← Area code 240
240-352 phone numbers
Numbers 240-352-0000 to 240-352-9999 are assigned to Peerless Network of Maryland, LLC in La Plata, MD. 1 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 240-352-1xxx, 240-352-2xxx, 240-352-3xxx, 240-352-4xxx, 240-352-5xxx, 240-352-6xxx, 240-352-7xxx, 240-352-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.