Check-Host.cc

Try 1.1.1.1 AS13335 check-host.cc /country/de /tld/cc
Domain

go.openspeedtest.com

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

DNS Check HTTP Check Run Full Scan .com TLD

Run a live full scan of go.openspeedtest.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
3
seen in DNS
Observed Certs
5
in our scans

DNS Records

A
23.239.29.5
AAAA
2600:3c00::f03c:92ff:fe4d:85ad
MX
5 mail.go.openspeedtest.com
NS
—
TXT
—
CNAME
—
CAA
—

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.

74.50.11.78:443 href · ×12
202.68.93.235:443 href · ×8
49.13.253.149:443 href · ×8
103.169.40.68:80 href · ×8
223.25.3.46:443 href · ×8
213.255.246.229:443 href · ×8
65.79.250.79:80 href · ×8
75.2.123.224:80 href · ×8
62.12.154.202:80 href · ×8
130.162.212.212:80 href · ×8
46.225.170.29:80 href · ×8
50.116.19.41:80 href · ×8
51.81.27.13:443 href · ×8
185.163.244.9:80 href · ×8
195.110.52.9:8080 href · ×8
47.108.131.197:443 href · ×8
164.163.176.34:443 href · ×8
37.187.206.121:443 href · ×8
89.207.90.87:80 href · ×8
47.108.131.197:80 href · ×8
185.73.168.40:80 href · ×8
185.20.176.16:443 href · ×8
103.127.169.1:80 href · ×8
179.63.132.14:443 href · ×8
40.90.179.83:443 href · ×8
188.225.24.118:443 href · ×8
31.185.4.254:443 href · ×8
45.169.29.6:80 href · ×8
67.160.64.35:8888 href · ×8
195.179.105.94:443 href · ×8
102.68.40.198:8080 href · ×8
159.69.185.230:443 href · ×8
194.135.46.48:443 href · ×8
91.138.49.73:443 href · ×8
45.169.29.6:443 href · ×8
192.38.3.236:443 href · ×8
185.177.68.15:80 href · ×8
41.160.0.40:443 href · ×8
138.124.69.78:443 href · ×4
110.41.150.252:443 href · ×4
84.235.161.49:8081 href · ×4
217.78.233.196:443 href · ×4
109.120.156.139:443 href · ×4
80.64.106.105:80 href · ×4
185.237.237.6:443 href · ×4
109.87.254.100:8080 href · ×4
210.10.78.220:443 href · ×4
87.121.51.18:80 href · ×4
103.217.156.80:443 href · ×4
41.160.0.40:80 href · ×4

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 23.239.29.5 2026-05-25 21:58:50.500 2026-07-28 19:48:54.308
AAAA 2600:3c00::f03c:92ff:fe4d:85ad 2026-05-25 21:58:50.500 2026-07-28 19:48:54.308
MX 5 mail.go.openspeedtest.com 2026-05-25 22:05:29.416 2026-07-28 19:48:54.308