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← Area code 650

650-231 phone numbers

Numbers 650-231-0000 to 650-231-9999 are assigned to Mcimetro Access Transmission Services LLC in Millbrae, CA. 7 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 650-231