Check-Host.cc

Domain

nginx.org

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

Run a live full scan of nginx.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
17
A/AAAA targets
Subdomains
46
CT + scan + body
Record Types
5
seen in DNS
Observed Certs
5
in our scans

DNS Records

A
3.125.197.172, 3.136.61.53, 3.147.99.198, 52.58.199.22
AAAA
2a05:d014:5c0:2600::6, 2a05:d014:5c0:2601::6
MX
10 mail.nginx.org
NS
ns1.f5clouddns.com, ns2.f5clouddns.com
TXT
google-site-verification=FnbM63M8trsWPaAVXzpX1ycy4deAdB_OaXh694KtdFU, v=spf1 ip4:206.251.255.60/30 ip4:94.130.165.194/32 ip4:206.251.255.64/31 ~all
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

Every subdomain we know about — harvested from CT-log SANs, scan-observed certs and HTML body references — paired with its current A/AAAA target.

Tech Stack

Tech detection pending

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

TLS Certificates

Subject: nginx.org
Issuer: nginx.org
SANs: *.nginx.org, nginx.org
Subject: nginx.org
Issuer: nginx.org
SANs: nginx.org
Subject: nginx.org
Issuer: R3
SANs: *.nginx.org, nginx.org

IPs Citing This Domain

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

104.168.120.133:80 href · ×138
92.205.16.157:80 href · ×61
78.47.41.108:80 href · ×7
120.240.155.94:80 href · ×6
78.47.117.167:80 href · ×6
94.228.36.133:443 href · ×6
157.7.137.156:443 href · ×6
128.163.202.127:80 href · ×6
142.132.232.208:80 href · ×6
129.226.79.69:80 href · ×6
139.199.228.202:80 href · ×6
159.111.242.213:80 href · ×6
210.131.217.222:443 href · ×6
24.58.136.3:80 href · ×6
43.162.221.237:80 href · ×6
213.215.222.190:443 href · ×6
219.163.199.200:443 href · ×6
170.81.186.87:80 href · ×6
185.139.32.202:443 href · ×6
103.250.72.41:443 href · ×6
78.47.143.15:80 href · ×6
163.43.225.75:80 href · ×6
211.75.181.173:80 href · ×6
199.184.157.233:443 href · ×6
208.93.159.158:80 href · ×6
219.94.252.193:443 href · ×6
85.215.59.126:80 href · ×6
80.242.193.228:80 href · ×6
192.67.81.205:443 href · ×6
121.78.34.210:80 href · ×6
82.223.234.1:443 href · ×6
34.124.183.39:80 href · ×6
159.69.80.82:443 href · ×6
133.125.63.9:80 href · ×6
168.119.158.201:443 href · ×6
31.220.5.43:80 href · ×5
140.238.11.122:443 href · ×5
43.136.103.85:80 href · ×4
65.109.230.15:80 href · ×4
192.188.136.174:443 href · ×4
47.99.197.164:80 href · ×4
45.139.26.42:80 href · ×4
85.118.201.206:443 href · ×4
134.65.228.244:80 href · ×4
23.88.127.130:443 href · ×4
119.29.13.220:80 href · ×4
75.119.133.126:80 href · ×4
64.253.33.94:443 href · ×4
153.120.74.195:443 href · ×4
4.188.5.74:443 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.

Origin IP Origin ASN CDN ASN Confidence Reasoning
104.224.155.36 AS25820 AS16509 95% cert 9ebb81da… served by 104.224.155.36 (AS25820) carries SAN nginx.org which currently resolves through Amazon (AS16509) at 52.58.199.22, 2a05:d014:5c0:2600::6, 2a05:d014:5c0:2601::6, 3.125.197.172
216.238.109.15 AS20473 AS16509 95% cert f2b80107… served by 216.238.109.15 (AS20473) carries SAN nginx.org which currently resolves through Amazon (AS16509) at 3.125.197.172, 2a05:d014:5c0:2600::6, 2a05:d014:5c0:2601::6, 52.58.199.22

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
AAAA 2a05:d014:5c0:2600::6 2026-05-25 21:54:50.392 2026-07-30 23:55:24.760
AAAA 2a05:d014:5c0:2601::6 2026-05-25 21:54:50.392 2026-07-30 23:55:24.760
A 52.58.199.22 2026-05-25 21:54:50.392 2026-07-30 23:55:24.760
A 3.125.197.172 2026-05-25 21:58:50.500 2026-07-28 20:23:38.809
NS ns1.f5clouddns.com 2026-05-25 22:05:29.416 2026-07-30 23:55:24.760
NS ns2.f5clouddns.com 2026-05-25 22:05:29.416 2026-07-30 23:55:24.760
TXT v=spf1 ip4:206.251.255.60/30 ip4:94.130.165.194/32 ip4:206.251.255.64/31 ~all 2026-05-25 22:05:29.416 2026-07-24 14:51:30.611
MX 10 mail.nginx.org 2026-05-25 22:05:29.416 2026-07-24 19:30:33.020
TXT google-site-verification=FnbM63M8trsWPaAVXzpX1ycy4deAdB_OaXh694KtdFU 2026-05-25 22:05:29.416 2026-07-30 23:55:24.760
A 3.147.99.198 2026-06-16 01:57:03.624 2026-07-30 23:44:08.158
A 3.136.61.53 2026-06-17 22:52:44.786 2026-07-28 19:11:54.346