Telcordia®
TELEPHONE AREA CODE DIRECTORY
(TACD)
File Specifications
11-15-02
This document contains data set specifications for the Telcordia™ Telephone Area Code Directory
(TACD) product as provided on diskette, email, or web download, as of the date indicated above. For
further information, call the Telcordia® Routing Administration (TRA) Customer Care Center on 866NPA-NXXS (i.e. 866-672-6997) or 732-699-6700. This document may also be downloaded at
www.trainfo.com (documents).
Copyright © 1996-2007 Telcordia® Technologies
All Rights Reserved
Issue date: 01/10/2007
TACD - Diskette / Email File Information - History
The following lists previous issues of these specifications and identifies pertinent changes per issue.
Effective
Date
Changes
07/01/95
Initial specs in this format
04/15/96
First product date to have data provided on diskette with coinciding updates to these
specifications.
02/15/99
Addition of NPA3 to file layouts
11/15/02
General restructure of files to incorporate STATUS, EFFDATE, additional NPAs, Embedded
NPAs, and other data elements into one file. This also ended the magnetic tape and microfiche
versions of the TACD.
Note: emailing of TACD began as a distribution option 6/03.
Note: web download of TACD began as a distribution option 7/04.
Telephone Area Code Directory (TACD)
File Record Layouts - (10/15/02)
Product Description:
The Telcordia® Telephone Area Code Directory (TACD) is provided by the Telcordia Routing Administration
(TRA) organization (Customer Care Center: 866-NPA-NXXS (i.e. 866-672-6997) or 732-699-6700) and
identifies the Numbering Plan Area (NPA) codes (Area Codes) that serve localities in the United States, United
States Territories, Canada, and countries in the Caribbean that participate in the North American Numbering
Plan (NANP).
TACD data is provided monthly on 3 ½” floppy diskette, via email, or via web download. It is provided in a
self-extracting compressed zipped format with the data files compressed on a file entitled TACDmmyy.exe.
(TACDmmyy.zip if emailed). Additional instructions pertaining to how to decompress the files are provided on
a STARTME.TXT file on the diskette or as emailed.
File Descriptions:
This document provides detailed record layouts of the data file(s) provided with the TACD. These
specifications are also provided monthly on a file entitled TACDSPEC.DOC. Please note that this file also
contains a glossary of the field provided in the product.
The “Last Change Date” in the file description headers in this document refers to when the file was last
structurally changed, or alternatively, first appeared.
Please note the following:

