| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (240) 274-60** | (240) 274-6005 - (240) 274-6056 | 2 |
| (240) 274-61** | (240) 274-6136 - (240) 274-6137 | 2 |
| (240) 274-62** | (240) 274-6225 - (240) 274-6238 | 2 |
| (240) 274-63** | (240) 274-6307 - (240) 274-6378 | 5 |
| (240) 274-64** | (240) 274-6408 - (240) 274-6483 | 4 |
| (240) 274-65** | (240) 274-6522 - (240) 274-6596 | 4 |
| (240) 274-66** | (240) 274-6601 - (240) 274-6680 | 6 |
| (240) 274-67** | (240) 274-6717 - (240) 274-6790 | 3 |
| (240) 274-68** | (240) 274-6801 - (240) 274-6844 | 4 |
| (240) 274-69** | (240) 274-6929 - (240) 274-6972 | 2 |
US Phone Directory: (240) 274-6***
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