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→Services
===Services===
* [http://www.whoismind.com/ WhoisMind] uses the PSL to get the registered domain name out of inputted URLs.
* [http://ct-watch.tom-fitzhenry.me.uk/ Certificate Transparency Watch] uses the PSL to allow querying for all SSL certificate for domains, but not TLDs. For example, http://api.ct-watch.tom-fitzhenry.me.uk/domain/mozilla.org 200s, but http://api.ct-watch.tom-fitzhenry.me.uk/domain/org 404s .
===Programming Languages and Libraries===
* [http://godoc.org/code.google.com/p/go.net/publicsuffix The Go Language] uses the public suffix to determine whether or not Internet users can register domain names under the given domain.