I.331 : The international public telecommunication numbering plan

I.331 : The international public telecommunication numbering plan

Recommendation I.331

This Recommendation is published under alias number E.164

In force components
Number	Title	Status
E.164 (11/10)	The international public telecommunication numbering plan	In force
E.164 (2010) Amd. 1 (06/11)	Revised Annex A: Clarification and explanation of the structure and function of international ITU-T E.164-numbers	In force (prepublished)
E.164 Supplement 2 (11/09)	Number portability	In force
E.164 Supplement 3 Amendment 1 (11/09)		In force
E.164 Supplement 4 Amendment 1 (11/09)		In force
E.164 Supplement 5 (11/09)	Guidance with regard to the selection of numbers for helplines for children	In force

Superseded and Withdrawn components
Number	Title	Status
E.164/I.331/Q.11bis (11/88)	Numbering plan for the ISDN era This Recommendation is also included but not published in I series under alias number I.331	Superseded
E.164/I.331/Q.11bis (08/91)	Numbering plan for the ISDN era This Recommendation is also included but not published in I series under alias number I.331. It replaces former E.163 numbering plan	Superseded
E.164 Supplement 5 (05/08)	Guidance with regard to the selection of numbers for helplines for children	Superseded
I.331 (05/97)	The international public telecommunication numbering plan This Recommendation is published under alias number E.164	Superseded