| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 604-00** | (510) 604-0000 - (510) 604-0099 | 22 |
| (510) 604-01** | (510) 604-0105 - (510) 604-0197 | 18 |
| (510) 604-02** | (510) 604-0208 - (510) 604-0287 | 19 |
| (510) 604-03** | (510) 604-0301 - (510) 604-0384 | 17 |
| (510) 604-04** | (510) 604-0403 - (510) 604-0499 | 29 |
| (510) 604-05** | (510) 604-0501 - (510) 604-0586 | 15 |
| (510) 604-06** | (510) 604-0604 - (510) 604-0697 | 20 |
| (510) 604-07** | (510) 604-0704 - (510) 604-0798 | 23 |
| (510) 604-08** | (510) 604-0800 - (510) 604-0899 | 21 |
| (510) 604-09** | (510) 604-0911 - (510) 604-0995 | 21 |
US Phone Directory: (510) 604-0***
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