| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 452-50** | (301) 452-5003 - (301) 452-5099 | 46 |
| (301) 452-51** | (301) 452-5101 - (301) 452-5199 | 28 |
| (301) 452-52** | (301) 452-5201 - (301) 452-5294 | 46 |
| (301) 452-53** | (301) 452-5301 - (301) 452-5395 | 39 |
| (301) 452-54** | (301) 452-5401 - (301) 452-5495 | 41 |
| (301) 452-55** | (301) 452-5502 - (301) 452-5592 | 34 |
| (301) 452-56** | (301) 452-5600 - (301) 452-5699 | 48 |
| (301) 452-57** | (301) 452-5700 - (301) 452-5797 | 41 |
| (301) 452-58** | (301) 452-5802 - (301) 452-5899 | 33 |
| (301) 452-59** | (301) 452-5900 - (301) 452-5999 | 43 |
US Phone Directory: (301) 452-5***
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