| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 874-30** | (301) 874-3002 - (301) 874-3099 | 76 |
| (301) 874-31** | (301) 874-3100 - (301) 874-3199 | 72 |
| (301) 874-32** | (301) 874-3200 - (301) 874-3298 | 63 |
| (301) 874-33** | (301) 874-3300 - (301) 874-3399 | 68 |
| (301) 874-34** | (301) 874-3400 - (301) 874-3499 | 71 |
| (301) 874-35** | (301) 874-3500 - (301) 874-3595 | 56 |
| (301) 874-36** | (301) 874-3600 - (301) 874-3699 | 74 |
| (301) 874-37** | (301) 874-3701 - (301) 874-3799 | 62 |
| (301) 874-38** | (301) 874-3802 - (301) 874-3896 | 58 |
| (301) 874-39** | (301) 874-3900 - (301) 874-3999 | 65 |
US Phone Directory: (301) 874-3***
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