| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (925) 439-40** | (925) 439-4000 - (925) 439-4048 | 10 |
| (925) 439-41** | (925) 439-4100 - (925) 439-4189 | 22 |
| (925) 439-42** | (925) 439-4200 - (925) 439-4200 | 1 |
| (925) 439-43** | (925) 439-4311 - (925) 439-4311 | 1 |
| (925) 439-44** | (925) 439-4455 - (925) 439-4486 | 3 |
| (925) 439-45** | (925) 439-4565 - (925) 439-4585 | 2 |
| (925) 439-46** | (925) 439-4600 - (925) 439-4698 | 74 |
| (925) 439-47** | (925) 439-4723 - (925) 439-4789 | 9 |
| (925) 439-48** | (925) 439-4841 - (925) 439-4880 | 6 |
| (925) 439-49** | (925) 439-4958 - (925) 439-4991 | 2 |
US Phone Directory: (925) 439-4***
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