| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 238-40** | (510) 238-4000 - (510) 238-4080 | 6 |
| (510) 238-41** | (510) 238-4100 - (510) 238-4190 | 4 |
| (510) 238-42** | (510) 238-4212 - (510) 238-4261 | 3 |
| (510) 238-43** | (510) 238-4306 - (510) 238-4350 | 3 |
| (510) 238-44** | (510) 238-4401 - (510) 238-4492 | 6 |
| (510) 238-45** | (510) 238-4523 - (510) 238-4589 | 9 |
| (510) 238-46** | (510) 238-4600 - (510) 238-4697 | 8 |
| (510) 238-47** | (510) 238-4705 - (510) 238-4774 | 6 |
| (510) 238-48** | (510) 238-4851 - (510) 238-4851 | 1 |
| (510) 238-49** | (510) 238-4948 - (510) 238-4999 | 7 |
US Phone Directory: (510) 238-4***
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