| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 565-60** | (301) 565-6008 - (301) 565-6091 | 11 |
| (301) 565-61** | (301) 565-6118 - (301) 565-6190 | 11 |
| (301) 565-62** | (301) 565-6200 - (301) 565-6291 | 10 |
| (301) 565-63** | (301) 565-6306 - (301) 565-6310 | 2 |
| (301) 565-64** | (301) 565-6400 - (301) 565-6431 | 4 |
| (301) 565-65** | (301) 565-6508 - (301) 565-6530 | 3 |
| (301) 565-66** | (301) 565-6660 - (301) 565-6685 | 3 |
| (301) 565-67** | (301) 565-6700 - (301) 565-6798 | 38 |
| (301) 565-68** | (301) 565-6892 - (301) 565-6892 | 1 |
US Phone Directory: (301) 565-6***
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