| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (210) 421-30** | (210) 421-3003 - (210) 421-3095 | 26 |
| (210) 421-31** | (210) 421-3104 - (210) 421-3199 | 36 |
| (210) 421-32** | (210) 421-3200 - (210) 421-3290 | 34 |
| (210) 421-33** | (210) 421-3300 - (210) 421-3397 | 40 |
| (210) 421-34** | (210) 421-3401 - (210) 421-3499 | 36 |
| (210) 421-35** | (210) 421-3505 - (210) 421-3591 | 30 |
| (210) 421-36** | (210) 421-3600 - (210) 421-3682 | 30 |
| (210) 421-37** | (210) 421-3706 - (210) 421-3799 | 28 |
| (210) 421-38** | (210) 421-3804 - (210) 421-3895 | 24 |
| (210) 421-39** | (210) 421-3900 - (210) 421-3999 | 34 |
US Phone Directory: (210) 421-3***
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