for both old
and new range CLI's during this phase to allow for differing time-scales between operators and the
effects of number portability.
2.9 Locally dialled calls in (023) and (028) areas
Maintainers of PBX equipment in the (023) and (028) areas may wish to bar local dialling of nonlocally charged calls, to ensure continued efficiency of least cost routing equipment.
DETAILS ON EACH AREA
2.10 London, (020)
2.10.1 Use of Temporary Overlay capacity, if required.
This paragraph is redundant, overlay capacity was not required.
2.10.2 Parallel running
Existing Inner and Outer London numbers will be required to run in parallel with nationally dialled
8-digit equivalents behind the code (020) on 1 June 1999. Existing Inner London numbers, in the
range (0171) XXX XXXX, will become (020) 7XXX XXXX and existing Outer London numbers,
in the range (0181) XXX XXXX, will become (020) 8XXX XXXX.
2.10.3 Split between Inner and Outer London
The future of the existing split between Inner and Outer London is to be reviewed by OFTEL.
Operators should note that present arrangements require that (020) 7XXX XXXX numbers to be
used in the (0171) Inner London area, and (020) 8XXX XXXX numbers to be used in the (0181)
Outer London area.
2.11 Coventry, (024)
2.11.1 Use of temporary overlay capacity, if required.
This paragraph is redundant. Overlay capacity was not required.
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Issue 20th March 2001
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2.11.2 Parallel running
Existing 6-digit Coventry numbers will migrate to (024) 76XX XXXX.
2.12 Southampton and Portsmouth, (023)
2.12.1 Use of temporary overlay capacity, if required.
This paragraph is redundant. Overlay capacity was not required.
2.12.2 Parallel running
Existing 6-digit Portsmouth numbers will become (023) 92XX XXXX, and existing 6-digit
Southampton numbers will become (023) 80XX XXXX.
2.12.3 End of parallel running
Operators are requested to note the requirement, that after the end of parallel running, dialling
between Portsmouth and Southampton must be possible without use of the (023) code.
(Numbering Conventions B3.5)
2.13 Belfast and all of Northern Ireland, (028)
2.13.1 Use of temporary overlay capacity, if required.
This paragraph is redundant. Overlay capacity was not required..
2.13.2 Parallel running
6-digit Belfast numbers will migrate to (028) 90XX XXXX. Elsewhere in Northern Ireland, the
codes will migrate to a scheme as below. The scheme is designed to give a general indication,
approximating to the county boundaries of the location of the number.
Number Prefixes for Northern Ireland
Number
Prefix
Existing Code
& Range
Padding
Digit*
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
012657
012667
N/A
N/A
N/A
01266 3,4*,6,8
N/A
012656
01574
012665
01693 2,3,6*,8
N/A
N/A
N/A
N/A
N/A
N/A
01861
01762
7
7
N/A
N/A
N/A
6*
N/A
6
N/A
5
2*
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Vicinity
Antrim
Antrim
Not assigned
Not assigned
Not assigned
Antrim
Not assigned
Antrim
Antrim
Londonderry
Armagh
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Armagh
Armagh
Call Area
Ballycastle
Martinstown
Not assigned
Not assigned
Not assigned
Ballymena
Not assigned
Ballymoney
Larne
Kilrea
Newry
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Armagh
Portadown
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Issue 20th March 2001
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39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
N/A
018206
016937
012477
013967
01396 5,6,8
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
01365 3,4
013657
013656
N/A
01265
2,3,4*,5*,8
01504 2,3,6,8
N/A
N/A
N/A
N/A
N/A
015047
N/A
01648
2*,3*,4*,5*
016627
016626
01662 2,4,8
N/A
N/A
016625
016487
01868
N/A
6
7
7
7
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
7
6
N/A
3*
Not assigned
Down
Down
Down
Down
Down
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Fermanagh
Fermanagh
Fermanagh
Not assigned
Londonderry
Not assigned
Banbridge
Rostrevor
Kircubbin
Newcastle
Downpatrick
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Enniskillen
Lisnaskea
Kesh
Not assigned
Coleraine
N/A
N/A
N/A
N/A
N/A
N/A
7
N/A
6*
Londonderry
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Londonderry
Not assigned
Londonderry
Londonderry
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Limavady
Not assigned
Magherafelt
7
6
N/A
N/A
N/A
5
7
N/A
Tyrone
Tyrone
Tyrone
Not assigned
Not assigned
Tyrone
Tyrone
Tyrone
Carrickmore
Newtownstewart
Omagh
Not assigned
Not assigned
Ballygawley
Cookstown
Dungannon
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Issue 20th March 2001
Page 8
88
89
90
91
92
93
94
95
96
97
98
99
N/A
013655
01232
01247 2,4,5,8
01846
01960
01849
01232
N/A
01238
N/A
N/A
