707-780 phone numbers

Numbers 707-780-0000 to 707-780-9999 are assigned to Level 3 Communications, LLC (rate centre PTLM MAIN, CA, NANPA abbreviation). 5 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 707-780-4xxx — calls from these use spoofed caller IDs.

Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.

Reported numbers in 707-780