Frequently asked questions - animal shelter

How do I register a microchip/transponder quick and easy?
You can register through our website, but also directly with management software such as Animana, Vetware, DAISY and VetBase (more software to follow). After registration, the details are immediately accessible through our website.
Does a pet need a microchip number with the Dutch country code (528) for international traffic?
No, not all animals have this obligation. The obligation for 528 numbers applies to dogs and horses.
As an animal shelter, we want to register microchip numbers with PetBase. How does this work?
This is possible, and it is even cost-reducing by first registering the animal in the shelter’s name. After a few weeks you can still hand over the registration details to the new owner and, at no costs, change the new owner’s details online. Are you an animal shelter but not yet a reporting institution? Order a free starter pack!
How is a chip/transponder number composed?
In the United States, among others, the FDX-A microchip number is often used. An FDX-A chip number has a 10-digit code and mostly consists of 9 numbers and 1 letter. In Europe, the FDX-B chip numbers are always used for pets. These chip numbers are composed in a fixed manner – they always consist of 15 numbers. The first three numbers are either a manufacturer’s or country code. Manufacturer’s codes always begin with a 9, e.g. 945 for FiveStar transponders. A transponder number that begins with 999 is a test number which doesn’t have to be unique. If the number starts with a country code, the numbers in 4th, 5th and 6th position also have a fixed meaning. A number 0 on the 4th position means it is a test number and doesn’t have to be unique. A number beginning with 5281400 is a number from the Dutch ‘Raad van Beheer’ (Management Board). When there is a 2 in the 4th position, the numbers in 5th and 6th position are a derivative of the manufacturer’s code. This can be calculated by deducing the derivative number from 991. So, a number that starts with 5282460 is a chip number from the Netherlands (528) with a manufacturer code (2) of 945 (991 - 46 = 945). The last 8 numbers make the number unique. They are serial numbers which are not packaged in sequence. A box of chip numbers therefore seldom contains two sequential numbers.
What are the standards 11784 and 11785?
The ISO-standards 11784/85 together form the standard for electronic animal identification. ISO 11784 determines the number structure (15-digits, the first 3 are a manufacturer’s or country code). ISO 11785 describes the technical concept of the microchips. All chips sold by PetBase/Micpoint BV comply with these standards.
I entered the wrong microchip number, what now?
If you entered the wrong chip number, it cannot be changed just like that. The easiest solution is to fill in the contact form, including the microchip number and registration number, and clearly state the wrong and correct number. We will then take care of a correct registration.
What does the option "do not use for reunification" mean?
Dogs born or imported after April 1st 2013 must be registered in a government-approved database. Also, all changes in the dog’s details must be recorded. As a database provider, we must offer the owner the opportunity to meet this obligation, without using the database’s function (reuniting a missing animal with its owner). If you indicate that the registration of a dog is not to be used for reunification, we cannot release any details of the owner once a missing dog has been found. In that case, the dog goes to an animal shelter and, after a fixed period, becomes eligible for relocation. Seeing that the databases mainly exist to reunite missing animals with their owners, we advise you to DO make use of the reunification possibility. Therefore, it is preferred to leave the tick box alone. Only use it if a new owner insists on not using the option and is well aware of the possible consequences. If an owner does not want to show his/her details in the public section, it is better to use the option "reporting institution only". In that case, a found animal can still be traced back to an owner through you or us. Also, try to explain to the owner that "public" means that his/her details can only be retrieved by someone who knows the 15-digit microchip number. We advise people to always choose for a full release of details (reporting institution + owner’s details) for a fast and simple reunification of a missing animal with its owner.
Our shelter has obtained an animal whose owner decided to part with it; how do we register the animal in our name?
A registration is never simply removed from our database, partly because there are reference links to our database via EPN, Petmaxx and SDGN (´Combined Pet Databases Netherlands´) using the microchip number. A form number is always required to make changes. This form number can be easily requested by the registered owner. How this works is explained in this FAQ-section under Owner. The registration-/form-number can often also be retrieved from the reporting institution that is mentioned in the registration. For these details, click on Search chip number. Veterinarians and animal shelters can change the details on our website by using our registration forms. To enable this, animal shelters can order our starter pack. After that, new forms can be ordered in our webshop. We offer another possibility for animal shelters, under certain conditions. For this purpose, you need to register the animal again in another database. The database must be affiliated with SDGN. After a correct registration in the associate database, you can inform us of the database and microchip-/transponder number concerned. We will then create a reference link to the new registration so that the former owner’s details are no longer visible on our


Vlierweg 38A
3991 BD  Houten

International +31(0) 30 63 55 700

You can reach us on working days between 10.00-11.00 a.m. and 16.00-17.00 p.m.


PetBase is part of Europetnet, so that your pet can also be traced abroad.

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