longest/match

Terms of use

Last updated 22 August 2026

This is a free service run by one person. Use it freely, within the limits below, and treat what it tells you as an informed estimate to be checked rather than a fact to act on.

Who provides this

This site is run by a private individual in the Netherlands. Contact: [email protected]. Using the site means accepting these terms.

What it does

It answers questions about IP addresses and networks: which network an address is in, who a block is registered to, roughly where it is, and whether public sources describe it as VPN, proxy, datacenter or previously reported space. It also publishes aggregate statistics about networks, operators, countries and VPN providers. There is a free JSON API that returns the same answers.

Accuracy, and its limits

This matters more than anything else on this page, so it comes first.

  • Location is an estimate for a block of addresses, published with an accuracy radius. It is not the location of a device or a person. A radius of a thousand kilometres means the answer is "somewhere in this country".
  • Registration is a registry fact, not a physical one. Who a block is registered to and where its space is used are different questions and frequently have different answers.
  • Reputation entries describe an address block at a point in time. Addresses are reassigned. A listing from months ago may say nothing about whoever holds the address now, which is why the date it was last confirmed is shown.
  • VPN, proxy and datacenter signals come from published lists that are incomplete and sometimes wrong. An address absent from every list is not proven to be residential.
  • The two scores are summaries of those signals, not verdicts. They indicate what public sources say. They do not establish that anyone did anything.

Nothing here should be the sole basis for blocking a person, refusing a transaction, or any other decision that affects someone. If a result matters, verify it.

If something is wrong

If an entry about your network or organisation is inaccurate, write to [email protected] saying which address block you control and what is wrong. Corrections are made where the underlying data allows. Much of the data comes from upstream sources, so some corrections have to be made with the source, and you will be told when that is the case.

Using it fairly

The service is rate limited per address, and higher limits are available with an API key. Please:

  • do not work around the rate limits, whether by rotating addresses, distributing requests or any other means
  • do not bulk-download the site in order to rebuild the underlying database, and do not resell access to it
  • do not use the service to try to identify, locate or track an individual person, household or street address, which the upstream data licences prohibit as well
  • do not use it to attack, overload or interfere with the service or anyone else

Access may be limited or blocked where use threatens the service's availability or breaches these terms. Keep an API key to yourself; it identifies your usage.

Availability

There is no uptime commitment. This is one person's machine. The service may be slow, interrupted, or changed, and features may be withdrawn. The API may change; where a change would break existing use, reasonable notice will be given where practical.

Liability

The service is provided free and without warranty of any kind, including that results are accurate, complete or current.

Liability is excluded so far as the law permits. It is not excluded, and is not intended to be excluded, for death or personal injury, for intent or deliberate recklessness, or in any other case where Dutch law does not permit exclusion. Nothing here affects any right you have as a consumer that cannot be limited by agreement.

Where the data comes from

This site is built on public and licensed datasets, and some carry conditions that are passed on to you.

This product includes GeoLite2 data created by MaxMind, available from maxmind.com. That licence forbids using the data to identify or locate a specific household, individual or street address, which is why the acceptable use section above says the same thing.

Other data comes from the regional internet registries, published network operator datasets, and openly published lists of VPN, proxy, datacenter and reported address ranges. Their terms are respected, including any restriction on redistribution. The site publishes counts, shares and named top entries, and never lists of individual addresses or ranges.

Changes to these terms

These terms may change. The date at the top shows when they last did. Continuing to use the service after a change means accepting it.

Law and jurisdiction

Dutch law applies. Disputes go to the competent court in the Netherlands. If you are a consumer, this does not remove your right to the protection of the mandatory law of the country you live in, or to bring proceedings where the law entitles you to.

Privacy

What this site records about your visits is set out on the privacy page.