.si

.si is a country code top-level domain managed by Academic and Research Network of Slovenia (ARNES).

Registry facts

TLD	`.si`
Type	Country Code
TLD manager	Academic and Research Network of Slovenia (ARNES)
IANA status	Active
Script	Latn
RDAP server	`https://rdap.register.si/`
IANA record	iana.org/domains/root/db/si

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.

5.si domains measuredof 9,971 in the sample

0.0%signed with DNSSEC

40.0%enforce DMARC

0.0%send HSTSof those answering on HTTPS

.si domains compared with the whole sample

Accent bars: 5 .si 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 80.0%

all measured 75.7%

DMARC record 80.0%

all measured 68.0%

DMARC enforced 40.0%

all measured 50.9%

CAA record 20.0%

all measured 20.7%

MTA-STS 0.0%

all measured 3.0%

TLS 1.3 100.0%

all measured 84.9%

HSTS 0.0%

all measured 56.4%

DNS providers

ClouDNS 20.0%

Cloudflare DNS 20.0%

Email providers

Google Workspace 20.0%

Microsoft 365 (Exchange Online) 20.0%

Certificate authorities

Google Trust Services 40.0%

DigiCert 20.0%

Let's Encrypt 20.0%

Popular .si domains in the sample

rtvslo.sinyaa.sigoogle.siuni-lj.sibombuj.si

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.