.uk

.uk is a country code top-level domain managed by Nominet UK.

Registry facts

TLD	`.uk`
Type	Country Code
TLD manager	Nominet UK
IANA status	Active
Script	Latn
RDAP server	`https://rdap.nominet.uk/uk/`
IANA record	iana.org/domains/root/db/uk

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.

91.uk domains measuredof 9,971 in the sample

5.5%signed with DNSSEC

80.2%enforce DMARC

67.1%send HSTSof those answering on HTTPS

.uk domains compared with the whole sample

Accent bars: 91 .uk domains. Grey bars: all 9,971 measured domains.

DNSSEC signed 5.5%

all measured 10.6%

SPF record 91.2%

all measured 75.7%

DMARC record 89.0%

all measured 68.0%

DMARC enforced 80.2%

all measured 50.9%

CAA record 20.9%

all measured 20.7%

MTA-STS 23.1%

all measured 3.0%

TLS 1.3 82.9%

all measured 84.9%

HSTS 67.1%

all measured 56.4%

DNS providers

Amazon Route 53 26.4%

Cloudflare DNS 14.3%

Akamai Edge DNS 5.5%

Google Cloud DNS 2.2%

IBM NS1 Connect 2.2%

UltraDNS (DigiCert) 2.2%

Email providers

Microsoft 365 (Exchange Online) 31.9%

Google Workspace 19.8%

Proofpoint 12.1%

Trend Micro Email Security 2.2%

Mimecast 2.2%

Broadcom Email Security.cloud (MessageLabs) 1.1%

Certificate authorities

Let's Encrypt 22.0%

Amazon Trust Services 16.5%

DigiCert 15.4%

Sectigo 13.2%

Google Trust Services 11.0%

GlobalSign 8.8%

Popular .uk domains in the sample

bbc.co.ukwww.gov.ukamazon.co.uktelegraph.co.ukservice.gov.ukdailymail.co.ukindependent.co.ukgoogle.co.ukebay.co.ukox.ac.ukrightmove.co.ukargos.co.uk

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

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.