I’ve spent some time browsing through publicly available sources to find out what are various identification numbers across Europe, especially those that can be treated as “personal data”. The numbers listed below include national identification, tax, health, social security and bank codes that I was able to identify. I’ve been also trying to build a regular expression pattern for each number. This should work well for detection in Intrustion Prevention Systems and Data Leakage Prevention systems. I’d appreciate any corrections and updates to this list.
| Region</td> | Name</td> | Description</td> | Regex</td> | Example</td> </tr> </thead> |
|---|---|---|---|---|
| Austria</td> | ZMR-Zahl | National identification number - Zentrales Melderegister (Central Register of Residents - CRR) | [0-9]{12} | 000247681888 | </tr>
| Austria</td> | ASVG | Social insurance number | [0-9]{10} | 1234030869 | </tr>
| Austria</td> | ssPIN | New national identification number | [A-Za-z0-9+/]{22}[A-Za-z0-9+/=][A-Za-z0-9+/=] | MDEyMzQ1Njc4OWFiY2RlZg== | </tr>
| Belgium</td> | BE.ID | Identification number of the National Register. Also used on SIS (social security) card | [0-9]{2}\.?[0-9]{2}\.?[0-9]{2}-[0-9]{3}\.?[0-9]{2} | 70.01.16-287.31 | </tr>
| Bulgaria</td> | EGN | Uniform Civil Number (Bulgarian: Единен граждански номер | [0-9]{2}[0,1,2,4][0-9][0-9]{2}[0-9]{4} | 7608010133 | </tr>
| Czech, Slovakia</td> | RČ | Birth Number (Rodné číslo) | [0-9]{2}[0,1,5][0-9][0-9]{2}/?[0-9]{4} | 685229/4449 | </tr>
| Czech, Slovakia</td> | ČOP | Citizen's Identification Card Number (Číslo občianskeho preukazu) | [A-Z]{2}[0-9]{6} | </tr> |
| Denmark</td> | CPR | CPR-nummer (personnummer) | [0-9]{2}[0,1][0-9][0-9]{2}-[0-9]{4} | 020955-2017 | </tr>
| Estonia</td> | IK | Isikukood (personal code) | [1-6][0-9]{2}[1,2][0-9][0-9]{2}[0-9]{4} | 47111119876 | </tr>
| Europe</td> | IBAN | ISO 13616 with ISO 3166 country code prefix in compact format | [A-Z]{2}?[ ]?[0-9]{2}[ ]?[0-9]{4}[ ]?[0-9]{4}[ ]?[0-9]{4}[ ]?[0-9]{4}[ ]?[0-9]{4} | PL 10 1140 2017 0000 4202 0971 5311 | </tr>
| Finland</td> | HETU | Personal identity code (henkilötunnus) | [0-9]{2}\.?[0,1][0-9]\.?[0-9]{2}[-+A][0-9]{3}[A-Z] | 101052-719E | </tr>
| France</td> | NIR | Social security number (INSEE) | [1,2][ ]?[0-9]{2}[ ]?[0,1,2,3,5][0-9][ ]?[0-9A-Z]{5}[ ]?[0-9]{3}[ ]?[0-9]{2} | 1 51 02 46102 043 25 | </tr>
| Germany</td> | PK | Personenkennziffer (Bundeswehr) | [0-9]{2}[0,1][0-9][0-9]{2}-[A-Z]-[0-9]{5} | 261083-C-20917 | </tr>
| Germany</td> | Steuer-ID | Steuer-Identifikationsnummer | [0-9]{3}/?[0-9]{4}/?[0-9]{4} | 316/5756/0463 | </tr>
