| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (210) 531-00** | (210) 531-0000 - (210) 531-0099 | 92 |
| (210) 531-01** | (210) 531-0100 - (210) 531-0199 | 89 |
| (210) 531-02** | (210) 531-0200 - (210) 531-0299 | 92 |
| (210) 531-03** | (210) 531-0300 - (210) 531-0399 | 90 |
| (210) 531-04** | (210) 531-0400 - (210) 531-0497 | 92 |
| (210) 531-05** | (210) 531-0500 - (210) 531-0599 | 95 |
| (210) 531-06** | (210) 531-0600 - (210) 531-0699 | 89 |
| (210) 531-07** | (210) 531-0700 - (210) 531-0799 | 88 |
| (210) 531-08** | (210) 531-0800 - (210) 531-0899 | 88 |
| (210) 531-09** | (210) 531-0900 - (210) 531-0998 | 90 |
US Phone Directory: (210) 531-0***
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