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← Area code 508

508-377 phone numbers

Numbers 508-377-0000 to 508-377-9999 are assigned to Level 3 Communications, LLC in Milford, MA. 4 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 508-377-0xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 508-377