650-391 phone numbers

Numbers 650-391-0000 to 650-391-9999 are assigned to Level 3 Telecom of California, LP in Palo Alto, CA. 9 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 650-391