.ua is the Internet country code top-level domain (ccTLD) for Ukraine. To register at the second-level (example) domainname.ua, possession of the exact trademark (matching the domain name) is required. It is not required for third-level domains (.com.ua, .net.ua, etc.).

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Quick Facts Introduced, TLD type ...

.ua

Introduced	December 1, 1992 (1992-12-01)
TLD type	Country code top-level domain
Status	Active
Registry	Hostmaster Ltd.
Intended use	Entities connected with Ukraine
Actual use	Popular in Ukraine
Registered domains	549,180 (Jan 2021)[1]
Registration restrictions	Must be the owner of a trade mark registered in Ukraine for second-level domains (and may only register if the domain name is the same as the trade mark); no restrictions for third-level domains
Documents	Policy documents
Dispute policies	Domain dispute resolution policy
DNSSEC	Yes
Registry website	Hostmaster

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• 1 December 1992: Registered in root zone
• 13 April 2012: DNSSEC enabled in root zone
• 26 February 2022: Domain servers transferred out of Kyiv for continuity reasons amid the 2022 Russian invasion of Ukraine^[2]

As of March 2017, around 10.78% of all the .ua domains were served via secured HTTPS protocol, with the Let's Encrypt Authority X3 being the most popular SSL certificate.^[3] Nginx is the most popular web server, serving 68.97% of the .ua domains, followed by Apache serving 17.75% of the total .ua domains.^[3]

To remove the risk of cyber squatting, registration of second-level domains directly below .ua is restricted to owners of registered trade marks, who may register a domain name similar to that of the trade mark in question. However, third-level domains can be registered beneath some of the following:

• .com.ua: paid, commercial organizations
• .edu.ua: free, available only to proved educational organisations.
• .gov.ua: free, available only to governmental organizations
• .net.ua: paid, network service providers
• .in.ua: paid, domains for individuals
• .org.ua: paid, other organizations (non-commercial)
• .mil.ua: free, available only to armed forces

There are also second-level domains which are region-specific. These are less popular than the above list (making domain names more available) but they are sometimes restricted to organisations exclusively from within the region.

• .cherkasy.ua, .cherkassy.ua (ck.ua): Cherkasy Oblast
• .chernihiv.ua, .chernigov.ua (.cn.ua): Chernihiv Oblast
• .chernivtsi.ua, .chernovtsy.ua (cv.ua): Chernivtsi Oblast
• .yalta.ua, .crimea.ua: Yalta, Crimea
• .dnipropetrovsk.ua, .dnepropetrovsk.ua (.dp.ua): Dnipropetrovsk Oblast
• .donetsk.ua (.dn.ua): Donetsk Oblast
• .ivano-frankivsk.ua (.if.ua): Ivano-Frankivsk Oblast
• .kharkiv.ua, .kharkov.ua (.kh.ua): Kharkiv Oblast
• .kherson.ua (.ks.ua): Kherson Oblast^[4]
• .khmelnitskiy.ua (.km.ua): Khmelnytskyi Oblast
• .kropyvnytskyi.ua, .kirovograd.ua (.kr.ua): Kirovohrad Oblast
• .kyiv.ua, .kiev.ua: Kyiv
• .lugansk.ua (.lg.ua): Luhansk Oblast
• .lutsk.ua, .volyn.ua (.lt.ua): Lutsk, Volyn Oblast
• .lviv.ua: Lviv Oblast
• .mykolaiv.ua, .nikolaev.ua (.mk.ua): Mykolaiv Oblast
• .odesa.ua, .odessa.ua (.od.ua): Odesa Oblast
• .poltava.ua (.pl.ua): Poltava Oblast
• .rivne.ua, .rovno.ua (.rv.ua): Rivne Oblast
• .sebastopol.ua: Sevastopol
• .sumy.ua (.sm.ua)- Sumy Oblast
• .ternopil.ua (.te.ua): Ternopil Oblast
• .uzhgorod.ua (.uz.ua): Uzhhorod
• .vinnytsia.ua, .vinnica.ua (.vn.ua): Vinnytsia Oblast
• .zaporizhzhe.ua (.zp.ua): Zaporizhzhia Oblast
• .zhitomir.ua (.zt.ua): Zhytomyr Oblast

• .укр, a second top domain for Ukraine, active from 2013, which has domains with Cyrillic characters.
• Internet in Ukraine