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← Area code 617

617-398 phone numbers

Numbers 617-398-0000 to 617-398-9999 are assigned to Bandwidth.com CLEC, LLC (rate centre CHARLESTN, MA, NANPA abbreviation). 7 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 617-398-9xxx — calls from these use spoofed caller IDs.

Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.

Reported numbers in 617-398