| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 948-80** | (510) 948-8003 - (510) 948-8099 | 84 |
| (510) 948-81** | (510) 948-8100 - (510) 948-8199 | 85 |
| (510) 948-82** | (510) 948-8200 - (510) 948-8299 | 78 |
| (510) 948-83** | (510) 948-8300 - (510) 948-8399 | 90 |
| (510) 948-84** | (510) 948-8400 - (510) 948-8499 | 79 |
| (510) 948-85** | (510) 948-8520 - (510) 948-8599 | 63 |
| (510) 948-86** | (510) 948-8620 - (510) 948-8692 | 18 |
| (510) 948-87** | (510) 948-8748 - (510) 948-8792 | 4 |
| (510) 948-88** | (510) 948-8844 - (510) 948-8899 | 6 |
US Phone Directory: (510) 948-8***
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