| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (240) 244-50** | (240) 244-5000 - (240) 244-5099 | 84 |
| (240) 244-51** | (240) 244-5100 - (240) 244-5198 | 88 |
| (240) 244-52** | (240) 244-5200 - (240) 244-5298 | 95 |
| (240) 244-53** | (240) 244-5300 - (240) 244-5399 | 85 |
| (240) 244-54** | (240) 244-5400 - (240) 244-5499 | 91 |
| (240) 244-55** | (240) 244-5500 - (240) 244-5598 | 91 |
| (240) 244-56** | (240) 244-5601 - (240) 244-5698 | 84 |
| (240) 244-57** | (240) 244-5700 - (240) 244-5799 | 93 |
| (240) 244-58** | (240) 244-5800 - (240) 244-5899 | 88 |
| (240) 244-59** | (240) 244-5900 - (240) 244-5999 | 87 |
US Phone Directory: (240) 244-5***
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