Canadial Know Who Called
← Area code 925

925-231 phone numbers

Numbers 925-231-0000 to 925-231-9999 are assigned to Level 3 Communications, LLC in Martinez, CA. 4 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 925-231