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ITU-T E.164

The international public telecommunication numbering plan

active, Most Current
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Organization: ITU-T
Publication Date: 1 November 2010
Status: active
Page Count: 32
scope:

This Recommendation provides the number structure and functionality for the five categories of numbers used for international public telecommunication: geographic areas, global services, networks, groups of countries (GoC) and resources for trials. For each of the categories, it details the components of the numbering structure and the digit analysis required to successfully route the calls. Annex A provides additional information on the structure and function of international public telecommunication numbers (hereafter referred to as "international ITU-T E.164-numbers"). Annex B provides information on network identification, service parameters, calling/connected line identity, dialling procedures and addressing for geographic-based ISDN calls. Specific ITU-T E.164-based applications, which differ in usage, are defined in separate ITU-T Recommendations, e.g., [ITU-T E.168], Application of E.164 numbering plan for UPT.

Document History

ITU-T E.164
June 1, 2020
The international Public Telecommunication numbering plan Supplement 2: Number portability
A description is not available for this item.
ITU-T E.164
June 1, 2014
The international public telecommunication numbering plan Supplement 2: Number portability
A description is not available for this item.
ITU-T E.164
March 1, 2012
The international public telecommunication numbering plan Supplement 2: Number portability
A description is not available for this item.
ITU-T E.164
March 1, 2012
The international public telecommunication numbering plan Supplement 6: Guidelines for identifying and selecting globally harmonized numbers
A description is not available for this item.
ITU-T E.164
June 1, 2011
The international public telecommunication numbering plan Amendment 1: Revised Annex A – Clarification and explanation of the structure and function of international ITU-T E.164-numbers
This Recommendation provides the number structure and functionality for the five categories of numbers used for international public telecommunication: geographic areas, global services, networks,...
ITU-T E.164
November 1, 2010
The international public telecommunication numbering plan
This Recommendation provides the number structure and functionality for the five categories of numbers used for international public telecommunication: geographic areas, global services, networks,...
ITU-T E.164
November 1, 2009
The international public telecommunication numbering plan Supplement 5: Guidance with regard to the selection of numbers for helplines for children
A description is not available for this item.
ITU-T E.164
November 1, 2009
The international public telecommunication numbering plan Supplement 3 – Operational and administrative issues associated with national implementations of the ENUM functions Amendment 1
A description is not available for this item.
ITU-T E.164
November 1, 2009
The international public telecommunication numbering plan Supplement 2: Number portability
A description is not available for this item.
ITU-T E.164
November 1, 2009
The international public telecommunication numbering plan Supplement 4 – Operational and administrative issues associated with the implementation of ENUM for non-geographic country codes Amendment 1
A description is not available for this item.
E.164 SUPP 5
May 1, 2008
The international public telecommunication numbering plan Supplement 5 – Guidance with regard to the selection of numbers for helplines for children
A description is not available for this item.
ITU-T E.164
February 1, 2005
The international public telecommunication numbering plan
A description is not available for this item.
ITU-T E.164
May 1, 2004
The international public telecommunication numbering plan Supplement 3: Operational and administrative issues associated with national implementations of the ENUM functions SERIES E: OVERALL NETWORK OPERATION, TELEPHONE SERVICE, SERVICE OPERATION AND HUMAN FACTORS International operation – Numbering plan of the international telephone service
A description is not available for this item.
ITU-T E.164
May 1, 2004
The international public telecommunication numbering plan Supplement 4: Operational and administrative issues associated with the implementation of ENUM for Non-geographic country codes SERIES E: OVERALL NETWORK OPERATION, TELEPHONE SERVICE, SERVICE OPERATION AND HUMAN FACTORS International operation – Numbering plan of the international telephone service
A description is not available for this item.
ITU-T E.164
May 1, 2003
The international public telecommunication numbering plan Supplement 4: Operational and administrative issues associated with the implementation of ENUM for Non-geographic country codes SERIES E: OVERALL NETWORK OPERATION, TELEPHONE SERVICE, SERVICE OPERATION AND HUMAN FACTORS International operation – Numbering plan of the international telephone service
A description is not available for this item.
ITU-T E.164
May 1, 2002
International Public Telecommunication Numbering Plan Supplement 3: Opertional and Administrative Issues Associated with National Implementations of the ENUM Funtions Series E: Overall Network Operation, Telephone Service, Service Operation and Human Factors International Operation - Numbering Plan of the International Telephone Service
A description is not available for this item.
ITU-T E.164
November 1, 1998
The International Public Telecommunication Numbering Plan Supplement 2: Numbering Portability - Series E: Overall Network Operation, Telephone Service, Service Operation and Human Factors Operation, Numbering, Routing and Mobile Services - International Operation - Numbering Plan of the International Telephone Service
A description is not available for this item.
ITU-T E.164
March 1, 1998
Alternatives for Carrier Selection and Network Identification - Series E: Overall Network Operation, Telephone Service, Service Operation and Human Factors - Operation, Numbering, Routing and Mobile Services - International Operation - Numbering Plan of the International Telephone Service
A description is not available for this item.
ITU-T E.164
May 1, 1997
Designations for International Networks - Series M: TMN and International Public Telecommunication Numbering Plan - Series E: Overall Network Operation, Telephone Service, Service Operation and Human Factors Operation, Numbering, Routing and Mobile Services - International Operation - Numbering Plan of the International Telephone Service
A description is not available for this item.
E.164
January 1, 1991
Numbering Plan for the ISDN Era
A description is not available for this item.
E.164
January 1, 1989
Numbering Plan for the ISDN Era - Telephone Network and ISDN - Operation, Numbering, Routing and Mobile Service
A description is not available for this item.
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References

