408-577 phone numbers

Numbers 408-577-0000 to 408-577-9999 are assigned to Pacific Bell (rate centre SNJS NORTH, CA, NANPA abbreviation). 1 of its ten thousand-number blocks are assigned to other carriers (number pooling).

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

Reported numbers in 408-577