← Area code 412
412-599 phone numbers
Numbers 412-599-0000 to 412-599-9999 are assigned to Mcimetro Access Transmission Services LLC (rate centre PTGSBNZN19, PA, NANPA abbreviation). 1 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 412-599-0xxx, 412-599-2xxx, 412-599-3xxx, 412-599-4xxx, 412-599-5xxx, 412-599-6xxx, 412-599-7xxx, 412-599-8xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.