I have 4 animals with microchips from different manufacturers. I have been attempting to update contact info. The equine search is a mess. I was told by some rescue groups to record their info into the canine databases. This is what I have learned: If you have the microchip id, go to http://www.petmicrochiplookup.org/ to find out more about the microchip Veterinary Industry: aahanet.org Pet Owners: healthypet.com microchip databases: http://rfid-usa.org/update-contacts https://www.avidid.com http://public.homeagain.com/index.html http://www.equisearch.com/ http://www.microchipidequine.com http://www.netposse.com http://www.avidequineid.com (obsolete) goes to http://www.microchipidequine.com http://www.equisearch.com/horses_care/health/rescue/microchip_083104/ - See more at: http://www.equisearch.com/horses_care/health/rescue/microchip_083104/#sthash.jn1e1eUR.dpuf The information about your electronically-identified horse can be entered on a database such as the International Equine Recovery Network (IERN) or the Horse Identification Program (HIP) of the Texas and Southwestern Cattle Raisers Association. http://www.electronicidinc.com/ is no longer in service. They used microchips manufactured for horses by Destron/Fearing. See USDA entry below. - See more at: http://www.equisearch.com/horses_care/health/rescue/microchip_083104/#sthash.mxY1xsA4.dpuf Digital Angel Corporation’s (formerly Destron Fearing) Life-Chip equine radio frequency identification (RFID) injectable transponder for use in horses approved by USDA.