| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 248-60** | (301) 248-6000 - (301) 248-6099 | 71 |
| (301) 248-61** | (301) 248-6100 - (301) 248-6198 | 75 |
| (301) 248-62** | (301) 248-6200 - (301) 248-6299 | 61 |
| (301) 248-63** | (301) 248-6301 - (301) 248-6399 | 68 |
| (301) 248-64** | (301) 248-6401 - (301) 248-6499 | 61 |
| (301) 248-65** | (301) 248-6500 - (301) 248-6599 | 70 |
| (301) 248-66** | (301) 248-6601 - (301) 248-6699 | 66 |
| (301) 248-67** | (301) 248-6700 - (301) 248-6799 | 64 |
| (301) 248-68** | (301) 248-6800 - (301) 248-6899 | 63 |
| (301) 248-69** | (301) 248-6900 - (301) 248-6999 | 70 |
US Phone Directory: (301) 248-6***
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