The following databases are searched:

 PET-CALL Singapore – Singapore
 IFTA Germany
 Animal-ID - Russia
 NDG - The Netherlands
 MCDAEI - Moldavia
 SKK - Sweden
 Belarussian Pets Identification Database
 Back Home Club - The Netherlands
 AAR - Australia
 VBK - The Netherlands
 ANIS - Switzerland
 Dyreidentitet - Norway
 Deutscher Tierschutzbund - Germany
 Anibase - United Kingdom
 GAID - Georgia
 W-Rom Database – Romania
 SRZ - Slovak Republic
 TASSO e.V. - Germany
 PetLink - USA
 NRMZ - Czech Republic
 tracer.com - Ukraina
 BH – Czech Republic
 ANIMALDATA.COM - Austria
 Petlog - United Kingdom
 Lemmiklooma Register - Estonia
 Animark-IKC - Ireland
 PET BUL Turkey - Turkey
 PetBase - The Netherlands
 Petcard - Austria
 PetLink - Brazil