| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (240) 381-50** | (240) 381-5001 - (240) 381-5098 | 26 |
| (240) 381-51** | (240) 381-5103 - (240) 381-5189 | 18 |
| (240) 381-52** | (240) 381-5205 - (240) 381-5292 | 10 |
| (240) 381-53** | (240) 381-5310 - (240) 381-5399 | 12 |
| (240) 381-54** | (240) 381-5412 - (240) 381-5499 | 15 |
| (240) 381-55** | (240) 381-5500 - (240) 381-5596 | 16 |
| (240) 381-56** | (240) 381-5606 - (240) 381-5677 | 16 |
| (240) 381-57** | (240) 381-5703 - (240) 381-5796 | 24 |
| (240) 381-58** | (240) 381-5801 - (240) 381-5897 | 22 |
| (240) 381-59** | (240) 381-5905 - (240) 381-5996 | 18 |
US Phone Directory: (240) 381-5***
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