781-323 phone numbers

Numbers 781-323-0000 to 781-323-9999 are assigned to Level 3 Communications, LLC in Lexington, MA. 4 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 781-323-1xxx, 781-323-2xxx, 781-323-4xxx, 781-323-7xxx, 781-323-8xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 781-323