View source for E.164

==External links==
* [https://www.itu.int/rec/T-REC-E.164 Text of the Recommendation, Amd. 1 and supplement 6 (E.164)]
* [https://www.itu.int/dms_pub/itu-t/opb/sp/T-SP-E.164D-2016-PDF-E.pdf List of ITU-T Recommendation E.164 assigned country codes as of 15 December 2016]
* [http://www.itu.int/dms_pub/itu-t/opb/sp/T-SP-E.164C-2011-PDF-E.pdf List of ITU-T Recommendation E.164 Dialling Procedures as of 15 December 2011]
* [https://www.itu.int/rec/T-REC-E.163 Numbering plan for the international telephone service (E.163) (incorporated in E.164)]
* {{usurped|1=[https://web.archive.org/web/20190626203635/http://www.wtng.info/ World Telephone Numbering Guide]}}


[[Category:Telephone numbers]]
[[Category:Identifiers]]
[[Category:ITU-T E Series Recommendations]]