240-804 phone numbers

Numbers 240-804-0000 to 240-804-9999 are assigned to Onvoy, LLC (rate centre TOMPKINSVL, MD, NANPA abbreviation). 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 240-804-0xxx, 240-804-1xxx, 240-804-4xxx, 240-804-6xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 240-804