Check-Host.cc

Domain

cloudflare.com

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

Run a live full scan of cloudflare.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
688
A/AAAA targets
Subdomains
892
CT + scan + body
Record Types
6
seen in DNS
Observed Certs
12
in our scans

DNS Records

A
104.16.132.229, 104.16.133.229
AAAA
2606:4700::6810:84e5, 2606:4700::6810:85e5
MX
10 mxa.global.inbound.cf-emailsecurity.net, 10 mxb.global.inbound.cf-emailsecurity.net, 5 mxa-canary.global.inbound.cf-emailsecurity.net, 5 mxb-canary.global.inbound.cf-emailsecurity.net
NS
ns3.cloudflare.com, ns4.cloudflare.com, ns5.cloudflare.com, ns6.cloudflare.com, ns7.cloudflare.com
TXT
DirectFedAuthUrl=https://cloudflare-security.cloudflareaccess.com/cdn-cgi/access/sso/saml/dba6756ad312fc13c45f705cf7f5e87f4d658be016c41f950329aa4085b3abc1, DirectFedAuthUrl=https://cloudflare-security.cloudflareaccess.com/cdn-cgi/access/sso/saml/ebec933773c69c93420d13e6776adb8c4a190f6281f9d132bcebd7dcb0967bdd, MS=ms70274184, ZOOM_verify_7LFBvOO9SIigypFG2xRlMA, _neqmkgaq1lq9it5s8qmetrhbnu121wb, _saml-domain-challenge.2dc00405-79cd-457b-b288-a119c6f0c7b7.71996d53-d178-4ba9-bef4-7f7e46edab74.cloudflare.com=1c8736fd-84b2-4197-985f-3fb2852f2457, _wkjc0fot0d7qrvrdt78bxkj2e2o67d2, apple-domain-verification=DNnWJoArJobFJKhJ
CNAME
CAA
0 iodef "mailto:tls-abuse@cloudflare.com", 0 issue "comodoca.com", 0 issue "digicert.com; cansignhttpexchanges=yes", 0 issue "letsencrypt.org", 0 issue "pki.goog; cansignhttpexchanges=yes", 0 issue "ssl.com", 0 issuewild "comodoca.com", 0 issuewild "digicert.com; cansignhttpexchanges=yes"

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.

