| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (312) 421-50** | (312) 421-5000 - (312) 421-5097 | 57 |
| (312) 421-51** | (312) 421-5100 - (312) 421-5194 | 53 |
| (312) 421-52** | (312) 421-5200 - (312) 421-5299 | 55 |
| (312) 421-53** | (312) 421-5300 - (312) 421-5398 | 51 |
| (312) 421-54** | (312) 421-5401 - (312) 421-5499 | 57 |
| (312) 421-55** | (312) 421-5500 - (312) 421-5597 | 39 |
| (312) 421-56** | (312) 421-5600 - (312) 421-5696 | 53 |
| (312) 421-57** | (312) 421-5700 - (312) 421-5799 | 52 |
| (312) 421-58** | (312) 421-5800 - (312) 421-5899 | 60 |
| (312) 421-59** | (312) 421-5900 - (312) 421-5997 | 57 |
US Phone Directory: (312) 421-5***
Welcome to PhoneOwner.com
We are a premium source for residential and business telephone numbers and other contact information.
Our data is collected from government agencies, property records and other public records sources.