| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 237-40** | (510) 237-4000 - (510) 237-4098 | 54 |
| (510) 237-41** | (510) 237-4102 - (510) 237-4199 | 53 |
| (510) 237-42** | (510) 237-4200 - (510) 237-4298 | 55 |
| (510) 237-43** | (510) 237-4300 - (510) 237-4398 | 62 |
| (510) 237-44** | (510) 237-4400 - (510) 237-4499 | 53 |
| (510) 237-45** | (510) 237-4501 - (510) 237-4597 | 59 |
| (510) 237-46** | (510) 237-4604 - (510) 237-4698 | 51 |
| (510) 237-47** | (510) 237-4700 - (510) 237-4798 | 50 |
| (510) 237-48** | (510) 237-4800 - (510) 237-4898 | 54 |
| (510) 237-49** | (510) 237-4902 - (510) 237-4998 | 51 |
US Phone Directory: (510) 237-4***
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