| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 572-90** | (301) 572-9000 - (301) 572-9099 | 60 |
| (301) 572-91** | (301) 572-9100 - (301) 572-9199 | 54 |
| (301) 572-92** | (301) 572-9201 - (301) 572-9298 | 50 |
| (301) 572-93** | (301) 572-9301 - (301) 572-9383 | 38 |
| (301) 572-94** | (301) 572-9401 - (301) 572-9499 | 8 |
| (301) 572-95** | (301) 572-9502 - (301) 572-9599 | 28 |
| (301) 572-96** | (301) 572-9602 - (301) 572-9699 | 29 |
| (301) 572-97** | (301) 572-9702 - (301) 572-9799 | 46 |
| (301) 572-98** | (301) 572-9803 - (301) 572-9853 | 3 |
US Phone Directory: (301) 572-9***
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