978-403 phone numbers

Numbers 978-403-0000 to 978-403-9999 are assigned to Bandwidth.com CLEC, LLC in Lunenburg, MA. 8 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 978-403-7xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 978-403