Subdomain Resolves to Last seen
ajax.cloudflare.com 2026-07-28 06:07:16.226
api.cloudflare.com 2026-07-27 18:51:05.438
developers.cloudflare.com 2026-07-28 20:23:38.809
gh-code.developers.cloudflare.com 2026-06-19 06:17:37.770
apple-relay.cloudflare.com 2026-07-17 01:46:02.721
cp11.cloudflare.com 2026-06-04 04:10:22.883
cp3.cloudflare.com 2026-07-24 03:48:08.296
cp4.cloudflare.com 2026-06-18 01:56:00.780
cp5.cloudflare.com 2026-06-01 12:23:20.323
cp7.cloudflare.com 2026-07-28 15:52:41.560
oai-gateway.cloudflare.com 2026-07-27 20:07:00.564
privacy-relay.cloudflare.com 2026-07-26 03:56:53.668
staging.support.cloudflare.com 2026-06-20 17:23:17.122
cp10.cloudflare.com 2026-06-17 19:09:07.446
aurora.ns.cloudflare.com 2026-06-14 22:23:29.853
aws-flow-logs.cloudflare.com 2026-07-27 10:40:31.409
data.em2.cloudflare.com 2026-05-31 13:01:40.755
jill.ns.cloudflare.com 2026-05-26 03:28:26.010
lamar.ns.cloudflare.com 2026-05-26 18:01:13.258
phishfilet.cloudflare.com 2026-06-22 19:10:48.746
phishnet.cloudflare.com 2026-06-20 15:19:10.393
cp9.cloudflare.com 2026-06-19 11:06:37.404
90699250-73fc-4dac-919c-7c5ccb821535.search.ai.cloudflare.com 2026-05-26 10:00:11.780
abuse.cloudflare.com 2026-07-25 06:34:36.452
access.cloudflare.com 2026-07-28 04:34:06.424
accounts.realtime.cloudflare.com 2026-07-24 06:45:51.066
admin-staging.registrar.cloudflare.com 2026-06-15 18:55:38.313
admin.registrar.cloudflare.com 2026-06-15 18:55:38.313
admin.sqlite.cloudflare.com 2026-07-28 17:41:42.760
advertisements.indexer-staging.ipfs.cloudflare.com 2026-07-27 06:20:08.677
aig.cloudflare.com 2026-06-04 08:08:23.360
amp.cloudflare.com 2026-06-19 21:25:52.624
api.notifications.cloudflare.com 2026-07-19 23:13:46.632
api.radar.cloudflare.com 2026-07-26 05:18:43.855
api.radar.staging.cloudflare.com 2026-06-18 06:30:39.207
api.staging.cloudflare.com 2026-06-20 13:23:11.634
api.staging.realtime.cloudflare.com 2026-06-23 09:17:07.306
api.workers.cloudflare.com 2026-07-21 22:39:47.486
api0.staging.realtime.cloudflare.com 2026-06-23 15:15:41.009
apjc.labs.cloudflare.com 2026-06-15 22:11:55.140
app-relay.cloudflare.com 2026-07-22 16:41:39.505
assets.autorag.ai.cloudflare.com 2026-06-18 13:01:22.134
aueast.labs.cloudflare.com 2026-07-22 09:16:17.347
auth.cloudflare.com 2026-07-20 04:28:26.287
aws-flow-logs-federal.cloudflare.com 2026-06-23 19:49:46.414
bastion.h3.speed.cloudflare.com 2026-06-22 06:32:33.582
billing.support.cloudflare.com 2026-07-23 17:19:18.601
bindings-staging.mcp.cloudflare.com 2026-06-03 09:11:27.719
bindings.mcp.cloudflare.com 2026-06-03 09:14:27.872
blocked.teams.cloudflare.com 2026-07-28 20:31:39.973
blocked.teams.fed.cloudflare.com 2026-07-28 16:11:03.557
blog.api.www.cloudflare.com 2026-07-19 13:51:00.628
blog.cloudflare.com 2026-07-26 08:45:52.550
canary.one.dash.cloudflare.com 2026-06-20 02:28:00.103
casb-staging.mcp.cloudflare.com 2026-06-20 08:27:08.801
cdn.labs.cloudflare.com 2026-06-18 09:44:15.386
cdnjs-staging.cloudflare.com 2026-06-23 17:41:35.166
cdnjs.cloudflare.com 2026-07-28 20:47:52.650
certifications.cloudflare.com 2026-07-23 04:18:47.799
certvalidate-staging.cloudflare.com 2026-07-15 11:48:48.825
