240-407 phone numbers

Numbers 240-407-0000 to 240-407-9999 are assigned to Level 3 Communications, LLC (rate centre WSNGTNZN16, MD, NANPA abbreviation). 8 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 240-407-9xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 240-407