← Area code 508
508-346 phone numbers
Numbers 508-346-0000 to 508-346-9999 are assigned to Tc Systems, Inc. (rate centre FRANKLIN, MA, NANPA abbreviation). 4 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 508-346-0xxx, 508-346-1xxx, 508-346-4xxx, 508-346-5xxx, 508-346-7xxx, 508-346-8xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.