646-666 phone numbers

Numbers 646-666-0000 to 646-666-9999 are assigned to Level 3 Communications, LLC (rate centre NWYRCYZN01, NY, NANPA abbreviation). 6 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 646-666