| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 248-40** | (301) 248-4001 - (301) 248-4098 | 73 |
| (301) 248-41** | (301) 248-4100 - (301) 248-4198 | 76 |
| (301) 248-42** | (301) 248-4200 - (301) 248-4299 | 79 |
| (301) 248-43** | (301) 248-4300 - (301) 248-4399 | 73 |
| (301) 248-44** | (301) 248-4400 - (301) 248-4499 | 71 |
| (301) 248-45** | (301) 248-4500 - (301) 248-4599 | 75 |
| (301) 248-46** | (301) 248-4600 - (301) 248-4699 | 72 |
| (301) 248-47** | (301) 248-4701 - (301) 248-4799 | 72 |
| (301) 248-48** | (301) 248-4800 - (301) 248-4898 | 74 |
| (301) 248-49** | (301) 248-4901 - (301) 248-4999 | 73 |
US Phone Directory: (301) 248-4***
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