| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 548-10** | (301) 548-1000 - (301) 548-1099 | 51 |
| (301) 548-11** | (301) 548-1158 - (301) 548-1182 | 2 |
| (301) 548-12** | (301) 548-1265 - (301) 548-1265 | 1 |
| (301) 548-13** | (301) 548-1383 - (301) 548-1398 | 5 |
| (301) 548-14** | (301) 548-1428 - (301) 548-1428 | 1 |
| (301) 548-15** | (301) 548-1500 - (301) 548-1569 | 17 |
| (301) 548-18** | (301) 548-1802 - (301) 548-1888 | 19 |
| (301) 548-19** | (301) 548-1982 - (301) 548-1987 | 2 |
US Phone Directory: (301) 548-1***
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