The TACD data is provided in a flat file, fixed-record length format. This format is compatible with
most database and spreadsheet applications, limited perhaps by the volume of data, software version
of user applications, user PC configurations, etc. Given that users all have unique needs and interfaces
with other databases, the interface between the provided TACD data and local user needs is the
responsibility of the user. However, the Telcordia Routing Administration (TRA) organization that is
providing you this data is available to answer questions about the data as well as assist in interface
development if so desired. Please contract TRA on 732-699-6700 if you have any questions.
 Sufficient information is provided in the TACD.DAT file to ascertain, for example, the following
typical user data needs:
o
Identification of data for a specific area (e.g. US, Canada) (see STATE, SORT CODE in the
Glossary)
o
Identification of Embedded vs. Actual (ongoing NPAs) – (see NPA details in Glossary)
o
Identification of current and future status of NPAs for a given LOCALITY (see STATUS and
EFFECTIVE DATE in the Glossary
Issue Date: 01/10/07
Telephone Area Code Directory – TACD – File Specifications
Effective Product Date: 11/15/02
Page 1
General Information:
Diskette Information DOS formatted
3 ½” floppy diskette
ASCII
Note:
Products are shipped (and should be received) approximately 2 weeks before the "product" (label) date.
File Name
Record Length
TACD.DAT
188
General
Description
All Localities-NPA data
File Layouts:
Filename:
TACD.DAT
Description:
Last Change:
FIELD DESCRIPTION
1.
2.
3.
4.
5.
6.
7
8.
9.
10.
11.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
CHANGE CODE
STATE/PROVINCE/TERRITORY/COUNTRY NAME
filler
STATE/PROVINCE/TERRITORY/COUNTRY ABBR
filler
LOCALITY NAME
filler
STATUS
filler
EFFECTIVE DATE
filler
NPA1
filler
NPA2
filler
NPA3
filler
NPA4
filler
NPA5
filler
NPA6
filler
NPA7
Issue Date: 01/10/07
LOCALITY Data
11/15/02
LENGTH
1
45
1
2
2
50
1
1
1
6
1
3
1
3
1
3
1
3
1
3
1
3
1
3
POSITION
1
2-46
47
48-49
50-51
52-101
102
103
104
105-110
111
112-114
115
116-118
119
120-122
123
124-126
127
128-130
131
132-134
135
136-138
Telephone Area Code Directory – TACD – File Specifications
Effective Product Date: 11/15/02
Page 2
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
43.
44.
45.
46.
filler
NPA8
filler
NPA9
filler
NPA0 (10)
filler
EMBEDDED NPA 1
filler
EMBEDDED NPA 2
filler
EMBEDDED NPA 3
filler
EMBEDDED NPA 4
filler
SORT CODE
filler
KEY CODE
filler
SOURCE
filler
Issue Date: 01/10/07
1
3
1
3
1
3
2
3
1
3
1
3
1
3
1
1
1
14
1
1
2
139
140-142
143
144-146
147
148-150
151-152
153-155
156
157-159
160
161-163
164
165-167
168
169
170
171-184
185
186
187-188
Telephone Area Code Directory – TACD – File Specifications
Effective Product Date: 11/15/02
Page 3
TACD - GLOSSARY OF FIELD NAMES
FIELD NAME
CHANGE CODE
DESCRIPTION
This field indicates whether a change has occurred from thee
previous month’s issuance of the file for the given record.
A - Indicates the LOCALITY has been added
C - An NPA change has occurred. This can occur when (1) a
previously reported future change in the NPAs associated
with a LOCALITY becomes “current”, or (2) when
previously reported current or future LOCALITY/NPA
relationships change from one product to the next.
D - Indicates the LOCALITY is being removed and should
not appear in the following product (unless re-added)
Blank - no change
Note that ‘D’ changes reflect the previously reported
information that was provided, thus it is possible that a ‘D’
CHANGE CODE may appear with a record that has an ‘E’
STATUS (See STATUS).
EFFECTIVE DATE
This field is used in conjunction with STATUS. It is blank if
STATUS is blank. If STATUS is non-blank, the
EFFECTIVE DATE is the date the indicated activity
(defined by STATUS) is scheduled to occur.
EMBEDDED NPAx (x=1-4)
These NPAs (Area Codes) are also associated with the given
LOCALITY, however they are generally associated with a
previously existing NPA for the LOCALITY which may no
longer exist for new NXX (prefix) assignments, but for which
pre-existing assignments (usually for wireless carriers) have
been grandfathered. Thus these NPAs may not necessarily
appear on an NPA map for the area, yet may have customers
whose (e.g. wireless) telephone numbers may properly reflect
the NPA. (Also see NPAx)
filler
‘filler’ fields should not contain any data. They are provided
for ease in reviewing the data in the flat file via an editor and
in anticipation of future growth in the data being provided.
KEY CODE
This is the STATE value followed by a ten-character
LOCALITY abbreviation (if the LOCALITY full name is
greater than 10 characters) and a two-character county code.
Note that a county code is used only in cases where a
designation has to be made between localities in the same
jurisdiction (e.g. state) but existing in multiple counties.
Issue Date: 01/10/07
Telephone Area Code Directory – TACD – File Specifications
Effective Product Date: 11/15/02
Page 4
FIELD NAME
LOCALITY
DESCRIPTION
This is the LOCALITY to which the NPA (area Code)
information applies. Please note the following:

The same LOCALITY spelling may exist in
multiple states, provinces, etc., therefore
LOCALITY should always be used in conjunction
with the “STATE” field(s).

A LOCALITY is generally a defined jurisdictional
area (town, city, etc.) but can also pertain to a
section of a city, unincorporated area, etc. In some
cases a physical location may be designated under
different LOCALITY names (e.g. Manhattan, New
York, New York City, etc.). In some cases larger
cities may be “zoned” for telphony purposes and
such zones may also appear in the TACD.

Please be aware that LOCALITY spelling may vary
(e.g. ST. LOUIS, SAINT LOUIS, ST LOUIS)
between the TACD spelling and that of any data you
may be matching against. On occasion multiple
spelling of the same LOCALITY may appear in the
TACD.

