| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 937-20** | (301) 937-2000 - (301) 937-2098 | 73 |
| (301) 937-21** | (301) 937-2100 - (301) 937-2199 | 77 |
| (301) 937-22** | (301) 937-2200 - (301) 937-2299 | 66 |
| (301) 937-23** | (301) 937-2300 - (301) 937-2398 | 67 |
| (301) 937-24** | (301) 937-2400 - (301) 937-2496 | 65 |
| (301) 937-25** | (301) 937-2501 - (301) 937-2599 | 68 |
| (301) 937-26** | (301) 937-2600 - (301) 937-2699 | 65 |
| (301) 937-27** | (301) 937-2701 - (301) 937-2799 | 68 |
| (301) 937-28** | (301) 937-2800 - (301) 937-2899 | 79 |
| (301) 937-29** | (301) 937-2900 - (301) 937-2997 | 75 |
US Phone Directory: (301) 937-2***
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