Phone Prefix | Range | Phones Recorded |
---|---|---|
(301) 421-40** | (301) 421-4000 - (301) 421-4097 | 55 |
(301) 421-41** | (301) 421-4100 - (301) 421-4198 | 57 |
(301) 421-42** | (301) 421-4200 - (301) 421-4299 | 63 |
(301) 421-43** | (301) 421-4302 - (301) 421-4399 | 59 |
(301) 421-44** | (301) 421-4400 - (301) 421-4499 | 70 |
(301) 421-45** | (301) 421-4549 - (301) 421-4593 | 2 |
(301) 421-46** | (301) 421-4623 - (301) 421-4628 | 2 |
(301) 421-47** | (301) 421-4789 - (301) 421-4789 | 1 |
(301) 421-48** | (301) 421-4829 - (301) 421-4880 | 2 |
(301) 421-49** | (301) 421-4990 - (301) 421-4993 | 2 |
US Phone Directory: (301) 421-4***
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