| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 331-30** | (510) 331-3016 - (510) 331-3076 | 6 |
| (510) 331-31** | (510) 331-3106 - (510) 331-3194 | 13 |
| (510) 331-32** | (510) 331-3224 - (510) 331-3286 | 8 |
| (510) 331-33** | (510) 331-3300 - (510) 331-3399 | 7 |
| (510) 331-34** | (510) 331-3414 - (510) 331-3483 | 7 |
| (510) 331-35** | (510) 331-3501 - (510) 331-3583 | 6 |
| (510) 331-36** | (510) 331-3601 - (510) 331-3687 | 9 |
| (510) 331-37** | (510) 331-3707 - (510) 331-3789 | 7 |
| (510) 331-38** | (510) 331-3813 - (510) 331-3896 | 6 |
| (510) 331-39** | (510) 331-3930 - (510) 331-3979 | 3 |
US Phone Directory: (510) 331-3***
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