| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 293-30** | (301) 293-3000 - (301) 293-3097 | 68 |
| (301) 293-31** | (301) 293-3100 - (301) 293-3199 | 70 |
| (301) 293-32** | (301) 293-3200 - (301) 293-3299 | 74 |
| (301) 293-33** | (301) 293-3300 - (301) 293-3399 | 67 |
| (301) 293-34** | (301) 293-3400 - (301) 293-3498 | 64 |
| (301) 293-35** | (301) 293-3500 - (301) 293-3599 | 69 |
| (301) 293-36** | (301) 293-3600 - (301) 293-3699 | 68 |
| (301) 293-38** | (301) 293-3818 - (301) 293-3850 | 3 |
| (301) 293-39** | (301) 293-3900 - (301) 293-3999 | 67 |
US Phone Directory: (301) 293-3***
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