RegExLib.com - The first Regular Expression Library on the Web!

• Recent Expressions

• Regex Cheat Sheet
• Search
• Regex Tester
• Browse Expressions
• Add Regex
• Manage My Expressions
• Contributors
• Regex Resources
• Web Services
• Advertise
• Contact Us
• Register
• Recent Expressions
• Recent Comments

• Regex Forums
• Regex Blogs
• Regex Mailing List

• Michael Ash (55)
• Steven Smith (42)
• Matthew Harris (35)
• tedcambron (29)
• PJWhitfield (28)
• Vassilis Petroulias (26)
• Matt Brooke (22)
• Juraj Hajdúch (SK) (21)
• Mukundh (21)
• RobertKaw (19)
• All Contributors

External Data Source

Source

Regular Expression
^(((\d{4}((0[13578]|1[02])(0[1-9]|[12]\d|3[01])|(0[13456789]|1[012])(0[1-9]|[12]\d|30)|02(0[1-9]|1\d|2[0-8])))|((\d{2}[02468][048]|\d{2}[13579][26]))0229)){0,8}$