/plushcap/analysis/vonage/vonage-what-is-e-164-format

What Is E.164 Format?

What's this blog post about?

The E.164 international standard defines a phone number scheme that ensures each user worldwide has a unique phone number, simplifying international calls and reducing the risk of dialing the wrong number. The standard format is [country code] [national destination code] [subscriber number], with a maximum of 15 digits, where country codes are represented by prefixing them with a plus sign (+), national destination codes identify specific areas or networks within countries, and subscriber numbers are individual phone numbers assigned to users. Various examples illustrate how different countries' phone numbers can be represented in the E.164 format, including those for the US, UK, Spain, and Germany. The standard is used by many APIs, such as Vonage Network APIs, which require API consumers to follow this format when calling certain endpoints. To validate an E.164 phone number, developers can use existing libraries like phone or phonenumbers, or build their own validator using regular expressions.

Company
Vonage

Date published
Oct. 23, 2024

Author(s)
Alvaro Navarro

Word count
701

Language
English

Hacker News points
None found.


By Matt Makai. 2021-2024.