| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 838-20** | (301) 838-2000 - (301) 838-2099 | 23 |
| (301) 838-21** | (301) 838-2134 - (301) 838-2198 | 5 |
| (301) 838-22** | (301) 838-2201 - (301) 838-2277 | 12 |
| (301) 838-23** | (301) 838-2305 - (301) 838-2360 | 4 |
| (301) 838-24** | (301) 838-2468 - (301) 838-2468 | 1 |
| (301) 838-25** | (301) 838-2500 - (301) 838-2599 | 5 |
| (301) 838-26** | (301) 838-2695 - (301) 838-2695 | 1 |
| (301) 838-27** | (301) 838-2701 - (301) 838-2790 | 37 |
| (301) 838-28** | (301) 838-2809 - (301) 838-2899 | 70 |
| (301) 838-29** | (301) 838-2943 - (301) 838-2991 | 5 |
US Phone Directory: (301) 838-2***
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