.sina
.sina is a brand extension, run by Sina Corporation since 2016. Only Sina Corporation, its affiliates and trademark licensees can register .sina names; they are not for sale to the public.
| Type | Brand |
|---|---|
| Registry operator | Sina Corporation |
| Who can register | Brand owner only Brand extension: only the registry operator, its affiliates and trademark licensees register names. |
| In the root zone since | 30 March 2016 |
| DNSSEC | Signed |
| RDAP server | https://rdap.ngtld.cn/ |
| WHOIS server | whois.nic.sina |
| IANA record | iana.org/domains/root/db/sina |
Look up a .sina domain
The .sina registry publishes registration data over RDAP. The free domain report reads it and shows a .sina domain's registrar, dates, status and DNS in one place. For the raw record, use the WHOIS lookup.
More extensions from Sina Corporation
| Generic · 2016 | |
| .微博 | Brand · 2016 |
New to extensions? The guide to how domain extensions work covers generic, country-code and brand extensions. For who sells extensions in general, see the list of domain registrars.
Sources: the IANA root zone database and the ICANN list of generic extensions (refreshed 2026-10-24). Something out of date? Tell us.
Frequently asked questions
Who runs the .sina extension?
Sina Corporation is the registry operator for .sina. The registry keeps the list of every .sina name; registrars sell the names to the public.
Can anyone register a .sina domain?
Only Sina Corporation, its affiliates and trademark licensees can register .sina names; they are not for sale to the public.
When was .sina created?
.sina was added to the DNS root zone on 30 March 2016, according to IANA.
How do I look up who owns a .sina domain?
The .sina registry publishes registration data over RDAP at https://rdap.ngtld.cn/ and over WHOIS at whois.nic.sina. The free domain report on lemon.domains reads it for you and shows the registrar, dates and status.
Is .sina signed with DNSSEC?
Yes. The .sina zone is signed, so a .sina domain can turn on DNSSEC once its registrar adds a DS record.