N/A
5
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Not assigned
Tyrone
Belfast district
Down
Antrim
Antrim
Antrim
Belfast district
Belfast district
Down
Belfast district
Unusable
Not assigned
Fivemiletown
Belfast City
Bangor
Lisburn
Ballyclare
Antrim
Belfast (expansion)
Belfast (expansion)
Saintfield
Belfast (expansion)
Unusable
*In 0SABC code areas, those D ranges annotated * are 5-digit local numbers, with the exception of Magherafelt, 01648
where the D ranges currently contain both 5 and 6-digit local numbers. The padding digit is only used before those
numbers, which are 5-digit. In 0SABCD codes, i.e. "Mixed" Areas all local numbers are 5-digit and hence get the
padding digit.
2.13.3 Code Change confirmed, Flash Change
The old 5- and 6-digit numbers will only function if full national dialling is used.
2.13.4 End of parallel running
Old numbers throughout Northern Ireland cease by this date. Operators are requested to note the
requirement, that after the end of parallel running, dialling between all areas in Northern Ireland
must be possible without use of the (028) code. (Numbering Conventions B3.5)
2.14 Cardiff, (029)
2.14.1 Use of temporary overlay capacity, if required
This paragraph is redundant. Overlay capacity was not required.
2.14.2 Parallel running
Existing 6-digit Cardiff numbers will migrate to (029) 20XX XXXX.
2.14.3 Use of (029) code for other areas in Wales
The (029) code is currently reserved for the possibility of other areas in Wales changing to this code
when needed, and if appropriate, the introduction of a full All Wales code at some future point.
There are no plans to use (029) for any other areas within the time-scale of the National Code &
Number Change programme.
2.15 Migration arrangements for Geographic ranges used for full national dialling
Certain ranges are set aside for use in full national dialled format only. These ranges are to continue
in service until the end of parallel running. The equivalent conventional translation, which would
result in locally diallable ranges, must not be programmed. Operators have been issued with
allocation certificates for the replacement ranges, which shall be affected on removal of the old
ranges as follows:Old Range
01203 00-19
01222 00-19
New Range
024 1000-1019
029 1000-1019
Withdrawal date
19th August 2000
5th August 2000
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Issue 20th March 2001
Page 9
01232 00-19
01703 00-19
01705 00-19
0171 0XX
0171 1XX
0181 0XX
0181 1XX
028 1000-1019
023 1100-1119
023 1000-1019
020 01XX
020 11XX
020 00XX
020 10XX
16th September 2000
2nd September 2000
2nd September 2000
14th October 2000
14th October 2000
14th October 2000
14th October 2000
3. CODE CHANGES FOR PAGING & MOBILE RANGES, MIGRATION TO 07 RANGE
3.1 The Time-scales
 Start of parallel running, for all mobile and paging numbers no later than 30 September 1999;
 Parallel running shall be maintained until 28 April 2001.
Operators may, taking account of the needs of their customer base, begin parallel running earlier.
Operators are required to end parallel running in time-scales consistent across the numbering range,
not on an individual basis, and to respect the parallel-running and sunset dates provided by other
operators from whom they have ported customer numbers.
3.2 Start of Parallel Running
Operators should ensure that:
 Existing non-07 codes shall continue to be open for dialling;
 07 migration codes shall become available for dialling;
 Existing 07 codes shall continue to be open for dialling.
3.3 End of Parallel Running
Operators should ensure that:
 The use of non-07 codes shall cease;
 Calls to non-07 numbers shall receive a changed-number announcement;
 07 migration codes shall continue to be open for dialling;
 Existing 07 codes shall continue to be open for dialling.
On the termination of parallel running (28 April 2001), all operators shall trap old codes and
provide appropriate announcements. Announcements shall be maintained provisionally for a period
of 12 months; the actual date(s) for removal will be announced by OFTEL following feedback from
operators on misdialling patterns.
3.4 Mobile Ranges, 077, 078, 079
3.4.1 07 codes for new allocations by operators have been issued by OFTEL since May
1997. All mobile operators are required to use these for all new allocations as soon as practicable.
3.4.2 All mobile services are required to use only 07 codes by no later than 28 April 2001. With the
effects of churn and the continuing growth in new users, many mobile customers will be using 07
numbers by 28 April 2001 without the need for a forced change.
3.4.3 Migration paths
These are listed below: -
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Issue 20th March 2001
Page 10
Vodafone
0370

