| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (423) 521-30** | (423) 521-3000 - (423) 521-3092 | 36 |
| (423) 521-31** | (423) 521-3101 - (423) 521-3199 | 43 |
| (423) 521-32** | (423) 521-3201 - (423) 521-3298 | 37 |
| (423) 521-33** | (423) 521-3302 - (423) 521-3397 | 34 |
| (423) 521-34** | (423) 521-3403 - (423) 521-3498 | 28 |
| (423) 521-35** | (423) 521-3501 - (423) 521-3598 | 40 |
| (423) 521-36** | (423) 521-3605 - (423) 521-3697 | 38 |
| (423) 521-37** | (423) 521-3702 - (423) 521-3799 | 35 |
| (423) 521-38** | (423) 521-3801 - (423) 521-3894 | 40 |
| (423) 521-39** | (423) 521-3900 - (423) 521-3998 | 47 |
US Phone Directory: (423) 521-3***
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