I T U NTERNATIONAL

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I

NTERNATIONAL

T

ELECOMMUNICATION

U

NION

Telecommunication

Standardization Bureau

14 February 2006

Ref:

Contact:

Tel:

Fax:

E-Mail:

COM 2-848/HZ

Richard Hill

+41 22 730 5887

+41 22 730 5853 richard.hill@itu.int

CC1 ENUM LLC

C/o McKenna Long and Aldridge LLP

1875 Lawrence St, Suite 200

Denver CO 80202

USA

Subject:

ITU / CC1 ENUM LLC Agreement

Dear sirs,

With reference to your letter of 30 November 2005, I hereby confirm that E.164 country code

“1” will be delegated for ENUM to your organization, in accordance with the terms and conditions set forth in your letter.

You must request explicit permission from me before authorizing the delegations within the

ENUM Tier 1 Registry of any area codes (NDC as defined in E.164), since I will verify whether the Member State to whom those area codes are assigned agrees to ENUM delegations.

I will determine to which Member State the area codes are assigned by consulting the web site of the North American Numbering Plan, at: http://www.nanpa.com/reports/reports_npa.html

No area code can be delegated for ENUM until you receive an explicit approval from me.

Yours faithfully,

Houlin Zhao

Director, Telecommunication

Standardization Bureau

Cc: Karen Mulberry, Chairman, ENUM CC1 LLC

Place des Nations

CH-1211 Geneva 20

Switzerland

Telephone +41 22 730 51 11

Telefax Gr3:+41 22 733 72 56

Gr4:+41 22 730 65 00

Telex 421 000 uit ch

Telegram ITU GENEVE

E-mail: itumail@itu.int www.itu.int

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