| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (925) 388-20** | (925) 388-2000 - (925) 388-2099 | 53 |
| (925) 388-21** | (925) 388-2100 - (925) 388-2188 | 3 |
| (925) 388-22** | (925) 388-2222 - (925) 388-2233 | 3 |
| (925) 388-23** | (925) 388-2301 - (925) 388-2384 | 3 |
| (925) 388-29** | (925) 388-2954 - (925) 388-2954 | 1 |
US Phone Directory: (925) 388-2***
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