Why Can’t I Find a Microchip in Any Database?

A “not found” result does not always mean a pet’s microchip was never registered. There are several reasons why a working chip might not show up in an online search.

You might have entered the number incorrectly. The record could also be in another country, stored in a private registry, or missing from the lookup service you used.

This guide covers the most common reasons and explains what you can do next.

In this guide:

First, check the microchip number

Even a single wrong digit can change the result completely.

Before searching again:

• Check that every digit was copied correctly
• Remove spaces, dashes, and other punctuation
• Confirm whether the chip has 9, 10 or 15 digits
• Ask for another scan if the number was handwritten or difficult to read

Don’t try to guess a missing digit. Instead, ask a vet, shelter, or rescue group to scan the animal again.

The chip may be registered in a different database

No single database covers all pet microchips worldwide.

Different countries use national registries, private registries, manufacturer databases and shared lookup services. A chip may be registered correctly but still not appear in the first database you check.

Some lookup tools only search participating registries. Others may tell you which company supplied the chip without confirming whether owner details are available.

That’s why it helps to search more than one database instead of relying on just one.

The registry may not be publicly searchable

Some databases allow anyone to check a chip number. Others are available only to vets, shelters, police, authorised rescuers or registry staff.

So, a public search might not show anything, even if a private record does exist.

In these situations, you might need to contact the registry yourself or ask a vet or shelter to help with the enquiry.

The registration may be very recent

New registrations might not show up right away.

The vet, breeder, shelter, or rescue may have sent in the details, but the registry could still be processing them.

When a chip was implanted or transferred recently, ask:

• Which registry was used
• When the details were submitted
• Whether the registration was confirmed
• Whether any further action is needed from the owner

Don’t assume the chip was registered when it was implanted. These are two separate steps.

The chip may never have been registered

A microchip can function properly even if it isn’t linked to an owner.

This may happen when:

• The registration form was never completed
• The fee was not paid
• The vet or breeder expected the owner to finish the process
• The owner believed registration happened automatically
• Paperwork was lost
• The chip was supplied in bulk to a rescue or clinic

AAHA notes that a pet’s chip is registered with a microchip company or registry, not simply with the vet who implanted it.

The pet may have moved to another country

A chip number might suggest one country, but the registration could be in another place.

This can happen when a pet:

• Was adopted abroad
• Moved with its owner
• Was imported by a rescue
• Was registered again after entering another country

The first three digits can give you a clue, but they don’t always show where the pet is actually registered now.

Some chips use country codes, while others use manufacturer codes that can be sold in different countries.

The registry may have closed or changed

Microchip companies and registries can close, merge, change names, or transfer records.

So, an old certificate might list a website or company that doesn’t exist anymore.

When this happens:

• Search the company name together with “microchip registry”
• Check whether another registry took over its records
• Contact the chip manufacturer or distributor
• Ask the vet or shelter that implanted the chip

When registries close, owners may not know where their records ended up. It’s a good idea to check any old paperwork you have.

The database may be temporarily unavailable

Sometimes the issue is just a technical glitch, not a permanent problem.

A registry may be:

• Offline
• Slow to respond
• Blocking automated searches
• Under maintenance
• Returning an incomplete result

If you need the information urgently, try again later or get in touch with the registry directly.

ChipTrace shows when a database could not be checked, so you can tell the difference between “not found” and “not searched.”

The chip may be linked to old or conflicting details

A chip might show up in more than one database after a move, adoption, transfer, or second registration. One record may be current while another still contains old details.

When several records appear:

• Contact the most recent registry first
• Check whether the owner’s details are current
• Ask whether older records can be updated or closed

Keep both records in mind until you know which one is correct.

The chip may only lead back to the manufacturer

If you can’t find a registry record, the chip number might still tell you who made, supplied, or distributed it.

That information can help trace:

• Which clinic or rescue bought the chip
• Which country or region received the batch
• Which registry was normally used
• Who implanted the chip

AAHA explains that when no participating registry contains a record, a lookup may instead return the manufacturer or distributor.

What should I do next?

Here’s what to do, step by step:

1. Check the number again. Make sure every digit is correct.
2. Search with ChipTrace. It checks connected registries and lookup services.
3. Review the databases checked. Note any that were unavailable or could not be searched automatically.
4. Use the manufacturer information. Contact the supplier when ChipTrace identifies one.
5. Contact the implanting organisation. Ask the vet, breeder, shelter or rescue whether they still have a record.
6. Try the likely national registry. Some registries require a direct inquiry.
7. Register or update the chip. Do this only when you have the authority to act for the animal.

Do not replace a working chip too quickly

If a registration is missing, it doesn’t mean you need to remove or replace the chip.

If the chip scans properly, you can usually register or update the existing number.

Before getting another chip implanted, ask a vet to scan the whole animal carefully to see if the first chip still works.

Check the microchip with ChipTrace

Type the number into ChipTrace to search all connected registries and lookup services.

When no registration is found, ChipTrace may still provide:

• The likely country
• The manufacturer or distributor
• The number range
• Databases that could not be checked automatically
• The next organisation to contact

Check a Microchip