| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (313) 531-30** | (313) 531-3000 - (313) 531-3093 | 44 |
| (313) 531-31** | (313) 531-3100 - (313) 531-3197 | 43 |
| (313) 531-32** | (313) 531-3200 - (313) 531-3299 | 64 |
| (313) 531-33** | (313) 531-3300 - (313) 531-3399 | 35 |
| (313) 531-34** | (313) 531-3400 - (313) 531-3499 | 37 |
| (313) 531-35** | (313) 531-3500 - (313) 531-3596 | 65 |
| (313) 531-36** | (313) 531-3603 - (313) 531-3699 | 59 |
| (313) 531-37** | (313) 531-3700 - (313) 531-3799 | 55 |
| (313) 531-38** | (313) 531-3800 - (313) 531-3899 | 54 |
| (313) 531-39** | (313) 531-3901 - (313) 531-3998 | 48 |
US Phone Directory: (313) 531-3***
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