| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (423) 378-40** | (423) 378-4000 - (423) 378-4098 | 52 |
| (423) 378-41** | (423) 378-4101 - (423) 378-4199 | 67 |
| (423) 378-42** | (423) 378-4201 - (423) 378-4299 | 62 |
| (423) 378-43** | (423) 378-4300 - (423) 378-4399 | 58 |
| (423) 378-44** | (423) 378-4400 - (423) 378-4499 | 72 |
| (423) 378-45** | (423) 378-4501 - (423) 378-4599 | 64 |
| (423) 378-46** | (423) 378-4600 - (423) 378-4699 | 67 |
| (423) 378-47** | (423) 378-4700 - (423) 378-4795 | 57 |
| (423) 378-48** | (423) 378-4800 - (423) 378-4899 | 65 |
| (423) 378-49** | (423) 378-4900 - (423) 378-4999 | 59 |
US Phone Directory: (423) 378-4***
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