| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 862-40** | (301) 862-4000 - (301) 862-4099 | 76 |
| (301) 862-41** | (301) 862-4100 - (301) 862-4199 | 82 |
| (301) 862-42** | (301) 862-4200 - (301) 862-4298 | 77 |
| (301) 862-43** | (301) 862-4300 - (301) 862-4398 | 72 |
| (301) 862-44** | (301) 862-4400 - (301) 862-4499 | 82 |
| (301) 862-45** | (301) 862-4500 - (301) 862-4599 | 82 |
| (301) 862-46** | (301) 862-4600 - (301) 862-4699 | 65 |
| (301) 862-47** | (301) 862-4700 - (301) 862-4799 | 72 |
| (301) 862-48** | (301) 862-4800 - (301) 862-4899 | 75 |
| (301) 862-49** | (301) 862-4900 - (301) 862-4999 | 73 |
US Phone Directory: (301) 862-4***
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