| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (240) 838-50** | (240) 838-5001 - (240) 838-5099 | 86 |
| (240) 838-51** | (240) 838-5102 - (240) 838-5199 | 76 |
| (240) 838-52** | (240) 838-5200 - (240) 838-5299 | 84 |
| (240) 838-53** | (240) 838-5300 - (240) 838-5399 | 83 |
| (240) 838-54** | (240) 838-5400 - (240) 838-5499 | 88 |
| (240) 838-55** | (240) 838-5500 - (240) 838-5599 | 78 |
| (240) 838-56** | (240) 838-5601 - (240) 838-5699 | 77 |
| (240) 838-57** | (240) 838-5701 - (240) 838-5799 | 86 |
| (240) 838-58** | (240) 838-5801 - (240) 838-5899 | 83 |
| (240) 838-59** | (240) 838-5900 - (240) 838-5998 | 82 |
US Phone Directory: (240) 838-5***
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