Check-Host.cc

Domain

www.opensource.org

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

Run a live full scan of www.opensource.org

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
A/AAAA targets
Subdomains
CT + scan + body
Record Types
seen in DNS
Observed Certs
in our scans

DNS Records

A
AAAA
MX
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.

50.176.151.59:80 href · ×6
211.227.232.140:443 href · ×4
104.248.12.80:80 href · ×4
89.126.211.240:443 href · ×3
89.117.147.128:443 href · ×3
201.16.205.93:443 href · ×3
177.190.187.32:443 href · ×3
15.204.228.106:443 href · ×3
104.234.90.149:443 href · ×3
130.185.238.26:443 href · ×3
81.169.221.240:443 href · ×3
45.77.114.241:443 href · ×3
45.181.34.13:443 href · ×2
154.12.243.93:443 href · ×2
91.134.241.254:443 href · ×2
89.126.222.155:443 href · ×2
178.32.192.48:443 href · ×2
74.207.253.96:443 href · ×2
159.65.235.248:443 href · ×2
45.224.219.84:8443 href · ×2
211.227.232.130:443 href · ×2
103.229.192.160:443 href · ×2
95.168.168.106:443 href · ×2
185.132.83.231:443 href · ×2
182.48.64.230:443 href · ×2
190.71.222.213:443 href · ×2
155.138.145.103:443 href · ×2
74.207.234.45:443 href · ×2
186.194.52.148:443 href · ×2
50.39.160.156:80 href · ×2
202.146.132.5:80 href · ×2
172.233.145.74:443 href · ×2
119.17.142.183:80 href · ×2
142.163.20.52:80 href · ×2
38.255.123.182:443 href · ×2
51.81.32.165:443 href · ×2
172.233.156.230:443 href · ×2
187.19.96.52:443 href · ×2
94.237.32.200:443 href · ×2
62.84.184.201:443 href · ×2
216.238.69.156:443 href · ×2
154.7.97.56:443 href · ×2
108.20.78.190:443 href · ×2
74.207.240.208:443 href · ×2
45.173.72.10:443 href · ×2
104.248.175.106:8080 href · ×2
185.8.245.42:443 href · ×2
66.185.25.150:443 href · ×2
45.77.113.225:443 href · ×2
51.178.7.30:443 href · ×2

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

Domain timeline pending

Passive-DNS history accumulates as our forward-DNS crawler observes A/AAAA/MX/NS/TXT records over time.