07770
Vodafone

07774
Vodafone
0374 X*
(for X= 0-4, 6-9)
0378

07778
Vodafone
0385

07785
Cellnet
0401

07701
Cellnet
0402

07702
Cellnet
0403

07703
Cellnet
0410

07710
Cellnet
0411

07711
Vodafone
0421

07721
Vodafone
0441

07741
Guernsey Telecom
04481

07781
Manx Telecom
0462 4

07624
Vodafone
0467

07767
Vodafone
0468

07768
Vodafone
0498

07798
Cellnet
0585

07885
Cellnet
0589

07889
Cellnet
0802

07802
Vodafone
0831

07831
Vodafone
0836

07836
Cellnet
0850

07850
Cellnet
0860

07860
One2One
0930 7

07930 7
One2One
0956 X**
(for X= 1-6,8,9)
0958

07956 X

07958

07961
Orange
0961 X***
(for X= 0-6,8,9)
0966

07966
Orange
0973

07973
Orange
0976

07976
Jersey Telecom
0979

07797
One2One
One2One
* 0374 5 see entry under paragraph 4.4.1
** 0956 7 is a Personal Numbering code, see paragraph 3.6.2. There is no range 0956 0.
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Issue 20th March 2001
Page 11
*** 0961 7 is currently being mirrored to 0930 7. Operators should provide a generic
announcement.
3.4.4 The arrangements in this Framework document should apply to analogue and digital
services.
3.5 Paging
3.5.1 076 Paging Substructure
076 codes for new allocations by operators have been issued by OFTEL since May 1997. The
Paging substructure is as follows:New
Code
0760
Use
New allocations – Free to Caller tariff
0761
Reserved for future expansion
0762*
Used for migration
0763
Reserved for future expansion
0764
New allocations and migration up to National
Rate
Used for migration
0765
0767
New allocations – Above National Rate tariff and
specially tariffed paging services including CPP
New allocations including CPP
0768
Reserved for future expansion
0769
Used for migration
0766
*Includes Manx Telecom allocation of 07624 for ‘find me anywhere’ services.
3.5.2
Migration path for existing paging codes
Old code
New code
01399 X*
(for X=1,2,3,4,5,6,7,8,9)
01426
07699 X
01459
07659
01523
07623
01893
07693
0336 7**
07663 7
04325
07625
0660***
07661
0839***
07661
07626
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0881 X***
(for X = 0,4,8)
0941
07681
07641
*For 01399 0, see section 6.1
**Migration path for 0336 7. For detail of PRS migration, 0336 0-6, 8, 9 refer to Vodafone, see
section 5.2
*** Migration path for Page One numbers only. Range also contains PRS numbers. For detail of
PRS migration refer to C&W, see section 5.2. Originating operators shall provide a generic, rather
than range specific, announcement on these codes.
3.6 Personal Numbering
3.6.1 Most Personal Numbering services already use the 070 codes therefore few changes will be
required.
3.6.2 The Personal Numbering services in the range 0956 7 will migrate into the existing Flextel
range 07010 7 in the following time-scales:-.
 Start of parallel running, no later than 30 September 1999;
 Parallel running shall be maintained until 28 April 2001.
Announcement arrangements are as defined in section 3.3.
4. CODE CHANGES FOR SPECIAL RATE SERVICE RANGES, MIGRATION TO 08
RANGE
4.1 0800 and 0500 Freephone
These codes are subject to ongoing consultation and are not affected by the National Code and
Number Change programme.
4.2 0321 to 08080 migration, Freephone
4.2.1 Migration path
Old Code
0321 XXXXXX
Migration Path
0808 0XXXXXX
Operator
Vodafone
4.2.2 Time-scales, call trapping and announcements
 Start of parallel running, no later than 30 June 1999;
 Parallel running shall be maintained until 28 April 2001.
On the termination of parallel running (28 April 2001), all operators shall trap the old code and
provide an appropriate announcement. The announcement shall be maintained provisionally for a
period of 12 months; the actual date for removal will be determined by OFTEL following feedback
from operators on misdialling patterns.
4.3 0345 & 0645 to 0845 migration, Local Call rate
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4.3.1 Migration paths
Old Code
Migration Path
Operator
0345 XXXXXX
0845 7XXXXXX
BT
0645 XXXXXX
0845 9XXXXXX
C&W
4.3.2 Time-scales, call trapping and announcements
 Start of parallel running, no later than 30 June 1999;
