What is E.164?
E.164 is a standard format for international phone numbers.
The E1.64 international public telecommunications numbering plan ensures that each device on the PSTN (public switched telephone network) has a unique number globally.
With this standard E.164 number, phone calls and SMS text messages can be routed to phones all around the world.
What is the correct E.164 format?
The format of E.164 contains the following:
+ country code area code local phone number
- Plus sign country code
- International country code area code/national destination code
- Code without leading 0 phone number
- Local phone number
- Minus '-' and spaces are omitted
*There is a limit of 15 digits excluding the international call prefix
Examples of E.164 numbers
Here are some examples of how to format phone numbers from different countries.
How to format a US phone number
Formatting the US phone number 415 123 1234
US country code: +1
National destination code: 415
Subscriber number: 1231234
Your E.164 number would be: +14151231234
How to format a UK phone number
Formatting the UK phone number 07911 123456:
UK country code: +44
National destination code: 7911
Subscriber number: 123456
Your E.164 number would be: +447911123456
How to format a Japanese phone number
Formatting the Japanese phone number 070 2768 9858
Japan country code: +81
National destination code: 70
Subscriber number: 2768 9858
Your E.164 number would be: +817027689858
Tools for phone number formatting
The SMS sending service for web EZSMS, has a new tool “Phone Number Formatter” that automatically
corrects numbers to the internationally recognized E.164 format to ensure that your messages are sent without problems.
Read more about the Phone Number Formatter here.