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Regular Expression Details

Title Test Find Pattern Title
Expression
^([4]{1})([0-9]{12,15})$
Description
Validate against a visa card number. All visa cards start with a 4 and are followed by 12 to 15 more numbers.
Matches
4125632152365 | 418563256985214 | 4125632569856321
Non-Matches
3125652365214 | 41256321256 | 42563985632156322
Author Rating: Not yet rated. Jeff Johns
Source
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