| Germany</td> | VSNR, RVNR | Versicherungsnummer, Rentenversicherungsnummer | [0-9]{2}[0-9]{2}[0,1][0-9][0-9]{2}[A-Z][0-9]{2}[0-9] | 65170839J003 | </tr>
| Greece</td> | Tautotita | Tautotita | [A-Z][ -]?[0-9]{6} | P 000007 | </tr>
| Hungary</td> | TAJ | Social insurance number (TAJ szám) | [0-9]{3}[ ]?[0-9]{3}[ ][0-9]{3} | 123 456 789 | </tr>
| Hungary</td> | Szam | Personal identfication number (Személyi szám) | [1-8][ ]?[0-9]{2}[0,1][0-9][0-9]{2}[ ]?[0-9]{4} | 1 651105 6666 | </tr>
| Ireland</td> | PPS | Personal Public Service Number | [0-9]{7}[A-Z]W? | 1234567A 1234567FW | </tr>
| Italy</td> | CF | Codice fiscale | [A-Z]{6}[0-9]{2}[A-E,H,L,M,P,R-T][0-9]{2}[A-Z0-9]{5} | PLDTLL47S04L424T | </tr>
| Latvia</td> | PK | Personal no (Personas kodas) | [0-9]{2}[0,1][0-9][0-9]-[0-9]{5} | 161171-22345 | </tr>
| Lithuania</td> | AK | Personal code (Asmens kodas) | [3-6][0-9]{2}[0,1][0-9][0-9]{2}[0-9]{4} | 45911231023 | </tr>
| Netherlands</td> | BSN | Burgerservicenummer, sofinummer (Citizen's Service Number). | [0-9]{9} | 987654321 | </tr>
| Norway</td> | FN | Fødselsnummer | [0-9]{2}[0,1][0-9][0-9]{2}[ ]?[0-9]{5} | 010168 46647 | </tr>
| Poland</td> | PESEL | National identification number | [0-9]{4}[0-3]{1}[0-9}{1}[0-9]{5} | 44051401458 | </tr>
| Romania</td> | CNF | Nr personal | [1-8][0-9]{2}[0,1][0-9][0-9]{2}[0-9]{6} | 2121212121218 | </tr>
| Spain</td> | DNI | Documento Nacional de Identidad | [0-9,X,M,L,K,Y][0-9]{7}[A-Z] | 99999999-R | </tr>
| Sweden</td> | Personnr | Personal id number | [0-9]{2}[0-1][0-9][0-9]{2}[-+][0-9]{4} | 610321-3499 | </tr>
| Switzerland</td> | AVS | Old AVS format with personal data encoded | [0-9]{3}\.?[0-9]{2}\.?[0-9]{3}\.?[0-9]{3} | 324.65.242.000 | </tr>
| Switzerland</td> | AVS 2008 | New AVS format (16 digits with constant prefix 756, which is ISO 3166-1 country code) | 756\.?[0-9]{4}\.?[0-9]{4}\.?[0-9]{2} | 756.5152.7017.84 | </tr>
| UK</td> | NI | National identification number | [A-CEGHJ-PR-TW-Z][A-CEGHJ-NPR-TW-Z]{1}[0-9]{6}[A-DFM]? | JG103759A | </tr>
| UK</td> | NINO | National insurance number | ^([ACEHJLMOPRSW-Yacehjlmoprsw-y][A-CEGHJ-NPRSTW-Za-ceghj-nprstw-z]|[Bb][A-CEHJ-NPRSTW-Za-cehj-nprstw-z]|[Gg][ACEGHJ-NPRSTW-Zaceghj-nprstw-z]|[Kk][A-CEGHJ-MPRSTW-Za-ceghj-mprstw-z]|[Nn][A-CEGHJLMNPRSW-Za-ceghjlmnprsw-z]|[Tt][A-CEGHJ-MPRSTW-Za-ceghj-mprstw-z]|[Zz][A-CEGHJ-NPRSTW-Ya-ceghj-nprstw-y])[0-9]{6}[A-Da-d ]?$ | JG 12 13 16 A, AB123456C | </tr>
| UK</td> | NHS | UK NHS Number | [0-9]{3}[ -]?[0-9]{3}[ -]?[0-9]{4} | 401 023 2137 | </tr> </tbody> </table>