| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (202) 257-10** | (202) 257-1003 - (202) 257-1098 | 14 |
| (202) 257-11** | (202) 257-1101 - (202) 257-1193 | 20 |
| (202) 257-12** | (202) 257-1202 - (202) 257-1296 | 19 |
| (202) 257-13** | (202) 257-1307 - (202) 257-1394 | 15 |
| (202) 257-14** | (202) 257-1406 - (202) 257-1494 | 11 |
| (202) 257-15** | (202) 257-1505 - (202) 257-1596 | 15 |
| (202) 257-16** | (202) 257-1613 - (202) 257-1697 | 6 |
| (202) 257-17** | (202) 257-1717 - (202) 257-1797 | 16 |
| (202) 257-18** | (202) 257-1800 - (202) 257-1886 | 12 |
| (202) 257-19** | (202) 257-1903 - (202) 257-1999 | 19 |
US Phone Directory: (202) 257-1***
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