cf-assets.www.cloudflare.com 2026-05-26 09:51:10.377
challenge.docs.cloudflare.com 2026-06-04 17:02:10.425
challenges.cloudflare.com 2026-07-28 20:31:39.973
cloudflare.com 2026-07-28 20:31:39.973
community.cloudflare.com 2026-07-25 02:00:39.731
containers.cloudflare.com 2026-06-22 13:27:08.836
containers.mcp.cloudflare.com 2026-06-20 02:24:47.793
content.labs.cloudflare.com 2026-07-21 12:22:36.618
contrail-staging.ces.dlp.teams.cloudflare.com 2026-06-17 23:09:20.341
cp.cloudflare.com 2026-07-28 13:59:46.480
croissant.pat-issuer.cloudflare.com 2026-06-15 11:30:07.016
crypto.cloudflare.com 2026-07-25 16:04:51.411
csp-reporting.cloudflare.com 2026-06-03 04:24:00.407
dash.cloudflare.com 2026-07-28 19:11:54.346
dash.key-transparency.cloudflare.com 2026-06-04 15:37:56.477
dash.staging.cloudflare.com 2026-07-26 07:53:47.136
dash.staging.fed.cloudflare.com 2026-07-18 10:04:01.953
datasets.research.cloudflare.com 2026-06-18 06:54:06.198
dcvcheck.cloudflare.com 2026-07-16 00:40:05.979
demo-api.labs.cloudflare.com 2026-07-23 10:09:54.979
dev.ai-worker.dlp.teams.cloudflare.com 2026-06-23 21:35:22.301
dev.pdw.dlp.teams.cloudflare.com 2026-06-20 01:49:05.336
dev.sink.dlp.teams.cloudflare.com 2026-06-22 17:27:55.320
developer.cloudflare.com 2026-06-20 18:37:10.144
dex-staging.mcp.cloudflare.com 2026-06-20 07:19:22.143
dex.cloudflare.com 2026-07-23 18:47:24.950
dex.mcp.cloudflare.com 2026-06-20 02:43:14.726
dns-analytics-staging.mcp.cloudflare.com 2026-06-20 13:34:50.398
dns-analytics.mcp.cloudflare.com 2026-06-20 13:34:50.398
dns.cloudflare.com 2026-07-20 04:28:26.287
docs-vectorize.mcp.cloudflare.com 2026-06-15 07:26:51.369
docs.cloudflare.com 2026-07-24 15:46:57.652
docs.mcp.cloudflare.com 2026-06-20 02:54:48.498
domains.cloudflare.com 2026-07-25 02:00:39.731
edge-staging.admin.sqlite.cloudflare.com 2026-07-28 17:41:42.760
edge.admin.sqlite.cloudflare.com 2026-07-26 13:13:17.770
editor-staging.cloudflare.com 2026-07-23 05:12:43.663
editor.cloudflare.com 2026-07-25 14:08:30.545
en-au.www.cloudflare.com 2026-06-20 02:54:48.498
en-us.www.cloudflare.com 2026-06-20 07:10:22.091
es-la.www.cloudflare.com 2026-06-06 00:38:22.343
es.cloudflare.com 2026-07-20 04:28:26.287
ethereum.cloudflare.com 2026-07-28 01:38:51.183
events.cloudflare.com 2026-07-20 04:28:26.287
examples.notebooks.cloudflare.com 2026-07-23 22:34:44.981
foa-staging.registrar.cloudflare.com 2026-06-23 04:05:10.296
fonts.cloudflare.com 2026-07-20 07:28:56.786
gates.cloudflare.com 2026-06-17 11:42:04.291
gateway-privacy.cloudflare.com 2026-05-31 07:47:40.837
gateway.agents.cloudflare.com 2026-06-22 20:42:37.559
gateway.ai.cloudflare.com 2026-06-04 08:50:14.314
geoglyph.cloudflare.com 2026-06-17 16:09:41.958
grafana.cloudflare.com 2026-07-20 04:28:26.287
graphql.cloudflare.com 2026-07-25 20:57:46.434
h3.speed.cloudflare.com 2026-06-16 19:33:02.004
h3.staging.speed.cloudflare.com 2026-06-22 04:23:17.744
har-sanitizer.dlp.teams.cloudflare.com 2026-07-20 11:02:17.624
help.teams.cloudflare.com 2026-07-22 08:20:08.673
helper.dap.cloudflare.com 2026-06-20 09:09:56.440
helper.storage-proxy.test.dap.cloudflare.com 2026-06-22 16:17:54.639

