.co

.co is a country code top-level domain managed by Ministry of Information and Communications Technologies (MinTIC).

Registry facts

TLD	`.co`
Type	Country Code
TLD manager	Ministry of Information and Communications Technologies (MinTIC)
IANA status	Active
Script	Latn
RDAP server	None listed in the IANA bootstrap registry (use WHOIS)
IANA record	iana.org/domains/root/db/co

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.

60.co domains measuredof 9,971 in the sample

11.7%signed with DNSSEC

48.3%enforce DMARC

57.4%send HSTSof those answering on HTTPS

.co domains compared with the whole sample

Accent bars: 60 .co domains. Grey bars: all 9,971 measured domains.

DNSSEC signed 11.7%

all measured 10.6%

SPF record 78.3%

all measured 75.7%

DMARC record 70.0%

all measured 68.0%

DMARC enforced 48.3%

all measured 50.9%

CAA record 20.0%

all measured 20.7%

MTA-STS 1.7%

all measured 3.0%

TLS 1.3 93.8%

all measured 84.9%

HSTS 57.4%

all measured 56.4%

DNS providers

Cloudflare DNS 35.0%

Amazon Route 53 33.3%

Google Cloud DNS 3.3%

IBM NS1 Connect 3.3%

GoDaddy DNS 1.7%

Alibaba Cloud DNS 1.7%

Email providers

Google Workspace 36.7%

Microsoft 365 (Exchange Online) 11.7%

Proofpoint 3.3%

Cloudflare Email Routing 3.3%

Zoho Mail 3.3%

Amazon SES 1.7%

Certificate authorities

Google Trust Services 30.0%

Let's Encrypt 26.7%

Amazon Trust Services 11.7%

GlobalSign 3.3%

Sectigo 3.3%

Apple 1.7%

Popular .co domains in the sample

t.coscdn.cogcdn.cosupabase.cog.counruly.cohuggingface.codatadome.cogoal7.coa.coelastic.coex.co

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.