 Parallel running shall be maintained until 28 April 2001.
On the termination of parallel running (28 April 2001), operators may route old codes to original
rangeholders to allow provision of appropriate announcements. Rangeholders must ensure the call
is terminated with no answer and no charge. Announcements shall be maintained provisionally for
a period of 12 months; the actual date(s) for removal will be determined by OFTEL following
feedback from operators on misdialling patterns.
4.4 0990 etc. migration to 0870, National Rate
4.4.1 Migration Path
Old Code
New Code
Operator
0374 50-57, 59
08704* 50-57, 59
Vodafone Value Added Services
0541 5
0870 15
C&W
0990
0870 5
BT
*08704 58 is allocated to First Telecom and is not affected by migration plans.
4.4.2 Time-scales, call trapping and announcements
 Start of parallel running, no later than 30 June 1999;
 Parallel running shall be maintained until 28 April 2001.
On the termination of parallel running (28 April 2001), operators may route old codes to original
rangeholders to allow provision of appropriate announcements. Rangeholders must ensure the call
is terminated with no answer and no charge. Announcements shall be maintained provisionally for
a period of 12 months; the actual date(s) for removal will be determined by OFTEL following
feedback from operators on misdialling patterns.
5. CODE CHANGES FOR PREMIUM RATE RANGES, MIGRATION TO 090 RANGE
5.1 Time-scales, call trapping and announcements
 Start of parallel running, no later than 30 September 1998;
 Parallel running shall be maintained until 28 April 2001.
On the termination of parallel running (28 April 2001), ALL operators shall trap old codes and
provide appropriate announcements or Number Unobtainable. Where announcements are used,
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these shall be maintained provisionally for a period of 12 months; the actual date(s) for removal will
be determined by OFTEL following feedback from operators on misdialling patterns.
5.2 Old PRS numbering ranges
The following ranges are affected by the NCNC programme:0331
0632
0336 X*
0640
0696
0839**
0890
0895
0898
0853
0891
0896
0930 X***
(X = 0-6, 8, 9)
0338
(X= 0-6, 8, 9)
0660**
0881**
0894
0897
0991
Detail on the any required migration arrangements to the new 090X ranges will be advised by
operators in line with the substructure shown in Paragraph 5.3.
* 0336 7 is a pager range, migration defined in paragraph 3.5.2
** Parts of 0660, 0839 and 0881 are pager ranges, defined in paragraph 3.5.2. Originating operators
shall provide a generic, rather than range specific, announcement on these codes.
*** 0930 7 is a mobile range, migration defined in paragraph 3.4.3
5.3 New 090X numbering range substructure
Prices quoted in the following table are inclusive of VAT at 17.5%
0900
0901
0902
Time charged calls up to and including 60ppm and total
call cost not greater than £5 or fixed fee up to £1 per call
Designated PRS expansion*
0903
Designated PRS expansion
0904
Designated PRS expansion
0905**
Open ended time dependent charge or fixed fee any rate
0906
Open ended time dependent charge or fixed fee any rate
0907
Pay for Product >£1
0908
Designated PRS expansion
0909
Adult all types and charge rates
* See Section 6.1
** New range open from September 1999
5.4 Code 0918 1
This existing code (BT SMDS) will remain unchanged.
5.5 New range 091
This range is now in service for Premium Rate non-content services. There are no migrations into
this range.
6. CODES WITHOUT DEFINED MIGRATION PATHS
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6.1 Several other codes, if still in service, will be discontinued on 28 April 2001. These codes have
not been allocated a direct replacement:(Refer to operator for further details)
Code
01399 0
0390
0408
0456
0910
0958 0
0958 1
Operator
BT
One2One
One2One
Comment
Withdrawn
Withdrawn
Withdrawn
Withdrawn
Phonebase, code to be discontinued by 28 April 2001
Freephone, code to be discontinued on 28 April 2001
Local rate, code to be discontinued on 28 April 2001
ANNEX 1
Record of significant changes to Framework document
