How do I update my pet’s microchip contact details?

Which record are you actually changing?

AAHA explains that the implanted chip carries an identification number; the associated contact information is held by a registry. It is not a GPS tracker. Collar identification complements the chip rather than being replaced by it.

Think of the task as finding the right destination for an update. A clinic may have your new phone number for appointment calls while a separate registry still has the old one. An accurate note in your own files cannot make that other record current.

The table below is PetCheck’s organizational worksheet. It separates actions that are easy to confuse; it is not a registration form and does not send any information.

Sources: AAHA: Pet Microchipping FAQs (updated 2026)

Use a lookup to find the next contact

If you cannot find the number, AAHA advises asking a veterinarian to scan the pet. Its lookup tool searches participating registries, primarily for chips distributed in the United States. It points you toward a registry or, in some cases, a manufacturer; it does not expose the owner’s personal record or maintain a registry of its own.

Use the registry’s official process to make changes. Outside the US, check the appropriate registry and local requirements. The absence of a result in one lookup is not proof that there is no chip or no registration anywhere.

Keep a troublesome result specific: ‘No participating registry found for the number I entered’ is different from ‘my pet is not chipped.’ Recheck transcription, retain the paperwork you do have, and ask the clinic or recovery service what to do next. Do not create an invented number to get through a form.

Sources: AAHA: Universal Pet Microchip Lookup FAQs

Finish with confirmation, not just an open form

AAHA recommends updating registry information when you adopt, move, or change telephone or email details. An adoption may require the registry’s own transfer process. Ask that service about its requirements rather than assuming possession of a chip number lets you change any record.

Our suggested workflow is to compare the submitted information with the saved account view or confirmation. Check that the record is for the intended pet, not another animal in the household. If an alternate contact is included, agree with that person on which number to use and their role.

Record an unresolved step honestly. ‘Transfer request submitted’ is useful; ‘all updated’ is misleading if the service is still processing it. Keep passwords and verification codes out of shared care notes.

• I matched the pet and exact chip number.
• I checked the saved registry information or confirmation.
• I noted any pending transfer or missing information.
• I checked other contact records separately.

Sources: AAHA: How to Update Microchip Details (2025) · AAHA: Pet Microchipping FAQs (updated 2026)

One move, two pets, three unfinished tasks

Fictional example: Maya moves with dog Juniper and cat Moss. The new clinic updates both patient files. At home she discovers that Juniper’s registry still shows her previous phone number, while Moss’s adoption transfer is pending. Nothing in this example is an actual registration record.

Maya gives each task its own status. After saving Juniper’s new number, she keeps the registry confirmation. For Moss, she records the transfer reference and the service’s stated follow-up instruction. She checks the collar contact information separately.

The useful outcome is not a single tick beside ‘pets.’ It is a visible distinction between completed work and the item that still needs attention. No chip numbers, addresses or real phone numbers are needed in this teaching example.

Keep a small note you can act on later

A helpful note could say: ‘Registry checked today; confirmation kept with adoption paperwork; transfer still pending for Moss.’ Add the next action and the date you intend to check it. Choose a calendar reminder yourself if one would help.

My Pet Notes can hold your own dated note. It stores care notes in this browser and offers a manual backup; it does not update a registry, monitor a transfer, locate a missing pet or send a reminder. Keep a separate accessible copy of important identification records.

Before a sitter takes over, make sure their emergency contact sheet uses the current numbers too. This is a separate handoff, not another registry update. Review what you share and avoid including account credentials.