What is .do?
A little context on Dominican Republic: the capital is Santo Domingo, the main language is Spanish, the currency is the Dominican peso (DOP) and the international dialing code is +1.
Dominican Republic shares land borders with 1 country, so the ccTLDs next door are .ht (Haiti).
IANA lists Pontificia Universidad Catolica Madre y Maestra, Recinto Santo Tomas de Aquino as the manager of .do, with an address in Dominican Republic. The registry's website is http://www.nic.do. 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, .do is served by 7 authoritative name servers, every one of them reachable over IPv6. There is no DS record for .do in the root zone, which means the TLD is not DNSSEC-signed at the top level. Registration data is published over WHOIS (the WHOIS server is whois.nic.do).
.do FAQ
What country is .do?
.do is the country-code top-level domain for Dominican Republic, in Caribbean.
What is Dominican Republic's domain extension?
Dominican Republic's website extension is .do, its country-code top-level domain. "DO" is its ISO 3166-1 alpha-2 code.
Who owns the .do domain?
IANA lists Pontificia Universidad Catolica Madre y Maestra, Recinto Santo Tomas de Aquino as the manager of .do: it runs the registry and sets the rules for Dominican Republic's ccTLD. Individual .do names belong to whoever registers them.
Can I register a .do domain from the US?
It depends on Pontificia Universidad Catolica Madre y Maestra, Recinto Santo Tomas de Aquino'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.do) or an accredited registrar before you buy.
Is .do DNSSEC-signed?
No. As of our last data refresh there is no DS record for .do in the root zone.
How do I look up who owns a .do domain?
Query the registry's registration data service: the WHOIS server is whois.nic.do. Many registrants use privacy services, so personal details may be hidden.
Sources
Data from IANA root zone version 2026102000. Last changed August 21, 2025. Spotted something wrong? Tell us.
