978-277 phone numbers

Numbers 978-277-0000 to 978-277-9999 are assigned to Level 3 Communications, LLC (rate centre TEMPLETON, MA, NANPA abbreviation). 9 of its ten thousand-number blocks are assigned to other carriers (number pooling).

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

Reported numbers in 978-277