415-723 phone numbers

Numbers 415-723-0000 to 415-723-9999 are assigned to Level 3 Communications, LLC (rate centre POINTREYES, CA, NANPA abbreviation). 6 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 415-723-3xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 415-723