Quick answer: use the AAHA Microchip Registry Lookup Tool to find which participating registry or registries may hold a pet’s microchip registration. The lookup does not reveal owner details and cannot register a pet or update contact information. Contact the listed registry directly to check or change the record.

Reviewed November 3, 2026. Method: this guide follows AAHA’s published lookup instructions and explains how to verify registration with the registry. Registry participation and lookup results can change.

1. Find the microchip number

1. Check adoption, microchip, or veterinary paperwork for the number. Keep the number with your pet’s records.
2. If you cannot find it, call a veterinary clinic or animal shelter and ask whether they can scan your pet and provide the number. AAHA says an animal hospital can scan a pet when the number is unknown.
3. Compare the scanned number with any paperwork to catch a transcription error. Do not guess missing digits.

2. Use AAHA’s lookup to identify registries

Open the AAHA lookup page and enter the 9-, 10-, or 15-digit microchip number without spaces or punctuation, as AAHA instructs. The tool checks participating pet recovery service registries and returns registry contact information when available.

A result is a route to follow up, not proof that your pet’s record is complete. AAHA may list more than one possible registry, and a number that has not been registered may return a manufacturer or distributor instead. Contact the first registry shown and continue down the list if it cannot find the record. If the search says a registry could not be checked, AAHA advises trying again later; you can also contact the listed registry directly.

3. Confirm the record with the registry

Ask the registry to confirm that the chip number is associated with your pet and that the contact details it holds are current. The AAHA lookup does not display that private owner information. Use the registry’s own official site or contact details from its result to sign in, register, or request an update.

• Confirm the pet’s microchip number and name are recorded correctly.
• Check the primary phone number, email, and address; update each directly with the registry when needed.
• Ask whether you can add another trusted contact and what information or verification the registry requires.
• Ask whether registration is complete, whether any fee or renewal applies, and how to keep a copy of the confirmation.
• Record the registry name, date checked, account or confirmation reference, and the next step if anything remains unresolved.

If the chip has no registration record

Ask the veterinary clinic or shelter that scanned the chip whether it can help verify the number and identify the chip source. Use the AAHA result to contact the potential registry or manufacturer and ask how to associate the chip with your pet. AAHA notes that it does not manage the registries, so registration and account questions must go to the relevant company.

Sources and limits

• AAHA: Microchip Registry Lookup Tool — describes number entry, participating registry results, privacy limits, and the distinction between lookup and registration or updating.
• AAHA: How to Update Microchip Details — explains how to locate a registry, what to do if the number is unavailable, and why contact details should be current.

This page is a U.S.-oriented lookup checklist, not a registry, registration service, or guarantee that every registry participates in AAHA’s search. The registry itself controls account access, fees, required documents, and updates; confirm those details with it. The lookup does not provide GPS tracking or owner contact details. To organize current clinic and registry charges separately, use the microchip service quote organizer. For other adoption handoff records, see the adoption checklist; for local licensing questions, see the official pet license lookup guide.