| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (520) 579-50** | (520) 579-5000 - (520) 579-5098 | 5 |
| (520) 579-51** | (520) 579-5105 - (520) 579-5188 | 5 |
| (520) 579-52** | (520) 579-5200 - (520) 579-5299 | 87 |
| (520) 579-53** | (520) 579-5300 - (520) 579-5398 | 81 |
| (520) 579-54** | (520) 579-5422 - (520) 579-5498 | 32 |
| (520) 579-55** | (520) 579-5500 - (520) 579-5599 | 83 |
| (520) 579-56** | (520) 579-5600 - (520) 579-5699 | 73 |
| (520) 579-57** | (520) 579-5700 - (520) 579-5799 | 80 |
| (520) 579-58** | (520) 579-5800 - (520) 579-5898 | 78 |
| (520) 579-59** | (520) 579-5900 - (520) 579-5999 | 77 |
US Phone Directory: (520) 579-5***
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