TLD Lookup

The last label of a domain name, the part after the final dot. Every one of them is delegated by IANA and listed in the root zone, which is the file the internet's name system starts from.

There are far more than most people expect. Over twelve hundred generic endings were delegated after 2013, alongside the country codes that have been there since the eighties.

• Type an ending such as de, a whole domain such as example.co.uk, or a country such as Germany. All three find the same kind of answer.
• An ending matches from its start, and a country from the start of any word in its name. So de finds .de and .dev, and Denmark, but not Bangladesh.
• A country is also found under the name ISO 3166 gives it, so Czechia finds .cz and Cote d'Ivoire finds .ci. Accents can be left off: Turkiye and Türkiye both work.
• An ending in its own script works too: .рф and .中国 are matched against the punycode the root zone stores them under.
• With nothing typed the page shows the shape of the root zone: how many endings of each kind there are, and how many IANA still holds a record for that no domain can use.
• An exact ending brings up its delegation record: the registry, its WHOIS server, when it was delegated, its name servers and whether it is signed with DNSSEC.

• A country code says which country the ending was delegated for, not where a domain under it is used. .io, .tv and .me are sold worldwide.
• IANA names the sponsoring organisation rather than the country, so .ai reads "Government of Anguilla" there. The country names here come from the ISO 3166 assignment.
• That an ending exists says nothing about whether you can register under it. Several are delegated and closed to the public.
• Endings do get retired. .an went with the Netherlands Antilles, and .su outlived the Soviet Union. IANA keeps their records, so searching one says it was retired rather than that it never existed.