| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 635-40** | (510) 635-4000 - (510) 635-4099 | 54 |
| (510) 635-41** | (510) 635-4101 - (510) 635-4196 | 50 |
| (510) 635-42** | (510) 635-4201 - (510) 635-4296 | 46 |
| (510) 635-43** | (510) 635-4300 - (510) 635-4397 | 52 |
| (510) 635-44** | (510) 635-4400 - (510) 635-4498 | 55 |
| (510) 635-45** | (510) 635-4503 - (510) 635-4596 | 48 |
| (510) 635-46** | (510) 635-4600 - (510) 635-4697 | 49 |
| (510) 635-47** | (510) 635-4702 - (510) 635-4798 | 47 |
| (510) 635-48** | (510) 635-4800 - (510) 635-4898 | 51 |
| (510) 635-49** | (510) 635-4904 - (510) 635-4998 | 44 |
US Phone Directory: (510) 635-4***
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