| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (815) 603-30** | (815) 603-3001 - (815) 603-3097 | 28 |
| (815) 603-31** | (815) 603-3103 - (815) 603-3199 | 25 |
| (815) 603-32** | (815) 603-3200 - (815) 603-3298 | 21 |
| (815) 603-33** | (815) 603-3301 - (815) 603-3396 | 23 |
| (815) 603-34** | (815) 603-3400 - (815) 603-3498 | 32 |
| (815) 603-35** | (815) 603-3502 - (815) 603-3599 | 30 |
| (815) 603-36** | (815) 603-3601 - (815) 603-3699 | 31 |
| (815) 603-37** | (815) 603-3704 - (815) 603-3799 | 20 |
| (815) 603-38** | (815) 603-3804 - (815) 603-3892 | 24 |
| (815) 603-39** | (815) 603-3904 - (815) 603-3994 | 29 |
US Phone Directory: (815) 603-3***
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