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.

193.31.98.178:80 href · ×6
185.125.202.164:443 href · ×5
164.70.97.228:443 href · ×4
178.105.217.166:80 href · ×2
5.223.58.131:80 href · ×2
179.43.172.181:443 href · ×2
65.108.49.42:80 href · ×2
37.27.198.207:80 href · ×2
207.180.197.240:80 href · ×2
37.60.235.233:80 href · ×2
54.226.16.178:443 href · ×2
156.227.0.85:443 href · ×2
216.250.96.146:443 href · ×2
23.27.51.171:443 href · ×2
5.9.108.115:80 href · ×2
64.225.133.63:80 href · ×2
103.143.81.157:443 href · ×2
103.26.10.135:443 href · ×2
178.105.179.25:80 href · ×2
181.174.167.12:443 href · ×2
49.13.234.131:443 href · ×2
74.50.65.28:80 href · ×2
157.180.43.170:80 href · ×2
89.124.81.173:443 href · ×2
91.196.163.127:443 href · ×1
167.179.80.93:80 href · ×1
185.180.3.235:80 href · ×1
185.193.126.20:80 href · ×1
49.232.136.164:8080 href · ×1
118.31.115.188:80 href · ×1
31.42.177.183:443 href · ×1
191.252.196.19:443 href · ×1
116.203.202.179:443 href · ×1
110.42.50.254:443 href · ×1
81.163.22.68:443 href · ×1
167.71.208.230:443 href · ×1
103.47.82.175:80 href · ×1
192.210.214.21:5000 href · ×1
100.40.4.23:443 href · ×1
94.177.202.117:80 href · ×1
43.153.55.125:8080 href · ×1
157.180.3.17:443 href · ×1
185.221.213.12:443 href · ×1
100.40.4.23:80 href · ×1
154.21.82.229:80 href · ×1
85.10.143.6:80 href · ×1
3.7.183.148:8080 href · ×1
167.99.41.75:443 href · ×1
103.47.82.175:443 href · ×1
115.190.138.121:80 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.

