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Elena Tkachenko
Elena Tkachenko

What is E.164?

E.164 is the global standard for telephone numbering, ensuring every device within the PSTN possesses a globally unique number. This numbering plan facilitates the correct routing of phone calls and text messages to specific phones across the entire world.

E.164 numbers follow the format [+][country code][subscriber number, including area code], with a maximum length of fifteen digits.

Here are some examples of E.164 numbers:

E.164 Format

Country Code Country

Subscriber Number

+12025550164 1 US 2025550164
+441632960633 44 UK 01632960633
+865911653746 86 CN 5911653746

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