| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (240) 393-10** | (240) 393-1010 - (240) 393-1012 | 2 |
| (240) 393-11** | (240) 393-1130 - (240) 393-1148 | 2 |
| (240) 393-12** | (240) 393-1200 - (240) 393-1243 | 2 |
| (240) 393-13** | (240) 393-1310 - (240) 393-1382 | 8 |
| (240) 393-14** | (240) 393-1430 - (240) 393-1466 | 3 |
| (240) 393-15** | (240) 393-1521 - (240) 393-1521 | 1 |
| (240) 393-16** | (240) 393-1641 - (240) 393-1649 | 2 |
| (240) 393-17** | (240) 393-1753 - (240) 393-1789 | 4 |
| (240) 393-18** | (240) 393-1821 - (240) 393-1879 | 4 |
| (240) 393-19** | (240) 393-1918 - (240) 393-1974 | 6 |
US Phone Directory: (240) 393-1***
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