Changes made in Issue 18th June 1998 compared with issue 6th June 1998
1) Paragraph 1.5, Reference added to addition of Annex 1
2) Paragraph 1.6, reference to 0500 and 0800 deleted.
3) Paragraph 2.2, start of Parallel running confirmed for 1 June 1999.
4) Paragraph 3.4.3,
 The entry for 0374 code is simplified.
 The reference to 0390 code is deleted.
 The reference to 0930 7 code is deleted.
5) Paragraph 3.5.2, reference to 0374 deleted
6) Paragraph 4.1, reworded to confirm current status of 0500 and 0800.
7) Paragraph 4.2,
 New entry, migration of 0321 added
 Paragraph 4.2, renumbered 4.3
 Paragraph 4.3, renumbered 4.4
8) Paragraph 4.5 (new) Reference to 01399 0 added
Changes made in Issue 7th July 1998 compared with issue June 18th 1998
1) Paragraph 2.3 Role of Temporary Overlays clarified.
2) Paragraph 2.4 Date for start of parallel running confirmed as 01 June 1998
3) Paragraph 2.6 End dates for parallel running now confirmed
4) Paragraph 2.10.1.2 Deleted, and remaining paragraphs in paragraph 2.10 renumbered
5) Paragraph 3.4.3, Reference to 0930 7 re-entered, Reference to 0408 deleted
6) Paragraph 3.6.2 Status of Personal Numbering Services 0956 7 confirmed
7) Paragraph 4.3.1, reference to 01399 8 deleted
8) Paragraph 4.5 status of 01399 0 confirmed.
Changes made in Issue 1st October 1998 compared with issue 7th July 1998
1) Paragraph 1.1, Copyright statement added.
2) Paragraph 1.8, Time-scales for use of 00 for International ISDN prefix confirmed.
3) Paragraph 3.5.1 Reference to 07624 added
4) Paragraph 4.3.1 Reference to 0845 74 migration deleted
5) Paragraph 5.2 Further clarification of PRS ranges.
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Changes made in Issue 1st December 1998 compared with issue 1st October 1998
1) Paragraph 1.9 Reference made to “New Provision Regarding Number Changes for
Textphones”
2) Paragraph 2.3 Further clarification to emphasise that OFTEL will not issue new (02X) Capacity
until an area faces exhaustion, or 22 April 2000, whichever is first.
Changes made in Issue 26th March 1999 compared with issue 1st December 1998
(Note, minor editorial changes made 8th April, Rev 1)
1.
2.
3.
4.
5.
6.
Paragraph 1.1, statement on codes not affected by the programme.
Paragraph 1.5, reference to new section 6 added
Paragraph 1.6, reference to 0500 and 0800 Free phone review added.
Paragraph 1.8, reference to international ISDN data calls and confirmation of dates
Paragraph 2.3, Revised statement on Introduction of 02X capacity.
Paragraph 2.13.2
 Number prefix 66 only applies to 01365 3,4, reference to level 8 deleted.
 Additional explanation given on padding digits.
 Reference to level 4 in code 015404 deleted
7. Paragraph 3.4.3, Reference to 0448 1, 0462 4, 0979 codes added.
8. Paragraph 4.1, reference to 0500 and 0800 Free phone review amended.
9. Paragraph 5.2, reference to “any migration” changed to “any required migration”
10. New Section 6 added to list codes without defined migration paths.
Changes made in Issue 28th May 1999 compared with issue 26th March 1999, Revision 1
Paragraph 1.1, Clarification of the purpose of Framework document added.
Paragraph 2.2, Deletion of reference to potential use of Overlay Capacity
Paragraph 2.3, Further clarification on OFTEL policy on issue of new (02X) capacity.
Paragraph 2.4 2.5,2.6, Clarification of local dialling before and after Flash Change added
Paragraphs 2.10.1, 2.11.1, 2.12.1, 2.13.1, 2.14.1, reference to Overlay Capacity amended
Paragraph 2.13.2, Further clarification of use of padding digits in Northern Ireland added.
Paragraph 2.8, Further clarification on CLI.
Paragraph 3.1, End of Parallel running for paging and mobile ranges confirmed as 28 April 2001.
Paragraph 3.4.3, Reference to 0836 4 added
Paragraph 3.6, End of Parallel running for personal numbering range 0956 7 confirmed as 28 April
2001.
Paragraph 4.4.2, End of Parallel running for Special Rate Services ranges confirmed as 28 April
2001.
Paragraph 4.5, Revised status for future migration of 01399 0 range.
Paragraph 5.1, End of Parallel running for Premium Range Services confirmed as 28 April 2001.
