Phone number length about python-phonenumbers HOT 2 CLOSED

BTW, according to the international telecom pattern E.164, the total amount of numbers should be 15 at maximum.

from python-phonenumbers.

A PhoneNumber object will have a national-significant-number part that's limited to 17 chars, plus up to 3 chars of country code (but it can have a long extension attached too).

The upstream source notes for this limit of 17 that: "The ITU says the maximum length should be 15, but we have found longer numbers in Germany".

Additionally, an E164 number can get prefixed with an international dialling code (e.g 011) and suffixed with an extension, and might have all sorts of other punctuation embedded (e.g. "001-(900) 234-5678 extension 123456") -- so a user-input phone number field can potentially be a lot longer than 17+3.

As a result the internal limit is 250 characters, but I don't know of any other limits.

from python-phonenumbers.