Check a pet microchip number — worldwide, in one search

Updated: Nov. 3, 2026 · Kynologic Sp. z o.o.

Enter the 15-digit microchip number of a dog or cat in the box above. One search checks our own private registry and connected partner registries abroad — free, with no account needed.

How the microchip lookup works

One number, one click. We first check whether the animal is registered in DogWorldBase. At the same time we query the partner registries we are connected to — their answer arrives within seconds. You end up with one of two results: the number is registered (and we tell you where), or there is no match.

1. Get the chip number — from the pet passport, the vaccination booklet, the vet's sticker, or a scanner at a clinic or shelter.
2. Type it into the search box. Spaces and dashes are fine.
3. Read the result. If the animal is in our registry, you can message the owner straight away — anonymously.

We do not store the number in readable form and we never display it to anyone. The lookup is for checking, not for publishing. The same search box is on the home page.

What exactly we search

The lookup does not reach “every database in the world”. It checks three things, in this order:

1. The DogWorldBase registry — our own private registry, run by Kynologic Sp. z o.o.. If the animal is with us, you see it straight away together with a “Contact the owner” button.
2. Registries connected through a technical partner — the number is sent automatically to the pet registries our partner connects us to. These are mainly registries in the UK, South Africa, Australia and part of Europe (including SAFE-ANIMAL in Poland). When the number is not found anywhere, the result says how many connected registries were checked.
3. Links for a manual check — databases we do not search automatically: Centralna Baza Zwierząt (Poland), petMAXX and Europetnet (Europe) and AAHA Universal Lookup (USA). We list them under the result, some with a button to copy the number.

DogWorldBase is not a government register and has no access to databases not listed here.

What a pet microchip number looks like

Modern pet microchips follow the ISO 11784/11785 standard. The number has 15 digits and is usually written as one string, for example 985 112 004 318 207 (an example, not a real chip). The first three digits tell you where the chip comes from:

• a country code under ISO 3166-1 — for example 616 is Poland, 276 is Germany;
• a manufacturer code in the 900–999 range — for example 985, 981 or 900 (a code shared by several manufacturers).

Neither code tells you where the chip is registered. A chip implanted in one country can be recorded in a database in another, and vice versa — which is why the lookup asks several sources at once. Older chips may have 9 or 10 characters; our lookup handles the 15-digit standard. Read more in Where to find a pet's microchip number.

The number is registered — what next

You will see which registry holds the number. The owner's details are never shown — that is how every serious registry works, and how we work.

• The animal is in DogWorldBase. Click "Contact the owner". Your message reaches them immediately by e-mail. You do not see their details and they do not see yours until you both decide otherwise. If the owner has reported the animal lost, you will see that right next to the result.
• The animal is in a partner registry. We show the registry's name, country, website and — where we have it — a helpline. Contact that registry; they will notify the owner.

Found a dog and not sure where to start? Read Found a dog or cat? What to do, step by step.

No result — what it means and what to do

No result does not mean the animal has no owner. It only means the number is not in our registry or in the databases we query automatically. The reasons are usually mundane:

• the number was mistyped — compare the digits with the document or the scanner and try again;
• the chip was implanted but nobody registered it — this happens more often than you would think;
• the animal is recorded in a registry we do not yet search automatically.

What to do:

1. Check the number by hand in the national pet registries of your country — and, if the first digits point to another country, there too. Below the result we list links to further databases, with the number ready to copy.
2. If you have found the animal, report it to a vet clinic, a shelter or the local animal warden. A vet can scan the chip again and rule out a misread digit.
3. If it is your own dog or cat, register the chip. Without a database entry the number leads nowhere.

Privacy: the owner's details stay with the registry

The lookup never shows an owner's name, address or phone number. Contact always goes through the registry: with us, via an anonymous message; with partners, via their staff. The chip number therefore never becomes a key to someone else's personal data, and the owner decides whom to answer. Neither the chip number nor any owner details appear in the page address or in content that search engines can index.

Who can check a chip for free

Everyone. A finder, a vet, a shelter, an animal warden, a breeder or someone checking a dog before buying it — nobody pays and nobody needs an account. Clinics, shelters and public bodies can also join the partner programme and register animals at no charge.

Chipped but not registered? Register your dog or cat

Registration in DogWorldBase is a one-time payment, with no subscription, for the animal's whole life. The entry includes a finder's page, anonymous chat, a lost mode with alerts to partners, and transfer to a new owner. Register your dog, or pick a QR tag for the collar in the shop — for finders who have no scanner but do have a phone.

More answers: Pet microchip FAQ · Is my dog's microchip registered? · Lost a dog or cat? What to do now.

See also: Found a Dog? Microchip Lookup & What to Do Next · Lost Dog or Cat: What to Do in the First 24 Hours · Pet Microchip FAQ: Numbers, Registration, Lookup · Is My Dog’s Microchip Registered? How to Check · Where to Find a Pet's Microchip Number (15 Digits)