.su

.su is a country code top-level domain managed by Russian Institute for Development of Public Networks (ROSNIIROS).

Registry facts

TLD	`.su`
Type	Country Code
TLD manager	Russian Institute for Development of Public Networks (ROSNIIROS)
IANA status	Active
Script	Latn
RDAP server	None listed in the IANA bootstrap registry (use WHOIS)
IANA record	iana.org/domains/root/db/su

IANA data: TLD list Version 2026111000, Last Updated Tue Nov 10 07:07:01 2026 UTC; RDAP bootstrap published 2026-10-28; Root Zone Database fetched 2026-11-11.

3.su domains measuredof 9,971 in the sample

0.0%signed with DNSSEC

0.0%enforce DMARC

n/asend HSTSof those answering on HTTPS

.su domains compared with the whole sample

Accent bars: 3 .su domains. Grey bars: all 9,971 measured domains. Fewer than 50 domains: treat these percentages as rough.

DNSSEC signed 0.0%

all measured 10.6%

SPF record 0.0%

all measured 75.7%

DMARC record 0.0%

all measured 68.0%

DMARC enforced 0.0%

all measured 50.9%

CAA record 0.0%

all measured 20.7%

MTA-STS 0.0%

all measured 3.0%

all measured 84.9%

all measured 56.4%

DNS providers

RU-CENTER (nic.ru) 66.7%

Cloudflare DNS 33.3%

Popular .su domains in the sample

hikvision-cctv.sunvms9000.suvaseline.su

Check one yourself:

WHOIS lookup Inspect DNSSEC Check SSL certificate

Other TLDs in the sample

.com · 5078 .net · 785 .org · 434 .ru · 291 .io · 206 .jp · 202 .de · 181 .edu · 125 .gov · 114 .in · 107

All TLDs

Source: our own scan of November 2026 (2026-11-11), 9,971 of the top 10,000 domains of the Tranco list Y895G that answered in DNS. Method and data.