| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 505-20** | (301) 505-2000 - (301) 505-2099 | 80 |
| (301) 505-21** | (301) 505-2102 - (301) 505-2199 | 77 |
| (301) 505-22** | (301) 505-2200 - (301) 505-2299 | 69 |
| (301) 505-23** | (301) 505-2301 - (301) 505-2393 | 68 |
| (301) 505-24** | (301) 505-2401 - (301) 505-2496 | 71 |
| (301) 505-25** | (301) 505-2500 - (301) 505-2598 | 74 |
| (301) 505-26** | (301) 505-2602 - (301) 505-2699 | 73 |
| (301) 505-27** | (301) 505-2701 - (301) 505-2798 | 74 |
| (301) 505-28** | (301) 505-2804 - (301) 505-2899 | 74 |
| (301) 505-29** | (301) 505-2901 - (301) 505-2999 | 71 |
US Phone Directory: (301) 505-2***
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