← Area code 412
412-836 phone numbers
Numbers 412-836-0000 to 412-836-9999 are assigned to Onvoy, LLC (rate centre PTGSBNZN14, PA, NANPA abbreviation). 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 412-836-2xxx, 412-836-3xxx, 412-836-4xxx, 412-836-5xxx, 412-836-6xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.