| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 748-30** | (301) 748-3002 - (301) 748-3098 | 26 |
| (301) 748-31** | (301) 748-3103 - (301) 748-3197 | 33 |
| (301) 748-32** | (301) 748-3202 - (301) 748-3294 | 26 |
| (301) 748-33** | (301) 748-3327 - (301) 748-3392 | 22 |
| (301) 748-34** | (301) 748-3407 - (301) 748-3495 | 22 |
| (301) 748-35** | (301) 748-3503 - (301) 748-3599 | 24 |
| (301) 748-36** | (301) 748-3600 - (301) 748-3697 | 28 |
| (301) 748-37** | (301) 748-3705 - (301) 748-3799 | 28 |
| (301) 748-38** | (301) 748-3800 - (301) 748-3898 | 32 |
| (301) 748-39** | (301) 748-3902 - (301) 748-3999 | 33 |
US Phone Directory: (301) 748-3***
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