| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 938-30** | (301) 938-3002 - (301) 938-3099 | 32 |
| (301) 938-31** | (301) 938-3101 - (301) 938-3199 | 28 |
| (301) 938-32** | (301) 938-3200 - (301) 938-3298 | 31 |
| (301) 938-33** | (301) 938-3301 - (301) 938-3391 | 27 |
| (301) 938-34** | (301) 938-3400 - (301) 938-3496 | 35 |
| (301) 938-35** | (301) 938-3508 - (301) 938-3599 | 25 |
| (301) 938-36** | (301) 938-3608 - (301) 938-3698 | 36 |
| (301) 938-37** | (301) 938-3701 - (301) 938-3799 | 39 |
| (301) 938-38** | (301) 938-3806 - (301) 938-3896 | 40 |
| (301) 938-39** | (301) 938-3900 - (301) 938-3999 | 28 |
US Phone Directory: (301) 938-3***
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