Registry Lookup Status

How this is measured

mChip.org does not monitor other registries, and has no access to their systems. Every figure on this page comes from the AAHA Universal Pet Microchip Lookup Tool — the public search that veterinary clinics and shelters use to find which registry holds a microchip. When that tool cannot reach one of the participating registries, it says so and reports the rest. We record which registries it named, and when.

What each percentage is

For each day, we count the searches we observed, and the searches in which a given registry was reported unavailable. The percentage is the second divided by the first.

A day is published only once we have observed enough searches on it for the figure to mean something. Below that point a single observation would be worth more than the threshold below, so one stray reading could put a registry on this page by itself; those days are shown as “not enough observations” rather than as a number. Days on which we observed nothing are shown the same way.

A registry is listed only if it was unavailable on more than 1% of a published day's searches, on at least one day in the window. That figure is not one we chose: taking part in the lookup tool requires a registry to be reachable by it at least 99% of the time, so everything listed here sits below a level the programme itself sets.

That threshold is the only filter applied. No registry is excluded by name — mChip.org is measured by the same method and appears here on the same terms if it crosses it.

What it is not

• This is a sample, not continuous monitoring. The searches are real lookups performed for other purposes, not scheduled checks. They are not evenly spaced through the day, do not run around the clock, and come from one part of the world. A quiet day here is not evidence that a registry was available all day.
• A registry named here may have been working normally. What we observe is that the lookup tool could not reach it. That can happen because of the registry, the lookup tool, or the network between them, and we cannot tell those apart from the outside — “unavailable” here means unavailable to the tool, not that the registry itself was down.
• “Unavailable” is not “no match found”. A registry that responded and reported no record for a chip is not counted here. Only searches where the tool reported it could not reach the registry are.
• An outlined cell is not a zero. It means we did not observe enough searches that day to publish a figure, so nothing is claimed about that registry on that day either way. Those days are excluded from the day counts.

This page is published by mChip.org. The American Animal Hospital Association neither produced nor endorses it, and was not involved in preparing it.

mChip.org is a Participating Pet Recovery Service Registry in the AAHA Universal Pet Microchip Lookup Tool. AAHA provides an internet- based application that enables veterinarians, humane organizations, pet owners or other persons to search various Pet Recovery Service registries and identify those registries on which a particular microchip is registered. AAHA is not affiliated or involved with any specific microchip registry and has no relationship, financial or otherwise, with this Participating Pet Recovery Service Registry ("Registry"). This Registry has given AAHA permission to search the Registry's database in order to assist pet owners in being reunited with their pets. AAHA does not maintain a database of microchips of its own. It only links to registries such as this one. The AAHA Universal Microchip Lookup Tool only searches the databases of companies that elect to participate in the program.