| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (312) 938-00** | (312) 938-0000 - (312) 938-0088 | 37 |
| (312) 938-01** | (312) 938-0100 - (312) 938-0198 | 37 |
| (312) 938-02** | (312) 938-0200 - (312) 938-0299 | 48 |
| (312) 938-03** | (312) 938-0300 - (312) 938-0396 | 35 |
| (312) 938-04** | (312) 938-0400 - (312) 938-0499 | 20 |
| (312) 938-05** | (312) 938-0504 - (312) 938-0599 | 39 |
| (312) 938-06** | (312) 938-0601 - (312) 938-0699 | 22 |
| (312) 938-07** | (312) 938-0700 - (312) 938-0796 | 17 |
| (312) 938-08** | (312) 938-0800 - (312) 938-0897 | 32 |
| (312) 938-09** | (312) 938-0900 - (312) 938-0997 | 29 |
US Phone Directory: (312) 938-0***
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