| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 507-20** | (510) 507-2046 - (510) 507-2065 | 2 |
| (510) 507-21** | (510) 507-2113 - (510) 507-2194 | 3 |
| (510) 507-22** | (510) 507-2205 - (510) 507-2274 | 4 |
| (510) 507-23** | (510) 507-2303 - (510) 507-2352 | 3 |
| (510) 507-24** | (510) 507-2468 - (510) 507-2478 | 2 |
| (510) 507-25** | (510) 507-2500 - (510) 507-2578 | 5 |
| (510) 507-26** | (510) 507-2679 - (510) 507-2679 | 1 |
| (510) 507-27** | (510) 507-2741 - (510) 507-2777 | 2 |
| (510) 507-28** | (510) 507-2810 - (510) 507-2810 | 1 |
| (510) 507-29** | (510) 507-2915 - (510) 507-2988 | 8 |
US Phone Directory: (510) 507-2***
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