| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 334-20** | (301) 334-2000 - (301) 334-2098 | 78 |
| (301) 334-21** | (301) 334-2100 - (301) 334-2199 | 63 |
| (301) 334-22** | (301) 334-2201 - (301) 334-2299 | 85 |
| (301) 334-23** | (301) 334-2300 - (301) 334-2399 | 83 |
| (301) 334-24** | (301) 334-2400 - (301) 334-2499 | 89 |
| (301) 334-25** | (301) 334-2500 - (301) 334-2599 | 81 |
| (301) 334-26** | (301) 334-2601 - (301) 334-2699 | 89 |
| (301) 334-27** | (301) 334-2700 - (301) 334-2798 | 84 |
| (301) 334-28** | (301) 334-2800 - (301) 334-2897 | 84 |
| (301) 334-29** | (301) 334-2900 - (301) 334-2999 | 84 |
US Phone Directory: (301) 334-2***
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