| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (240) 723-10** | (240) 723-1042 - (240) 723-1057 | 2 |
| (240) 723-11** | (240) 723-1104 - (240) 723-1175 | 4 |
| (240) 723-12** | (240) 723-1241 - (240) 723-1293 | 4 |
| (240) 723-13** | (240) 723-1337 - (240) 723-1383 | 5 |
| (240) 723-14** | (240) 723-1437 - (240) 723-1468 | 3 |
| (240) 723-15** | (240) 723-1531 - (240) 723-1596 | 4 |
| (240) 723-16** | (240) 723-1672 - (240) 723-1672 | 1 |
| (240) 723-17** | (240) 723-1724 - (240) 723-1799 | 4 |
| (240) 723-18** | (240) 723-1815 - (240) 723-1890 | 7 |
| (240) 723-19** | (240) 723-1947 - (240) 723-1947 | 1 |
US Phone Directory: (240) 723-1***
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