| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 341-40** | (301) 341-4000 - (301) 341-4099 | 69 |
| (301) 341-41** | (301) 341-4100 - (301) 341-4117 | 4 |
| (301) 341-42** | (301) 341-4241 - (301) 341-4257 | 2 |
| (301) 341-43** | (301) 341-4322 - (301) 341-4388 | 4 |
| (301) 341-45** | (301) 341-4557 - (301) 341-4557 | 1 |
| (301) 341-46** | (301) 341-4600 - (301) 341-4696 | 64 |
| (301) 341-47** | (301) 341-4710 - (301) 341-4710 | 1 |
| (301) 341-48** | (301) 341-4887 - (301) 341-4890 | 2 |
| (301) 341-49** | (301) 341-4900 - (301) 341-4999 | 79 |
US Phone Directory: (301) 341-4***
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