| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 515-90** | (301) 515-9000 - (301) 515-9099 | 78 |
| (301) 515-91** | (301) 515-9100 - (301) 515-9199 | 72 |
| (301) 515-92** | (301) 515-9201 - (301) 515-9299 | 83 |
| (301) 515-93** | (301) 515-9303 - (301) 515-9399 | 65 |
| (301) 515-94** | (301) 515-9400 - (301) 515-9499 | 77 |
| (301) 515-95** | (301) 515-9502 - (301) 515-9599 | 74 |
| (301) 515-96** | (301) 515-9600 - (301) 515-9699 | 72 |
| (301) 515-97** | (301) 515-9707 - (301) 515-9799 | 21 |
| (301) 515-98** | (301) 515-9806 - (301) 515-9899 | 25 |
| (301) 515-99** | (301) 515-9903 - (301) 515-9992 | 49 |
US Phone Directory: (301) 515-9***
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