What is .ir?
A little context on Iran: the capital is Tehran, the main language is Persian (Farsi), the currency is the Iranian rial (IRR) and the international dialing code is +98.
Iran shares land borders with 7 countries, so the ccTLDs next door are .af (Afghanistan), .am (Armenia), .az (Azerbaijan), .iq (Iraq), .pk (Pakistan), .tr (Türkiye) and .tm (Turkmenistan).
IANA lists Institute for Research in Fundamental Sciences as the manager of .ir, with an address in Iran (Islamic Republic of). The registry's website is http://www.nic.ir. ccTLD managers set their own policies — who can register, which second-level names exist, pricing to registrars — so those rules differ from country to country.
On the technical side, .ir is served by 4 authoritative name servers, every one of them reachable over IPv6. It is also DNSSEC-signed: the root zone carries a DS record for .ir, which lets validating resolvers check its answers cryptographically. Registration data is published over WHOIS (the WHOIS server is whois.nic.ir).
Iran also has another country-code domain in the root zone: .ایران (Arabic).
.ir FAQ
What country is .ir?
.ir is the country-code top-level domain for Iran, in Southern Asia.
What is Iran's domain extension?
Iran's website extension is .ir, its country-code top-level domain. It also has .ایران in other scripts. "IR" is its ISO 3166-1 alpha-2 code.
Who owns the .ir domain?
IANA lists Institute for Research in Fundamental Sciences as the manager of .ir: it runs the registry and sets the rules for Iran's ccTLD. Individual .ir names belong to whoever registers them.
Can I register a .ir domain from the US?
It depends on Institute for Research in Fundamental Sciences's policy. Some ccTLDs are open to anyone in the world, while others require a local address, company or trademark. Check the registry (http://www.nic.ir) or an accredited registrar before you buy.
Is .ir DNSSEC-signed?
Yes. The root zone has a DS record for .ir, so DNSSEC validation works all the way down from the root.
How do I look up who owns a .ir domain?
Query the registry's registration data service: the WHOIS server is whois.nic.ir. Many registrants use privacy services, so personal details may be hidden.
Sources
Data from IANA root zone version 2026102000. Last changed May 14, 2026. Spotted something wrong? Tell us.
