| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 371-90** | (301) 371-9000 - (301) 371-9098 | 79 |
| (301) 371-91** | (301) 371-9100 - (301) 371-9199 | 76 |
| (301) 371-92** | (301) 371-9200 - (301) 371-9299 | 75 |
| (301) 371-93** | (301) 371-9300 - (301) 371-9398 | 83 |
| (301) 371-94** | (301) 371-9400 - (301) 371-9499 | 78 |
| (301) 371-95** | (301) 371-9500 - (301) 371-9599 | 83 |
| (301) 371-96** | (301) 371-9601 - (301) 371-9699 | 77 |
| (301) 371-97** | (301) 371-9700 - (301) 371-9799 | 68 |
| (301) 371-98** | (301) 371-9800 - (301) 371-9899 | 19 |
| (301) 371-99** | (301) 371-9900 - (301) 371-9999 | 55 |
US Phone Directory: (301) 371-9***
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