Microchip Search | AAHA Universal Pet Microchip Lookup. The AAHA Universal Pet Microchip Lookup site searches many of the leading pet microchip registries to aid in pet recovery by showing the user which registries have microchip registrations for a particular microchip ID. Additionally, the Pet Microchip Lookup tool will attempt to determine the microchip distributor or microchip manufacturer if no microchip registration can be found. This allows the user to attempt to discover where a pet chip was implanted to aid in the safe return of a pet with an un-registered microchip.