Validators · 100% free
Phone Number E.164 Validator
Validate phone numbers in E.164 international format (+1234567890), for SMS marketing compliance.
SMS
Total numbers
5
Valid E.164
4
Invalid (need reformat)
1
✓ +15551234567
✓ +447911123456
✗ 555-1234
✓ +44 7911 123456
✓ +819012345678
About this tool
E.164 is required by Twilio, Attentive, and most SMS providers. Validator checks format and country code.
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