Origin IP Origin ASN CDN ASN Confidence Reasoning
216.23.86.105 AS203090 AS13335 95% cert 6a704185… served by 216.23.86.105 (AS203090) carries SAN ns.cloudflare.com which currently resolves through Cloudflare (AS13335) at 173.245.58.100, 173.245.59.100
45.133.251.46 AS215439 AS13335 95% cert 4bd83608… served by 45.133.251.46 (AS215439) carries SAN timeline.www.cloudflare.com which currently resolves through Cloudflare (AS13335) at 104.16.124.96, 104.16.123.96, 2606:4700::6810:7b60, 2606:4700::6810:7c60
157.238.134.128 AS2914 AS13335 95% cert 4bd83608… served by 157.238.134.128 (AS2914) carries SAN timeline.www.cloudflare.com which currently resolves through Cloudflare (AS13335) at 104.16.124.96, 104.16.123.96, 2606:4700::6810:7b60, 2606:4700::6810:7c60
151.236.14.26 AS57169 AS13335 95% cert 93fe2676… served by 151.236.14.26 (AS57169) carries SAN blog.api.www.cloudflare.com which currently resolves through Cloudflare (AS13335) at 104.16.124.96, 104.16.123.96, 2606:4700::6810:7b60, 2606:4700::6810:7c60
216.167.73.148 AS2914 AS13335 95% cert 93fe2676… served by 216.167.73.148 (AS2914) carries SAN blog.api.www.cloudflare.com which currently resolves through Cloudflare (AS13335) at 104.16.124.96, 104.16.123.96, 2606:4700::6810:7b60, 2606:4700::6810:7c60
51.250.39.189 AS200350 AS13335 95% cert 3cf29573… served by 51.250.39.189 (AS200350) carries SAN cdnjs.cloudflare.com which currently resolves through Cloudflare (AS13335) at 104.17.24.14, 104.17.25.14, 2606:4700::6811:180e, 2606:4700::6811:190e
23.154.220.235 AS402285 AS13335 95% cert 93fe2676… served by 23.154.220.235 (AS402285) carries SAN blog.api.www.cloudflare.com which currently resolves through Cloudflare (AS13335) at 104.16.124.96, 104.16.123.96, 2606:4700::6810:7b60, 2606:4700::6810:7c60
45.87.121.207 AS216300 AS13335 95% cert 6a704185… served by 45.87.121.207 (AS216300) carries SAN ns.cloudflare.com which currently resolves through Cloudflare (AS13335) at 173.245.58.100, 173.245.59.100
194.226.139.162 AS50214 AS13335 95% cert 3cf29573… served by 194.226.139.162 (AS50214) carries SAN cdnjs.cloudflare.com which currently resolves through Cloudflare (AS13335) at 104.17.24.14, 104.17.25.14, 2606:4700::6811:180e, 2606:4700::6811:190e
31.56.229.240 AS56971 AS13335 95% cert 6a704185… served by 31.56.229.240 (AS56971) carries SAN ns.cloudflare.com which currently resolves through Cloudflare (AS13335) at 173.245.58.100, 173.245.59.100
193.233.138.69 AS210644 AS13335 95% cert 93fe2676… served by 193.233.138.69 (AS210644) carries SAN blog.api.www.cloudflare.com which currently resolves through Cloudflare (AS13335) at 104.16.124.96, 104.16.123.96, 2606:4700::6810:7b60, 2606:4700::6810:7c60
64.178.120.53 AS979 AS13335 95% cert 93fe2676… served by 64.178.120.53 (AS979) carries SAN blog.api.www.cloudflare.com which currently resolves through Cloudflare (AS13335) at 104.16.124.96, 104.16.123.96, 2606:4700::6810:7b60, 2606:4700::6810:7c60
5.180.43.175 AS200590 AS13335 95% cert 93fe2676… served by 5.180.43.175 (AS200590) carries SAN blog.api.www.cloudflare.com which currently resolves through Cloudflare (AS13335) at 104.16.124.96, 104.16.123.96, 2606:4700::6810:7b60, 2606:4700::6810:7c60
77.239.103.86 AS213877 AS13335 95% cert 93fe2676… served by 77.239.103.86 (AS213877) carries SAN blog.api.www.cloudflare.com which currently resolves through Cloudflare (AS13335) at 104.16.124.96, 104.16.123.96, 2606:4700::6810:7b60, 2606:4700::6810:7c60
201.51.28.110 AS57494 AS13335 95% cert 93fe2676… served by 201.51.28.110 (AS57494) carries SAN blog.api.www.cloudflare.com which currently resolves through Cloudflare (AS13335) at 104.16.124.96, 104.16.123.96, 2606:4700::6810:7b60, 2606:4700::6810:7c60
45.78.79.114 AS25820 AS13335 95% cert 93fe2676… served by 45.78.79.114 (AS25820) carries SAN blog.api.www.cloudflare.com which currently resolves through Cloudflare (AS13335) at 104.16.124.96, 104.16.123.96, 2606:4700::6810:7b60, 2606:4700::6810:7c60
159.194.207.177 AS198610 AS13335 95% cert 93fe2676… served by 159.194.207.177 (AS198610) carries SAN blog.api.www.cloudflare.com which currently resolves through Cloudflare (AS13335) at 104.16.124.96, 104.16.123.96, 2606:4700::6810:7b60, 2606:4700::6810:7c60
102.134.48.159 AS400464 AS13335 95% cert 93fe2676… served by 102.134.48.159 (AS400464) carries SAN blog.api.www.cloudflare.com which currently resolves through Cloudflare (AS13335) at 104.16.124.96, 104.16.123.96, 2606:4700::6810:7b60, 2606:4700::6810:7c60
89.127.196.71 AS51395 AS13335 95% cert 6a704185… served by 89.127.196.71 (AS51395) carries SAN ns.cloudflare.com which currently resolves through Cloudflare (AS13335) at 173.245.58.100, 173.245.59.100
104.249.172.113 AS60024 AS13335 95% cert 93fe2676… served by 104.249.172.113 (AS60024) carries SAN blog.api.www.cloudflare.com which currently resolves through Cloudflare (AS13335) at 104.16.124.96, 104.16.123.96, 2606:4700::6810:7b60, 2606:4700::6810:7c60
138.2.55.223 AS31898 AS13335 95% cert 93fe2676… served by 138.2.55.223 (AS31898) carries SAN blog.api.www.cloudflare.com which currently resolves through Cloudflare (AS13335) at 104.16.124.96, 104.16.123.96, 2606:4700::6810:7b60, 2606:4700::6810:7c60
45.32.20.193 AS20473 AS13335 95% cert 93fe2676… served by 45.32.20.193 (AS20473) carries SAN blog.api.www.cloudflare.com which currently resolves through Cloudflare (AS13335) at 104.16.124.96, 104.16.123.96, 2606:4700::6810:7b60, 2606:4700::6810:7c60
192.67.63.172 AS212890 AS13335 95% cert 93fe2676… served by 192.67.63.172 (AS212890) carries SAN blog.api.www.cloudflare.com which currently resolves through Cloudflare (AS13335) at 104.16.124.96, 104.16.123.96, 2606:4700::6810:7b60, 2606:4700::6810:7c60
176.74.222.208 AS51248 AS13335 95% cert 93fe2676… served by 176.74.222.208 (AS51248) carries SAN blog.api.www.cloudflare.com which currently resolves through Cloudflare (AS13335) at 104.16.124.96, 104.16.123.96, 2606:4700::6810:7b60, 2606:4700::6810:7c60
43.254.164.217 AS932 AS13335 95% cert 93fe2676… served by 43.254.164.217 (AS932) carries SAN blog.api.www.cloudflare.com which currently resolves through Cloudflare (AS13335) at 104.16.124.96, 104.16.123.96, 2606:4700::6810:7b60, 2606:4700::6810:7c60

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.