| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (240) 683-43** | (240) 683-4300 - (240) 683-4300 | 1 |
| (240) 683-45** | (240) 683-4501 - (240) 683-4599 | 59 |
| (240) 683-46** | (240) 683-4600 - (240) 683-4699 | 74 |
| (240) 683-47** | (240) 683-4720 - (240) 683-4799 | 37 |
| (240) 683-48** | (240) 683-4801 - (240) 683-4898 | 57 |
| (240) 683-49** | (240) 683-4901 - (240) 683-4999 | 52 |
US Phone Directory: (240) 683-4***
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