| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 243-00** | (510) 243-0000 - (510) 243-0099 | 2 |
| (510) 243-01** | (510) 243-0100 - (510) 243-0197 | 69 |
| (510) 243-02** | (510) 243-0201 - (510) 243-0299 | 75 |
| (510) 243-03** | (510) 243-0300 - (510) 243-0399 | 77 |
| (510) 243-04** | (510) 243-0400 - (510) 243-0499 | 75 |
| (510) 243-05** | (510) 243-0500 - (510) 243-0599 | 77 |
| (510) 243-06** | (510) 243-0601 - (510) 243-0699 | 75 |
| (510) 243-07** | (510) 243-0700 - (510) 243-0799 | 74 |
| (510) 243-08** | (510) 243-0800 - (510) 243-0898 | 80 |
| (510) 243-09** | (510) 243-0900 - (510) 243-0999 | 75 |
US Phone Directory: (510) 243-0***
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