| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (423) 531-10** | (423) 531-1000 - (423) 531-1099 | 56 |
| (423) 531-11** | (423) 531-1101 - (423) 531-1198 | 69 |
| (423) 531-12** | (423) 531-1200 - (423) 531-1299 | 76 |
| (423) 531-13** | (423) 531-1300 - (423) 531-1385 | 43 |
| (423) 531-14** | (423) 531-1400 - (423) 531-1499 | 66 |
| (423) 531-15** | (423) 531-1500 - (423) 531-1598 | 55 |
| (423) 531-16** | (423) 531-1612 - (423) 531-1684 | 11 |
| (423) 531-17** | (423) 531-1712 - (423) 531-1787 | 54 |
| (423) 531-18** | (423) 531-1800 - (423) 531-1899 | 75 |
| (423) 531-19** | (423) 531-1910 - (423) 531-1997 | 18 |
US Phone Directory: (423) 531-1***
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