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You are hereITU > Homepage > ITU-T > International Numbering Resources




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​​​​​​​​​​​​International Numbering Resources​​​​



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INR Database

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​​INR Database (Restricted Access)
ITU-T E.164 Country Codes &
     International Shared Country Codes
ITU-T E.118 Issuer Identifier Number (IIN)


ITU-T E.212 (MCC & MNC)

ITU-T E.218 (TMCC)


ITU-T Q.708 (ISPC & SANC)
(Access to this database is restricted to ITU Member States and ITU-T Sector Members only.​
To log in, enter the email address associated with your ITU user account, and your TIES password. ) ​










OPERATIONAL BULLETIN

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The ITU Operational Bulletin is a fortnightly publication containing administrative and operational information exchanged between administrations and recognized operating agencies (ROAs) and other service providers,​ entities and organizations, in respect to international telecommunication services.














ENUM Delegations

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ENUM defines a method for entering Recommendation E.164 country codes into the Internet Domain Name System.
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Misuse OF E.164 Numbering Resources


​​​Member States and Sector Members are kindly asked to notify the TSB of situations that they are aware of that indicate potential misuse of numbering resources.
The reports and replies available on this website may be accessed by ITU TIES users only.​​
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The Object Identifier (OID)

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An object identifier (OID) is an identification mechanism defined in the Recommendations ITU-T X.660 | ISO/IEC 9834 series for naming any type of object, concept or "thing" with a globally unambiguous name which requires a persistent name (long life-time). The ITU-T Study Group 17 OID Project assists users of OIDs within and outside of ITU-T. ​
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Bureaufax Table


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The ​Bureaufax Table, published in collaboration with the Universal Postal Union (UPU) in pursuance of the provisions of ITU-T Recommendation F.170 (03/98), is now published in electronic version only.​











Recognized Operating Agencies (ROA)


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The status of Recognized Operating Agency (ROA) is used within certain ITU-T Recommendations, e.g. E.118, E.164.1, E.169.1, E.169.2, E.212, Q.708, X.121 as a criterion regarding assignment of international numbering resources. ​​Such a list would assist in the administration of international numbering resources and would facilitate the exchange of information between ROAs, for example, on numbering changes.​ ​​​ ​




















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Lists of Codes and Numbers


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​​​ ​​Notification Forms to be sent by national Administrations to ITU​


National Numbering Plans
​​Administrations are requested to notify ITU about their national numbering plan​ changes, or to give an explanation of their web page on national numbering plan as well as their contact points, so that the information, which will be available freely to all Administrations/ROAs and service providers, can be posted on ITU-T website.

National-only numbers linked with emergency services and other services of social value

​​​ITU-T M.1400 ITU Carrier Code​ (ICC)


​ ITU-T X.121​ (DNIC)


ITU-T F.400/X.400 (ADMD)

ITU-T F.32​ Telegram Destination Indicators


ITU-T F.68/F.69​ (TDC & TNIC)

International Country Codes
International country codes lists published as Annexes to the ITU Operational Bulletin (OB).

List of Codes and Numbers
Lists of Codes and Numbers published by TSB or BR as Annexes to the ITU Operational Bulletin (OB).

Universal Numbers
UIFN, UIPRN, UISCN, ITU IND AESA​
















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Misc. Numbering Topics


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​​​​​​ITU-D Documents and Reports on Numbering
Information maintained by ITU-D on the topic of numbering.

Numbering Survey

Reserved and assigned E.164 Network Codes
List of global services and network codes assigned under E.164 codes 881 and 882, in accordance with ITU-T Recommendation E.164.1.

Reserved and assigned E.212 shared MCC and associated MNC

Guidance for E.164 and E212 applicants​


Templates for applications for shared network codes
Model for applications for shared network codes in accordance with Section 8 of ITU-T Recommendation E.164.1.​













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