Free Regular Expressions Examples
| Name | Example | Regular Expression |
| US Zip Code (5 Digits) | 43035 | ^[0-9]{5}$ |
| US Zip Code (5-4 Digits) | 43035-2134 | ^[0-9]{5}-[0-9]{4}$ |
| US Zip Code (5 or 5-4 Digits) | 43035-2134 | ^[0-9]{5}$|^[0-9]{5}-[0-9]{4}$ |
| US Social Security Number | 400-01-1234 | ^[0-9]{3}-[0-9]{2}-[0-9]{4}$ |
| Canadian SIN | 400-01-1234 | ^[0-9]{3}-[0-9]{3}-[0-9]{3}$ |
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