681-337 phone numbers

Numbers 681-337-0000 to 681-337-9999 are assigned to Level 3 Communications, LLC (rate centre WIDEN, WV, NANPA abbreviation). 5 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 681-337-2xxx, 681-337-4xxx, 681-337-5xxx, 681-337-9xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 681-337