Due to the latitude given in defining a LOCALITY,
those listed in the TACD may be more or less than
may be identified in other sources for the given
state, province, etc. Should a specific location you
are looking for not be listed, please call the TRA
Customer Care Center to confirm and add it. TRA
is constantly reviewing the data being provided.
NPAx (x=1 TO 10)
NPAs (Area Codes) that are associated with the given
LOCALITY. Also see STATUS and EFFECTIVE DATE as
an NPA may be added or removed due to NPA relief
activities (e.g. Area Code splits/overlays). (Also see
EMBEDDED NPAx)
SORT CODE
This field can be used, if desired, to sort data based on the
following categories of values:
1 - United States (50 states)
2 - US Territories in the Pacific
3 - Caribbean Counties (including US Territories)
4 - Canada
SOURCE
Issue Date: 01/10/07
Indicates the ”source” of the data (from internal TRA
sources).
Telephone Area Code Directory – TACD – File Specifications
Effective Product Date: 11/15/02
Page 5
FIELD NAME
DESCRIPTION
I - NPA Change to LOCALITY due to NPA Change to
related Rate Center
L - LOCALITY record based
R - Rate Center record based
STATE/PROVINCE/TERRITORY/COUNTRY
ABBR
A two-character abbreviation of the name of the state,
province, territory, or country to which the LOCALITY is
affiliated. These may or may not correlate to defined postal
codes (especially outside the U.S.) (see State, Province,
Island Code Table at the end of this Glossary)
STATE/PROVINCE/TERRITORY/COUNTRY
NAME
The appropriate full name of the state, province, territory or
country to which the LOCALITY is affiliated
STATUS
This indicates the activity associated with the LOCALITY
that is to occur on the associated EFFECTIVE DATE
Blank - Current information as of the first day of the month
of the product date.
E - LOCALITY is scheduled to become ‘effective’ on the
effective date.
M - Information regarding the LOCALITY (essentially NPA
information) to be modified (changed, effective on the
effective date). This generally will reflect the result of an
NPA relief activity. ‘M’ lines will always be preceded by
another line for the LOCALITY that indicates the prior status
of the record relative to the effective date. Local assessment
of the fields in the prior line to those in the ‘M’ line will
identify the field(s) changing on the M effective date.
D -LOCALITY is scheduled to be ‘disconnected’ on the
effective date.
Note: An ‘E’ and/or ‘D’ (addition and/or delete) of a
LOCALITY will seldom occur. Those that do are often the
result of expanding the information in the database (E) or
data clean up (spelling variations) (D).
Issue Date: 01/10/07
Telephone Area Code Directory – TACD – File Specifications
Effective Product Date: 11/15/02
Page 6
State, Province, Island Code Table*
Canada Alberta
British Columbia
Manitoba
New Brunswick
Newfoundland**
Northwest Territory
Nova Scotia
Nunavut Territory**
Ontario
Prince Edward Island
Quebec**
Saskatchewan
Yukon Territory
AB
BC
MB
NB
NF
NT
NS
VU
ON
PE
PQ
SK
YT
Mexico -
MX
Islands American Samoa****
Anguilla
Antigua
Bahamas
Barbados
Bermuda
British Virgin Islands
Cayman Islands
CNMI (N. Marianas)***
Dominica
Dominican Republic
Grenada
Guam
Jamaica
Montserrat
Puerto Rico
St. Kitts & Nevis
St. Lucia
St. Vincent
Trinidad & Tobago
Turks & Caicos
US Virgin Islands
TPM
AS
AI
AN
BA
BD
BM
BV
CQ
NN
DM
DR
GN
GU
JM
RT
PR
KA
SA
ZF
TR
TC
VI
ISO2
AS
AI
AG
BS
BB
BM
VG
KY
MP
DM
DO
GD
GU
JM
MS
PR
KN
LC
VC
TT
TC
VI
United States Alabama
Alaska
Arizona
Arkansas
California
Colorado
Connecticut
Delaware
District of Columbia
Florida
Georgia
Hawaii
Idaho
Illinois
Indiana
Iowa
Kansas
Kentucky
Louisiana
Maine
Maryland
Massachusetts
Michigan
Minnesota
Mississippi
Missouri
AL
AK
AZ
AR
CA
CO
CT
DE
DC
FL
GA
HI
ID
IL
IN
IA
KS
KY
LA
ME
MD
MA
MI
MN
MS
MO
United States (cont'd)
Montana
Nebraska
Nevada
New Hampshire
New Jersey
New Mexico
New York
North Carolina
North Dakota
Ohio
Oklahoma
Oregon
Pennsylvania
Rhode Island
South Carolina
South Dakota
Tennessee
Texas
Utah
Vermont
Virginia
Washington
West Virginia
Wisconsin
Wyoming
MT
NE
NV
NH
NJ
NM
NY
NC
ND
OH
OK
OR
PA
RI
SC
SD
TN
TX
UT
VT
VA
WA
WV
WI
WY
*
Abbreviations are based on COMMON LANGUAGE assignments and may not correlate to other sources (e.g. postal, ISO2, etc.)
** Canada Post abbreviations are: Newfoundland/Labrador, NL; Nunavut Territory, NU; Quebec, QC
*** USPS abbreviation is MP
**** Regarding American Samoa, AS is the USPS abbreviation; AM (not used) is the COMMON LANGUAGE abbreviation
Note: for “Islands”, ISO2 value relative to TPM value is noted above for reference
Issue Date: 01/10/07
Telephone Area Code Directory – TACD – File Specifications
Effective Product Date: 11/15/02
Page 7