| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 420-40** | (510) 420-4056 - (510) 420-4056 | 1 |
| (510) 420-41** | (510) 420-4131 - (510) 420-4173 | 3 |
| (510) 420-43** | (510) 420-4364 - (510) 420-4364 | 1 |
| (510) 420-45** | (510) 420-4510 - (510) 420-4599 | 55 |
| (510) 420-46** | (510) 420-4600 - (510) 420-4600 | 1 |
| (510) 420-48** | (510) 420-4888 - (510) 420-4888 | 1 |
| (510) 420-49** | (510) 420-4971 - (510) 420-4971 | 1 |
US Phone Directory: (510) 420-4***
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