02/17/2026
Major Pet Microchip Companies & Registries:
24Petwatch: One of the largest registries in North America that accepts all microchip brands for free or paid registration.
AKC Reunite: Operated by the American Kennel Club; provides ISO-compliant microchips and a lifetime recovery service for a one-time fee.
HomeAgain: A major manufacturer and registry that offers premium recovery services and is used by many veterinary clinics.
AVID FriendChip: One of the longest-operating systems, using its proprietary PETtrac Pet Recovery Network.
PetLink (Datamars): A global registry focused on ISO-standard chips with a lifetime registration model.
Michelson Found Animals: Offers a popular free microchip registry intended to be accessible to all pet owners.
PetKey: A nationwide recovery database that also provides lost pet alerts.
SmartTag: Provides microchips and a registry with 24/7 emergency support.
Fi Nano: Known for its free-to-register slim microchips, often used by breeders and rescues.
BuddyID: A registry that gained attention for offering free transitions to pet owners after other companies ceased operations.
Peeva: Integrates medical records with microchip identification for a more comprehensive pet health profile.
Important Notes
Verification Tool: If you are unsure which company your pet's chip belongs to, use the AAHA Universal Pet Microchip Lookup to identify the manufacturer or participating registry.
https://www.aaha.org/for-veterinary-professionals/microchip-registry-lookup-tool-aaha-find-your-pets-microchip-registry/
Closed Companies: Save This Life recently ceased operations; pet owners previously registered with them are urged to re-register with a new provider to ensure their pet can still be identified.
Use AAHAโs free microchip registry lookup tool to enter a 9-,10- or 15-digit pet microchip number and find which registry holds the record.