E.164 Numbers

An E.164 number is the standard recommendation titled The international public telecommunication numbering plan. It is a general format for all international numbers that ensures each number is globally unique.

An E.164 number is formatted with a plus, followed by the country code, followed by the subscriber number including the area code. It may have a maximum of 15 digits.

E.164 Number Country Code Subscriber Number
+441514960453 44 (United Kingdom) 1514960453
+447700900859 44 (United Kingdom) 7700900859
+14155550169 1 (United States) 4155550169