| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (240) 442-50** | (240) 442-5003 - (240) 442-5099 | 87 |
| (240) 442-51** | (240) 442-5100 - (240) 442-5199 | 82 |
| (240) 442-52** | (240) 442-5217 - (240) 442-5294 | 38 |
| (240) 442-53** | (240) 442-5310 - (240) 442-5391 | 10 |
| (240) 442-54** | (240) 442-5427 - (240) 442-5499 | 4 |
US Phone Directory: (240) 442-5***
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