Check-Host.cc

Domain

html.duckduckgo.com

Aggregated from public BGP, CT logs, our scan layer, honeypots and global probes.

Run a live full scan of html.duckduckgo.com

On-demand: ports, banners, TLS, tech-stack, subdomains and origin/IP-leak detection. Results are shared publicly for everyone to link to.

Deep-scan now
Hosting IPs
2
A/AAAA targets
Subdomains
CT + scan + body
Record Types
5
seen in DNS
Observed Certs
in our scans

DNS Records

A
40.114.177.156, 52.142.124.215
AAAA
MX
0 duckduckgo-com.mail.protection.outlook.com
NS
dns1.p05.nsone.net, dns2.p05.nsone.net, dns3.p05.nsone.net, dns4.p05.nsone.net, ns01.quack-dns.com, ns02.quack-dns.com, ns03.quack-dns.com, ns04.quack-dns.com
TXT
MS=ms71454350, OSSRH-87525, ZOOM_verify_QSjXtfOfRHiY0O9gD5E4Ug, anthropic-domain-verification-c7d48c=mGBhXlQHsvOc64IFwZsaKKVoQ, apple-domain-verification=XeKEoqnRNUfkUc5l, bw=IOlfo6xQJX+xewM7+IiPqOSIPtLXKrWoS2RXCTPMmQZc, cursor-domain-verification-nxwg1m=QRyFwelq3dM8RzBmvRla2boHy, mistral-domain-verification=1b914b8749d84fc51987d1cd2b9f86b38617aa4d
CNAME
CAA
0 issue "digicert.com", 0 issue "letsencrypt.org"

WHOIS / Registration

Registration data planned

Registrar, creation/expiry dates and domain status via RDAP. Rolling out gradually — bulk WHOIS is rate-limited, so we resolve on a prioritized cadence.

Subdomains

Subdomain enumeration pending

Every subdomain ever issued a TLS cert under this apex — extracted from Certificate Transparency logs, our own scan observations and body references.

Tech Stack

Tech detection pending

Wappalyzer-rules detect CMS, frameworks, analytics, JS libs and server-side languages on this domain.

TLS Certificates

Certificate observations pending

TLS certs naming this domain in subject or SANs will appear here as our scan-layer catches them.

IPs Citing This Domain

Hosts whose HTML body references this domain. Strong signal for origin/mirror/embed discovery.

75.60.233.73:443 href · ×2
8.218.18.184:80 href · ×2
5.188.124.126:443 href · ×1
20.88.178.212:443 href · ×1
5.78.64.223:80 href · ×1
194.48.142.61:80 href · ×1
138.124.38.106:80 href · ×1

Origin / IP-Leak

USP

When a hostname is served behind a CDN (e.g. Cloudflare), the origin server can sometimes be identified by matching its TLS cert against the protected hostname. Findings shown here are heuristic candidates, not guarantees.

No origin-IP leaks detected (yet)

Either this domain doesn't sit behind a CDN, or we haven't seen a TLS cert from a non-CDN IP matching this hostname. Run a fullscan to refresh the cert→IP cross-reference.

Threat Intelligence

Domain threat-intel pending

Matches in URLhaus, OpenPhish, PhishTank, malware feeds, and Spamhaus DBL.

History

Passive DNS — every value this name ever resolved to and when we first / last observed it. Updates every cycle of our forward-DNS crawler.

Type Value First seen Last seen
A 40.114.177.156 2026-05-26 02:22:42.939 2026-05-26 10:18:18.345
TXT anthropic-domain-verification-c7d48c=mGBhXlQHsvOc64IFwZsaKKVoQ 2026-05-26 02:22:42.939 2026-07-19 09:04:56.405
TXT stripe-verification=e508f445dbb94b1ae51f7b48901897714b661f5298da43bb66b224973c8290d4 2026-05-26 02:22:42.939 2026-07-19 09:04:56.405
TXT OSSRH-87525 2026-05-26 02:22:42.939 2026-07-19 09:04:56.405
TXT apple-domain-verification=XeKEoqnRNUfkUc5l 2026-05-26 02:22:42.939 2026-07-19 09:04:56.405
NS ns04.quack-dns.com 2026-05-26 02:22:42.939 2026-07-19 09:04:56.405
NS dns4.p05.nsone.net 2026-05-26 02:22:42.939 2026-07-19 09:04:56.405
TXT MS=ms71454350 2026-05-26 02:22:42.939 2026-07-19 09:04:56.405
NS ns03.quack-dns.com 2026-05-26 02:22:42.939 2026-07-19 09:04:56.405
NS dns2.p05.nsone.net 2026-05-26 02:22:42.939 2026-07-19 09:04:56.405
NS ns02.quack-dns.com 2026-05-26 02:22:42.939 2026-07-19 09:04:56.405
TXT cursor-domain-verification-nxwg1m=QRyFwelq3dM8RzBmvRla2boHy 2026-05-26 02:22:42.939 2026-07-19 09:04:56.405
TXT mistral-domain-verification=1b914b8749d84fc51987d1cd2b9f86b38617aa4d 2026-05-26 02:22:42.939 2026-07-19 09:04:56.405
CAA 0 issue "digicert.com" 2026-05-26 02:22:42.939 2026-07-19 09:04:56.405
NS dns3.p05.nsone.net 2026-05-26 02:22:42.939 2026-07-19 09:04:56.405
TXT openai-domain-verification=dv-OKbsaUeVbNte6OPtWDpdt4Xr 2026-05-26 02:22:42.939 2026-07-19 09:04:56.405
NS ns01.quack-dns.com 2026-05-26 02:22:42.939 2026-07-19 09:04:56.405
NS dns1.p05.nsone.net 2026-05-26 02:22:42.939 2026-07-19 09:04:56.405
CAA 0 issue "letsencrypt.org" 2026-05-26 02:22:42.939 2026-07-19 09:04:56.405
TXT ZOOM_verify_QSjXtfOfRHiY0O9gD5E4Ug 2026-05-26 02:22:42.939 2026-07-19 09:04:56.405
TXT v=spf1 include:mailer.duckduckgo.com include:spf.protection.outlook.com include:duck.com include:mail.zendesk.com -all 2026-05-26 02:22:42.939 2026-07-19 09:04:56.405
TXT bw=IOlfo6xQJX+xewM7+IiPqOSIPtLXKrWoS2RXCTPMmQZc 2026-05-26 02:22:42.939 2026-07-19 09:04:56.405
MX 0 duckduckgo-com.mail.protection.outlook.com 2026-05-26 02:22:42.939 2026-07-19 09:04:56.405
A 52.142.124.215 2026-06-14 22:23:29.853 2026-07-19 09:04:56.405