| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 490-30** | (510) 490-3001 - (510) 490-3099 | 59 |
| (510) 490-31** | (510) 490-3100 - (510) 490-3196 | 50 |
| (510) 490-32** | (510) 490-3200 - (510) 490-3299 | 50 |
| (510) 490-33** | (510) 490-3301 - (510) 490-3399 | 69 |
| (510) 490-34** | (510) 490-3400 - (510) 490-3499 | 50 |
| (510) 490-35** | (510) 490-3500 - (510) 490-3597 | 53 |
| (510) 490-36** | (510) 490-3600 - (510) 490-3696 | 47 |
| (510) 490-37** | (510) 490-3705 - (510) 490-3797 | 54 |
| (510) 490-38** | (510) 490-3800 - (510) 490-3898 | 29 |
| (510) 490-39** | (510) 490-3901 - (510) 490-3998 | 51 |
US Phone Directory: (510) 490-3***
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