| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (408) 280-50** | (408) 280-5000 - (408) 280-5099 | 66 |
| (408) 280-51** | (408) 280-5101 - (408) 280-5196 | 56 |
| (408) 280-52** | (408) 280-5200 - (408) 280-5299 | 60 |
| (408) 280-53** | (408) 280-5300 - (408) 280-5397 | 62 |
| (408) 280-54** | (408) 280-5400 - (408) 280-5498 | 65 |
| (408) 280-55** | (408) 280-5500 - (408) 280-5599 | 65 |
| (408) 280-56** | (408) 280-5600 - (408) 280-5699 | 57 |
| (408) 280-57** | (408) 280-5701 - (408) 280-5799 | 59 |
| (408) 280-58** | (408) 280-5800 - (408) 280-5896 | 63 |
| (408) 280-59** | (408) 280-5900 - (408) 280-5999 | 55 |
US Phone Directory: (408) 280-5***
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