67Leads › Free tools › Phone number formatter (E.164)

Format US phone numbers to E.164

Paste up to 500 US or Canadian numbers in any format. Get each in E.164 and national format, the reason any number cannot be dialled, and which are toll-free. Free, no account.

The rules it checks

These are the same rules 67Leads applies to every phone in its warehouse. A number that passes is well-formed, not proven to ring.

Of the 134,345 US local businesses 67Leads lists, 1,775 (1%) give a toll-free number as their main line. Toll-free lines cannot receive standard SMS from most tools and often reach a call center, so 67Leads flags them.

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Questions

What is E.164 format?

The international standard phone format: +, the country code, then the number, with no spaces or punctuation. A US number is +1 followed by its ten digits.

How do I convert US phone numbers to E.164?

Strip everything but digits, drop a leading 1 if there are 11 digits, check the remaining 10 are a valid NANP number, and prefix +1. Paste a list above to do it in bulk.

Why is a 555 number invalid?

555 exchanges are reserved; most are fictional numbers used in films and examples, so they are treated as not diallable.

What share of local businesses use a toll-free number?

Of the 134,345 US local businesses 67Leads lists, 1,775 (1%) give a toll-free number as their main line.

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