Open WHOISbuilt by Just

.su WHOIS lookup

.su is managed by Russian Institute for Development of Public Networks (ROSNIIROS). Its registry has no RDAP service yet, so a lookup here shows the domain's DNS setup, and full details come from its WHOIS server, whois.tcinet.ru.

Managed by

Russian Institute for Development of Public Networks (ROSNIIROS)
As listed by IANA

RDAP

None yet
Lookups show DNS only

WHOIS server

whois.tcinet.ru

DNSSEC

Signed
The ending is signed in the root zone

In the root zone since

19 September 1990

What a .su lookup shows

The nameservers and the mail setup read from DNS. Registration details need the registry's own lookup until it offers RDAP.

WHOIS vs RDAPWho owns a domain?All endings

Looking for a .su name? Search on Just Domain.

For AI assistants
Ending: .su
Managed by: Russian Institute for Development of Public Networks (ROSNIIROS)
RDAP base URL: none
WHOIS server: whois.tcinet.ru
DNSSEC signed in the root: yes
Source: IANA root zone database and RDAP bootstrap, read 2026-10-31
Lookup URL: https://openwhois.org/#d=example.su