This document references:
ITU-T E.164.1 - Criteria and procedures for the reservation, assignment and reclamation of E.164 country codes and associated identification codes (ICs)
Published by ITU-T on May 1, 2006
A description is not available for this item.
This document references:
ITU-T E.166 - Numbering Plan Interworking for the E.164 and X.121 Numbering Plans - Series E: Telephone Network and ISDN Operation, Numbering, Routing and Mobile Services - International Operation - Numbering Plan of the International Telephone Service
Published by ITU-T on March 1, 1998
A description is not available for this item.
This document references:
TS 100 907 - Digital Cellular Telecommunications System (Phase 2+); Man-Machine Interface (MMI) of the Mobile Station (MS)
Published by ETSI on June 1, 2002
A description is not available for this item.
This document references:
ITU-T E.129 - Presentation of national numbering plans
Published by ITU-T on January 1, 2013
This Recommendation assists numbering plan administrators by describing a methodology to access and provide ITU-T E.164 numbering information on their country's national numbering plan (NNP) in a...
This document is referenced by:
ISO/IEC 9594-5 - Information technology — Open systems interconnection — Part 5: The Directory: Protocol specifications
Published by ISO on November 1, 2020
This Recommendation | International Standard specifies the Directory Access Protocol, the Directory System Protocol, the Directory Information Shadowing Protocol, and the Directory Operational...
This document is referenced by:
ISO/IEC 9594-6 - Information technology — Open systems interconnection — Part 6: The Directory: Selected attribute types
Published by ISO on November 1, 2020
This Recommendation | International Standard defines a number of attribute types and matching rules which may be found useful across a range of applications of the Directory. Attribute types and...
This document is referenced by:
TS 129 002 - Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; 5G; Mobile Application Part (MAP) specification
Published by ETSI on July 1, 2022
It is necessary to transfer between entities of a Public Land Mobile Network (PLMN) information specific to the PLMN in order to deal with the specific behaviour of roaming Mobile Stations (MS)s. The...
This document is referenced by:
TS 129 274 - Universal Mobile Telecommunications System (UMTS); LTE; 5G; 3GPP Evolved Packet System (EPS); Evolved General Packet Radio Service (GPRS) Tunnelling Protocol for Control plane (GTPv2-C); Stage 3
Published by ETSI on October 1, 2022
The present document specifies the stage 3 of the control plane of the GPRS Tunnelling Protocol, Version 2 (GTPv2-C). GTPv2-C shall be used over: - the S2a, S2b, S3, S4, S5, S8, S10, S11, S16, Sm and...
This document is referenced by:
TS 132 273 - Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Telecommunication management; Charging management; Multimedia Broadcast and Multicast Service (MBMS) charging
Published by ETSI on April 1, 2022
The present document is part of a series of Technical Specifications (TSs) that specify charging functionality and charging management in GSM/UMTS networks. The GSM/UMTS core network charging...
This document is referenced by:
ITU-T E.164.2 - ITU-T E.164 numbering resources for trials
Published by ITU-T on June 1, 2020
This Recommendation contains the criteria and procedures for an applicant to be temporarily assigned a three-digit identification code within the shared ITU-T E.164 country code 991 for the purpose...
This document is referenced by:
ITU-T E.164.2 - ITU-T E.164 numbering resources for trials
Published by ITU-T on June 1, 2020
This Recommendation contains the criteria and procedures for an applicant to be temporarily assigned a three-digit identification code within the shared ITU-T E.164 country code 991 for the purpose...
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