| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 454-81** | (301) 454-8100 - (301) 454-8198 | 62 |
| (301) 454-82** | (301) 454-8200 - (301) 454-8284 | 3 |
| (301) 454-83** | (301) 454-8311 - (301) 454-8383 | 3 |
| (301) 454-84** | (301) 454-8405 - (301) 454-8495 | 13 |
| (301) 454-87** | (301) 454-8723 - (301) 454-8723 | 1 |
| (301) 454-88** | (301) 454-8804 - (301) 454-8804 | 1 |
| (301) 454-89** | (301) 454-8976 - (301) 454-8976 | 1 |
US Phone Directory: (301) 454-8***
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