Question 1

What is the E.164 format?

Accepted Answer

E.164 is an international standard for phone numbers that defines a unified format. Numbers start with the + sign followed by the country code and local number, with a maximum of 15 digits total, without spaces or dashes.

Question 2

How do I validate a phone number?

Accepted Answer

Enter the phone number in E.164 format (e.g., +5511999999999) and click Validate. The tool verifies whether the number strictly follows the E.164 standard, including length and allowed characters.

Question 3

What is an example of an E.164 number?

Accepted Answer

An example is +5511999999999 for a Brazilian number, or +14155552671 for a US number. The format starts with the + sign, followed by the country code (2 digits for Brazil) and the local number, without spaces or formatting.

Question 4

Does validation check the phone carrier?

Accepted Answer

No. This tool only validates whether the number follows the correct E.164 format. It does not query telephone carriers to verify if the number exists or which network it belongs to.

E.164 Phone Number Validator

How E.164 Validation Works

Frequently Asked Questions

Key Facts about E.164