← Area code 301
301-623 phone numbers
Numbers 301-623-0000 to 301-623-9999 are assigned to Teleport Communications America, LLC (rate centre WSNG236Z13, MD, NANPA abbreviation). 5 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 301-623
- 1 (301) 623-1285 2complaints
- 2 (301) 623-1427 2complaints
- 3 (301) 623-3356 2complaints
- 4 (301) 623-0082 1complaints
- 5 (301) 623-0500 1complaints
- 6 (301) 623-1211 1complaints
- 7 (301) 623-1408 1complaints
- 8 (301) 623-1573 1complaints
- 9 (301) 623-1849 1complaints
- 10 (301) 623-1855 1complaints
- 11 (301) 623-2173 1complaints
- 12 (301) 623-2202 1complaints
- 13 (301) 623-2709 1complaints
- 14 (301) 623-4914 1complaints
- 15 (301) 623-6221 1complaints
- 16 (301) 623-6618 1complaints
- 17 (301) 623-6625 1complaints
- 18 (301) 623-6926 1complaints
- 19 (301) 623-7574 1complaints
- 20 (301) 623-9673 1complaints
- 21 (301) 623-9718 1complaints