| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 644-90** | (510) 644-9000 - (510) 644-9000 | 1 |
| (510) 644-91** | (510) 644-9100 - (510) 644-9191 | 15 |
| (510) 644-92** | (510) 644-9200 - (510) 644-9299 | 49 |
| (510) 644-93** | (510) 644-9300 - (510) 644-9399 | 65 |
| (510) 644-94** | (510) 644-9400 - (510) 644-9498 | 71 |
| (510) 644-95** | (510) 644-9500 - (510) 644-9598 | 60 |
| (510) 644-96** | (510) 644-9600 - (510) 644-9699 | 66 |
| (510) 644-97** | (510) 644-9700 - (510) 644-9798 | 68 |
| (510) 644-98** | (510) 644-9800 - (510) 644-9898 | 62 |
| (510) 644-99** | (510) 644-9900 - (510) 644-9999 | 44 |
US Phone Directory: (510) 644-9***
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