← Area code 774
774-557 phone numbers
Numbers 774-557-0000 to 774-557-9999 are assigned to Onvoy Spectrum, LLC (rate centre BUZZARDSBY, MA, NANPA abbreviation). 4 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 774-557-3xxx, 774-557-5xxx, 774-557-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.