How to Update Your Pet's Microchip Information: A Step by Step Guide

If your pet's microchip is registered but the registry still shows your old address or a phone number you closed out two carriers ago, update it now: log into the registry account, or find it with a universal microchip lookup tool if you don't remember which one you used, edit your contact details, and save. Confirm the change went through, either with an on screen message or a confirmation email. Most registries let you do this in under ten minutes once you know your chip number and which company holds the record.

Microchipping only works as a reunification tool if the database behind the chip is accurate. A shelter or veterinary clinic that scans a lost pet is reading a string of numbers, nothing else. That number is worthless without a current name, phone number, and address sitting behind it in a registry. A lot of pet owners register a chip once, at the breeder's or the shelter, and never touch the account again. Years later they move twice and switch phone carriers, and the chip is still pointing at an apartment they left years ago.

This guide walks through finding your pet's chip number, figuring out which registry to log into, updating the record correctly, and building a habit so the information stays current instead of going stale again.

Why an out of date registry defeats the purpose of microchipping

A microchip itself never expires. It is a passive device about the size of a grain of rice, implanted under the skin between the shoulder blades, and it does not run out of battery or stop working after a few years. The part that fails is almost always the paperwork behind it.

When someone finds a loose or injured pet, they typically bring it to a shelter, a veterinary clinic, or an animal control officer, who scans for a chip with a handheld reader. The scanner reads the identification number and nothing else: no name, no address, no phone number. Whoever is holding the reader then has to look that number up in whichever registry the chip's manufacturer uses. If the contact record attached to that number is your old landlord's address or a phone number you disconnected, the trail goes cold right there, and staff are left guessing.

This is also why registering the chip is not the same as maintaining it. A shelter or breeder registers a brand new chip at the time of adoption or sale, sometimes using their own contact information as a placeholder. If you adopted your dog three moves ago and never checked the account since, there is a real chance the registry still shows information from that first registration rather than anything current. For the fuller case on why microchipping matters in the first place, see our guide on the benefits of microchipping your pet.

Finding your pet's chip number and the right registry

Before you can update anything, you need two pieces of information: the microchip number, and the registry it is enrolled with.

Start with paperwork. The chip number is usually printed on adoption paperwork, a breeder's health record packet, or a receipt from the veterinary clinic that implanted it. Many vet clinics also list the number in your pet's medical chart, so a quick call to the front desk can save you from digging through drawers.

If the paperwork is gone, any vet clinic or shelter can scan your pet in a couple of minutes and read the number off their handheld scanner, usually for free or for a small walk in fee. Once you have the number, the registry is not always obvious from the digits alone. If you don't already know which company holds the record, a universal microchip lookup tool, such as the one hosted by the American Animal Hospital Association, will search multiple manufacturer databases at once and tell you where the pet is enrolled.

Occasionally a chip shows up as registered with the manufacturer's default recovery database rather than a full service registry like the ones listed above. If that happens, look for an option to transfer or register with a full account. It usually costs nothing and gives you a proper login instead of a manufacturer placeholder.

Step by step: updating your contact information

Once you know the chip number and the registry, updating the record follows roughly the same steps everywhere.

1. Log in to the registry's website using your microchip number, email, or an existing account password. Most sites have an account recovery option if you have forgotten your login and only remember the chip number.
2. Open the pet's profile and find the owner contact section.
3. Edit the phone number, home address, and email address. Add a second phone number or an emergency contact if the form allows it: a friend or relative who can be reached if you are traveling or unreachable.
4. Save the changes and look for a confirmation, either an on screen message or a follow up email. If nothing confirms within a few minutes, log back in and check that the edit actually saved.
5. If the registry charges for updates or for continued lifetime enrollment, pay what is owed before you close the account. A record that reverts to a free tier with limited visibility is still better than no record at all, but check what you are losing before you decline the payment.

If you have registered the pet's details with United Pet Club as part of a broader health and identification record, update that entry too. Keeping one place current is only useful if every place that could be checked shows the same information.

Keep it current: a simple annual habit

The easiest way to avoid ever facing this problem again is to check the registry on a schedule instead of waiting for a move or a lost pet scare to remind you.

Pick a date you already associate with your pet, a birthday, an adoption anniversary, or the same week as an annual vet visit, and treat it as a five minute checkup for the microchip account alongside everything else. Confirm the phone number still rings, the address is current, and the email still gets checked.

Pair the chip with a visible ID tag on the collar too. A tag with a current phone number lets a neighbor who finds your dog in the yard call you directly, without a trip to the vet for a scan. The two systems work well together: the tag handles the fast, low effort recovery, and the chip is the permanent backup if the collar comes off. For more on building good habits like this into pet ownership from day one, see our guide for new pet owners.

None of this takes long, and it only matters on the one day you actually need it. That is exactly why it is worth doing now, while nothing is wrong, rather than after a call from a shelter three states away.