Paragraph 5.4, (new) Reference to 0918 added
Paragraph 6.1, Change of migration status for 01399 0 added. Reference to 0918 deleted
Changes made in Issue 19th August 1999 Revision 3 compared with issue 28th May 1999
(Minor editorial changes made on 24th August, Revision 1, 25th August, Revision 2 and 9th
September, Revision 3)
Page 3 Footnote reference to Carlisle deleted (implemented)
Paragraph 2.13.2, Deletion of reference to protected blocks; deletion of 5* and 7* from prefix 25.
D range 5 changed to 5* in prefix 79, code 01648
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Paragraph 3.4.3, changes to detail of 0374, 0421, 0467, and 0836
Paragraph 3.5.2, reference to 0336 7, 0839, 0660 added
Paragraph 4.4.1 further detail on 0374
Paragraph 5.2 reference to 0660, 0836, 0839 deleted
Paragraph 5.3,Range 0905 is now active
Paragraph 5.4, Further clarification
Paragraph 6.1, 01399 0 status confirmed, reference to 0432 and 0836 deleted. Date 28/04/2004
replaced by 28/04/2001
Changes made in Issue 10th November 1999 compared with issue 19th August 1999 Revision 3
Paragraph 3.5.2 Further clarification on 0336 7, 0660 and 0839
Paragraph 5.2 Reference to 0660 and 0839 reinserted
Changes made in Issue 22 December 1999 compared with issue 10th November 1999
Paragraph 2.7 Redefined to give requirements for call trapping and announcements, during and
after parallel running.
Heading to section 3 Amended to include reference to personal numbers
Paragraphs 3.3, 3.6.2, 4.3.2, 4.4.1 Redefined to give requirements for call trapping and
announcements, from end of parallel running, 28/04/2001.
Paragraph 5.5 (new) Reference to opening up of new 091 range, no migrations involved.
Changes made in Issue 5th April 2000 compared with issue 22nd December 1999
Paragraph 2.15 New paragraph added, defining migration arrangements for Geographic ranges
issued for full National dialling applications.
Changes made in Issue 12th May 2000 compared with issue 5th April 2000, Revision 1
Paragraph 2.15 Migration range for 01222 00-19 amended to 029 1000-1019
Paragraph 3.5.2 Reference to paging content of 0881 added, which migrates to 07681
Paragraph 5.2 Reference to paging content of 0881 added
Changes made in Issue 4th October 2000 compared with issue 12th May 2000
Paragraph 4.3.2 Change to announcement arrangements for Special Rate Services, applies 28 April
2001
Paragraph 5.1 Clarification of announcement arrangements for Premium Rate Services
Changes made in Issue 14th February 2001 compared with issue 4th October 2000
Paragraph 2.5 Ceasing of flash change announcement for misdialled local calls
Paragraph 3.4.3 Change to detail of 0961
Paragraphs 3.5.2 & 5.2 footnotes Clarification of ranges and announcements for mixed paging and
PRS blocks
Paragraph 3.6.2 Confirmation that parallel running of Personal Numbering ranges 0956 7 and
07010 7 shall be maintained until 28 April 2001
Paragraphs 4.2.1 & 4.2.2 Migration path, timescale, call trapping and announcement details for the
migration of 0321 to 08080
Paragraph 4.3.2 Terminating operator announcement arrangements for local rate ranges
Paragraph 4.4.1 Clarification that migration of 0541 refers to D-digit 5 only
Paragraph 4.4.2 Announcement arrangements for national rate
Paragraph 4.5 Reference to 01399 0 removed, status details given in para 6.1
Paragraph 5.1 Timing for PRS announcement added
Paragraph 5.2 Clarification of PRS levels in 0336 & 0930 ranges
Paragraph 6.1 Clarification of arrangements for codes without defined migration paths
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Changes made in Issue 20th March 2001 compared with Issue 14th February 2001
Paragraph 6.1 Removal of reference to code 0902. OFTEL will withdraw numbers in the 0902
range from operators on an individual basis and not according to NCNC timescales. Therefore,
operators should not discontinue service to 0902 numbers on 28th April 2001.
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Issue 20th March 2001
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