Check-Host.cc

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

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

DNS Records

A
198.252.206.1
AAAA
—
MX
1 aspmx.l.google.com, 10 alt3.aspmx.l.google.com, 10 alt4.aspmx.l.google.com, 5 alt1.aspmx.l.google.com, 5 alt2.aspmx.l.google.com
NS
damian.ns.cloudflare.com, sureena.ns.cloudflare.com
TXT
MS=ms52592611, ZOOM_verify_AbkNwz5bBl0eurcDKyhhuk, adobe-idp-site-verification=25ba5203f3687c9cd6ee3223ee5de1528917828d1da3ebd3bd9a44094cbfc4ac, anthropic-domain-verification-q70207=cKyy0llXkD10O4rDQpWz8tQ5K, apple-domain-verification=O9jlnJXAQ7sNSZqC, atlassian-domain-verification=byLeZgl3MIcfOqwWuMhq8Fhr/1zem/jIaouJegvDZbBKUU5OqhwDjdpkyYg5CTzm, cursor-domain-verification-sb0ayf=Pk6AyptQuTpzpcuSlfYGWloxv, docker-verification=d65aee54-9091-4ceb-b792-61f5d5804050
CNAME
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CAA
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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

130.61.227.118:443 794add2c4e4e…
Subject: cneqqppd.stackoverflow.com
Issuer: cneqqppd.stackoverflow.com
SANs: cneqqppd.stackoverflow.com
195.15.202.241:443 f56004d1a7e9…
Subject: stackoverflow.com
Issuer: stackoverflow.com
SANs: stackoverflow.com
195.15.202.118:443 aff6251a2489…
Subject: stackoverflow.com
Issuer: stackoverflow.com
SANs: stackoverflow.com

IPs Citing This Domain

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

178.128.81.244:443 href · ×26
83.246.77.194:80 href · ×15
173.230.151.223:80 href · ×14
18.218.194.52:443 href · ×9
18.218.84.212:80 href · ×8
100.49.165.162:443 href · ×8
44.208.144.157:80 href · ×8
3.26.228.228:80 href · ×8
88.198.15.226:80 href · ×8
178.62.120.191:80 href · ×8
3.212.171.31:80 href · ×8
65.109.54.31:80 href · ×7
91.197.0.56:443 href · ×7
138.128.210.234:443 href · ×6
23.92.16.120:443 href · ×6
154.17.27.98:443 href · ×6
68.183.77.61:8080 href · ×6
130.162.186.141:8000 href · ×6
164.90.255.134:443 href · ×5
13.234.247.29:80 href · ×5
128.199.85.39:443 href · ×5
116.203.33.222:80 href · ×5
57.129.12.74:443 href · ×4
134.249.237.212:8080 href · ×4
54.190.185.235:80 href · ×4
164.90.156.233:443 href · ×4
158.180.61.25:80 href · ×4
63.35.198.87:443 href · ×4
111.230.92.235:8088 href · ×4
18.184.132.174:443 href · ×4
90.100.212.104:80 href · ×4
140.252.87.2:8080 href · ×4
198.163.206.214:81 href · ×4
172.104.55.14:80 href · ×4
1.95.220.17:80 href · ×4
212.122.76.129:8443 href · ×4
149.248.62.189:443 href · ×4
103.225.11.174:80 href · ×4
13.213.84.65:443 href · ×4
176.119.30.88:80 href · ×4
148.70.223.99:443 href · ×4
159.223.51.89:443 href · ×4
51.79.212.152:443 href · ×4
104.248.30.75:443 href · ×4
206.189.147.6:443 href · ×4
194.195.208.198:80 href · ×4
114.23.93.135:80 href · ×4
81.9.108.60:443 href · ×4
217.160.74.150:443 href · ×4
8.209.210.189:443 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
195.15.202.241 AS29222 AS13335 95% cert f56004d1… served by 195.15.202.241 (AS29222) carries SAN stackoverflow.com which currently resolves through Cloudflare (AS13335) at 198.252.206.1
195.15.202.118 AS29222 AS13335 95% cert aff6251a… served by 195.15.202.118 (AS29222) carries SAN stackoverflow.com which currently resolves through Cloudflare (AS13335) at 198.252.206.1

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 198.252.206.1 2026-05-25 21:56:50.553 2026-07-28 20:47:52.650
TXT openai-domain-verification=dv-GLNufzbWDzAq0fDXHD6jxeCK 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
MX 10 alt3.aspmx.l.google.com 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
TXT MS=ms52592611 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
TXT anthropic-domain-verification-q70207=cKyy0llXkD10O4rDQpWz8tQ5K 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
TXT onetrust-domain-verification=0d9d67f856334905a54256085a5768b3 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
TXT ibmid=4e7cbbb3-5f12-40b4-96c7-5b064347b822 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
TXT ZOOM_verify_AbkNwz5bBl0eurcDKyhhuk 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
TXT adobe-idp-site-verification=25ba5203f3687c9cd6ee3223ee5de1528917828d1da3ebd3bd9a44094cbfc4ac 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
TXT make-domain-verification=eec31159-f381-4f38-9d89-e59123dd023e 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
TXT google-site-verification=rdWtMbplKjbRHGr2dNONfwkqithlUvjr3u6i8QEz_mo 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
TXT docusign=4262531d-29f4-4a62-9f33-ae9f66f5247b 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
TXT google-site-verification=2Bi6SYw5skkRexdtdLPL2gpxeIhLxnYVqITVP9Htl3w 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
NS damian.ns.cloudflare.com 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
TXT apple-domain-verification=O9jlnJXAQ7sNSZqC 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
TXT google-site-verification=o3EMam8yBGo1yEjyybIiZcOunGHOQKpo8JmOtp9n1BU 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
TXT v=spf1 ip4:52.38.191.241 include:_spf1.stackoverflow.com ~all 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
TXT onetrust-domain-verification=e445562296a64c649ae3d520230b8c4c 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
TXT profound-domain-verification-5p599x=hWudYd2Du6WOYOod5ko9Rwnp8 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
MX 5 alt2.aspmx.l.google.com 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
MX 10 alt4.aspmx.l.google.com 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
TXT docker-verification=d65aee54-9091-4ceb-b792-61f5d5804050 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
MX 1 aspmx.l.google.com 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
TXT v=MCPv1; k=ed25519; p=VhBofO8RaYvTvHT7q5tTty+HQeCU8R6h5Y8k/sj20So= 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
TXT cursor-domain-verification-sb0ayf=Pk6AyptQuTpzpcuSlfYGWloxv 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
MX 5 alt1.aspmx.l.google.com 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
TXT google-site-verification=ctogLnZNAdc_CXq8yOhODMLpmugGynjxKecKHDz4oL8 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
NS sureena.ns.cloudflare.com 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
TXT atlassian-domain-verification=byLeZgl3MIcfOqwWuMhq8Fhr/1zem/jIaouJegvDZbBKUU5OqhwDjdpkyYg5CTzm 2026-05-26 00:03:35.658 2026-07-28 20:47:52.650
TXT work-os-domain-verification-43a3e0=GoDUTSc5MMjDaiIC3s5yRKqMD 2026-07-15 20:04:13.980 2026-07-28 20:47:52.650