Table of Contents - E.164 (02/2026) - The international public telecommunication numbering plan

1	Scope
2	References
3	Definitions
	3.1	Terms defined elsewhere
	3.2	Terms defined in this Recommendation
4	Abbreviations and acronyms
5	Conventions
6	International E.164 number structure
	6.1	International E.164 number length
	6.2	Structure of the international E.164 number
	6.3	Assignment of country codes (CCs)
	6.4	Assignment of identification codes for Global Satellite Services, Networks, Group of Countries, Trials and IoT/M2M services/applications
7	International E.164 number for Geographic Areas
	7.1	Country code for Geographic Areas
	7.2	National (significant) number
	7.3	Prefixes
	7.4	National numbering plan
	7.5	Digit analysis
8	International E.164 number for Global Services
	8.1	Country code for Global Services
	8.2	Global subscriber number
	8.3	Digit analysis
	8.4	Evolution path to a Global Service international E.164 number for domestic services
9	International E.164 number for Other Global Services
	9.1	Country code for Other Global Services
	9.2	Other global subscriber number
	9.3	Digit analysis
10	International E.164 number for Global Satellite Services
	10.1	Country code for Global Satellite Services
	10.2	Identification code
	10.3	Subscriber numbers
	10.4	Digit analysis
11	International E.164 number for Networks
	11.1	Country code for Networks
	Page
	11.2	Identification code
	11.3	Subscriber numbers
	11.4	Digit analysis
12	International E.164 number for Groups of Countries
	12.1	Country code for Groups of Countries
	12.2	Group identification code
	12.3	Subscriber numbers
	12.4	Digit analysis
13	International E.164 numbering resources for trial
14	International E.164 number for IoT/M2M services/applications
	14.1	Country code for IoT/M2M
	14.2	Identification code
	14.3	Subscriber numbers
	14.4	Digit analysis
15	International prefix
16	Recommendation history
Annex A  Clarification and explanation of the structure and function of international E.164 numbers
	A.1	Scope
	A.2	Structure
	A.3	Number length
	A.4	Unique identification of international E.164 number for Geographic Areas
	A.5	Unique identification of international E.164 number for Global Services
	A.6	Unique identification of international E.164 number for Other Global Services
	A.7	Unique identification of international E.164 number for Global Satellite Service
	A.8	Unique identification of international E.164 number for Networks
	A.9	Unique identification of international E.164 number for Groups of Countries
	A.10	International E.164 number for Trial
	A.11	International E.164 number for IoT/M2M services/applications
	A.12	National-only numbers
	A.13	Calling line identification
Bibliography