Regex Patterns for Personal Data…
It seems that I am always searching for good regular expressions, but really accurate and concise ones are seemingly impossible to find. Most do very poor jobs at covering corner cases, or they are completely wrong and useless. For example, I recently discovered a regex designed to match an MD5 hash, which is a 32-digit hexadecimal number. The regex author had specified “^([a-z0-9]{32})$” (which included numbers and all letters) when, by definition, it clearly should have been “\b[a-f0-9]{32}\b” (only numbers and the letters A through F).
So, as usual, I set out to create my own expressions. The expressions below were developed and tested using official formats, definitions, and sample data valid as of December 2007. Be aware that all of the following assume case insensitivity, so they will grab both upper- and lower-case letters. And, assuming you’re going to cut and paste, don’t forget to remove the carriage return from those expressions that fall onto a second line.
Regular Expressions
Almost all major credit cards (and most debit cards) (example=4111 1111 1111 1111):
\b(1800|2131|30[0-5]\d|3[4-7]\d{2}|4\d{3}|5[0-5]\d{2}|6011|6[2357]
\d{2})[- ]?(\d{4}[- ]?\d{4}[- ]?\d{4}|\d{6}[- ]?\d{5})\bAustrian Social Security Number (de=Sozialversicherungsnummer) (example=1788011550):
\b\d{4}(0[1-9]|[12]\d|3[01])(0[1-9]|1[0-5])\d{2}\bBulgarian Uniform Civil Number (bg=Единен граждански номер) (example:7523169263):
\b\d{2}([024][1-9]|[135][0-2])(0[1-9]|[12]\d|3[01])[-+]?\d{4}\bCanadian Social Insurance Number:
\b[1-9]\d{2}[- ]?\d{3}[- ]?\d{3}\bChinese National Identification Card Number (cn=身份证):
\b\d{6}(19|20)\d{2}(0[1-9]|1[0-2])(0[1-9]|[12]\d|3[01])\d{4}\bCroatian Master Citizen Number (hr=Matični broj građana):
\b(0[1-9]|[12]\d|3[01])(0[1-9]|1[0-2])(9\d{2}|0[01]\d)\d{6}\bDanish Civil Registration Number (dk=Personnummer, CPR Nummer):
\b(0[1-9]|[12]\d|3[01])(0[1-9]|1[0-2])\d{2}[-+]?\d{4}\bFinnish Social Security Number (fi=Henkilötunnus) (example=311280-999J):
\b(0[1-9]|[12]\d|3[01])(0[1-9]|1[0-2])\d{2}[-+a]\d{3}\w\bIndian Permanent Account Number:
\b[a-z]{3}[abcfghjlpt][a-z]\d{4}[a-z]\bIndian Vehicle License Plate Number (example=DL 11 C AA 1111):
\b([a-z]{2}[ ]\d{1,2}|dl[ ][1-9]?\d[ ][cprstvy])[ ][a-z]{0,2}[ ]\d{1,4}\bItalian Fiscal Code (it=Codice fiscale) (example=HDDFTH63H28Z352V):
\b([bcdfghj-np-tv-z][a-z]{2}){2}\d{2}[a-ehlmprst]([04][1-9]|
[1256]\d|[37][01])(\d[a-z]{3}|z\d{3})[a-z]\bNorwegian Social Security Number (no=Personnummer, Fødselsnummer, SSNR):
\b(0[1-9]|[12]\d|3[01])([04][1-9]|[15][0-2])\d{7}\bRomanian Personal Numeric Code (ro=Cod Numeric Personal) (example=1800101221144):
\b[1-8]\d{2}(0[1-9]|1[0-2])(0[1-9]|[12]\d|3[01])(0[1-9]|[1-4]\d|
5[0-2]|99)\d{4}\bSouth Korean Resident Registration Number (ko=주민등록번호):
\b\d{2}(0[1-9]|1[0-2])(0[1-9]|[12]\d|3[01])\-[0-49]\d{6}\bSwedish Personal Identification Number (se=Personnummer):
\b(19\d{2}|20\d{2}|\d{2})(0[1-9]|1[0-2])(0[1-9]|[12]\d|3[01])
[-+]?\d{4}\bTaiwanese National Identification Card Number:
\b[a-z][12]\d{8}\bUnited Kingdom National Insurance Number (example=AA 01 23 44 B):
\b[abceghj-prstw-z][abceghj-nprstw-z][ ]?\d{2}[ ]?\d{2}[ ]?\d{2}[ ]?[a-dfm]?\bUnited States Social Security Number (example=078-05-1120):
\b(?!000)(?!666)([0-6]\d{2}|7([0-356]\d|7[012]))[- ]?(?!00)\d{2}
[- ]?(?!0000)\d{4}\bFeel free to use these anywhere for any reason. You do not need to credit me at all, but if you do use them or plan to use them, I’d appreciate you leaving a comment that tells me how they’re being used so I can have some bragging rights! Or buy me a cup of coffee. 
Disclaimer
Your use of this website and any information offered here is at your own risk. I make no representations about the suitability of the information for any purpose. In no event shall I be liable for any special, indirect, or consequential damages or any damages whatsoever resulting from loss of use, data or profits, whether in an action of contract, negligence or other tortious action, arising out of or in connection with the use or performance of this website or any information offered here. Basically, if you use any of these regular expressions and they don’t work, it’s not my fault because you should have checked them yourself before relying on them. Consider yourself warned.
