| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 520-80** | (510) 520-8011 - (510) 520-8099 | 10 |
| (510) 520-81** | (510) 520-8165 - (510) 520-8196 | 7 |
| (510) 520-82** | (510) 520-8202 - (510) 520-8289 | 13 |
| (510) 520-83** | (510) 520-8300 - (510) 520-8398 | 18 |
| (510) 520-84** | (510) 520-8406 - (510) 520-8498 | 16 |
| (510) 520-85** | (510) 520-8526 - (510) 520-8595 | 13 |
| (510) 520-86** | (510) 520-8602 - (510) 520-8698 | 12 |
| (510) 520-87** | (510) 520-8705 - (510) 520-8793 | 15 |
| (510) 520-88** | (510) 520-8813 - (510) 520-8898 | 12 |
| (510) 520-89** | (510) 520-8900 - (510) 520-8996 | 21 |
US Phone Directory: (510) 520-8***
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