Check-Host.cc

Domain

yoast.com

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

Run a live full scan of yoast.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
104.18.32.250, 172.64.155.6
AAAA
2606:4700:440c::ac40:9b06, 2a06:98c1:3100::6812:20fa, 2a06:98c1:310d::6812:20fa, 2a06:98c1:310d::ac40:9b06
MX
1 yoast-com.mail.protection.outlook.com
NS
michelle.ns.cloudflare.com, noah.ns.cloudflare.com
TXT
MS=ms78685604, Z3qBVG59qHmN9/lxOB6rZvFnW07XoQpUr1m3NNidUTs=, facebook-domain-verification=86uvc5980643pknxh7zh6ubsch1be3, google-site-verification=5fk1rgHgsRBL4zF9J22BTHatklicABBD2u9PiYjG29c, google-site-verification=UIM9RxPitiw_QZ6DWa-DJrgiL6xN6B8qtwTT1TzRy3k, google-site-verification=VH2W1c57ncgMkRuSXwDjXWG4M6TLQNcFK0VmWsF9uyE, google-site-verification=ZeQqi72uJEHU2igUGGYFqyBusMuawaAuaqzTkGO3CvQ, google-site-verification=m3RQqR4eW1BsnuoNhE4cC5in3LK9H9DKv_iwhoDjEwM
CNAME
CAA
0 issue "comodoca.com", 0 issue "digicert.com", 0 issue "globalsign.com", 0 issue "letsencrypt.org", 0 issue "pki.goog", 0 issuewild "comodoca.com", 0 issuewild "digicert.com", 0 issuewild "globalsign.com"

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
ui-library.yoast.com 2026-06-23 16:51:44.504
yoast.com 2026-07-28 20:47:52.650
academy.yoast.com 2026-06-21 07:29:42.807
am.yoast.com 2026-06-21 08:01:03.227
cbgurbm6eeotnm6tab.yoast.com 2026-06-21 04:05:13.766
cdn.yoast.com 2026-06-21 04:32:30.404
my.yoast.com 2026-06-21 06:27:57.185
n8n.yoast.com 2026-06-22 04:01:16.679
new-ui.yoast.com 2026-06-21 07:37:56.655
ra-op-ansible.yoast.com 2026-06-21 08:45:19.665
ra-op-yoast1.yoast.com 2026-06-22 00:04:36.859
sandbox-staging-5.yoast.com 2026-06-21 08:17:32.791
sandbox-staging.yoast.com 2026-06-21 06:42:36.750
staging-4.yoast.com 2026-06-21 04:14:42.683
staging-plugins-my.yoast.com 2026-06-21 08:01:03.227
staging-shop2.yoast.com 2026-06-19 01:50:56.343
status.yoast.com 2026-07-19 04:47:04.815
tracking.yoast.com 2026-06-21 05:01:31.142
worker2-staging-shop.yoast.com 2026-06-21 09:09:17.349
1-shopify.yoast.com
1970-01-01 00:00:00.000
1-worker-shopify.yoast.com
1970-01-01 00:00:00.000
academy-staging-5.yoast.com
1970-01-01 00:00:00.000
ci.yoast.com
1970-01-01 00:00:00.000
intranet-staging.yoast.com
1970-01-01 00:00:00.000
intranet.yoast.com
1970-01-01 00:00:00.000
jobs.yoast.com
1970-01-01 00:00:00.000
mediakit-staging-4.yoast.com
1970-01-01 00:00:00.000
mediakit-staging-5.yoast.com
1970-01-01 00:00:00.000
mediakit-staging-platform.yoast.com
1970-01-01 00:00:00.000
metabase.yoast.com
1970-01-01 00:00:00.000
n8nv1.yoast.com
1970-01-01 00:00:00.000
sandbox-staging-4.yoast.com
1970-01-01 00:00:00.000
sandbox.yoast.com
1970-01-01 00:00:00.000
staging-4-my.yoast.com
1970-01-01 00:00:00.000
staging-5-my.yoast.com
1970-01-01 00:00:00.000
staging-my.yoast.com
1970-01-01 00:00:00.000
tickets.yoast.com
1970-01-01 00:00:00.000
uat-ai-insights-frontend.yoast.com
1970-01-01 00:00:00.000
worker1-staging-shop.yoast.com
1970-01-01 00:00:00.000
www.yoast.com
1970-01-01 00:00:00.000

Tech Stack

Tech detection pending

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

TLS Certificates

Subject: CloudFlare Origin Certificate
Issuer: C=US, O=CloudFlare\, Inc., OU=CloudFlare Origin SSL Certificate Authority, L=San Francisco, ST=California
SANs: *.yoast.com, yoast.com

IPs Citing This Domain

No citing IPs found yet

As the world-sweep progresses, hosts referencing this domain in their HTML will surface here.

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 104.18.32.250 2026-05-25 21:54:50.392 2026-07-28 20:47:52.650
AAAA 2606:4700:440c::ac40:9b06 2026-05-25 21:54:50.392 2026-06-24 00:26:21.061
AAAA 2a06:98c1:3100::6812:20fa 2026-05-25 21:54:50.392 2026-06-24 00:26:21.061
A 172.64.155.6 2026-05-25 21:54:50.392 2026-07-28 20:47:52.650
TXT google-site-verification=UIM9RxPitiw_QZ6DWa-DJrgiL6xN6B8qtwTT1TzRy3k 2026-05-25 22:05:29.416 2026-07-28 20:47:52.650
NS michelle.ns.cloudflare.com 2026-05-25 22:05:29.416 2026-07-28 20:47:52.650
TXT google-site-verification=omOoCAQCaPA-sw2aR2DaVaBkYf929VYJTAwOzOHFFUc 2026-05-25 22:05:29.416 2026-07-28 20:47:52.650
TXT google-site-verification=ZeQqi72uJEHU2igUGGYFqyBusMuawaAuaqzTkGO3CvQ 2026-05-25 22:05:29.416 2026-07-28 20:47:52.650
TXT Z3qBVG59qHmN9/lxOB6rZvFnW07XoQpUr1m3NNidUTs= 2026-05-25 22:05:29.416 2026-07-28 20:47:52.650
TXT MS=ms78685604 2026-05-25 22:05:29.416 2026-07-28 20:47:52.650
MX 1 yoast-com.mail.protection.outlook.com 2026-05-25 22:05:29.416 2026-07-28 20:47:52.650
TXT google-site-verification=VH2W1c57ncgMkRuSXwDjXWG4M6TLQNcFK0VmWsF9uyE 2026-05-25 22:05:29.416 2026-07-28 20:47:52.650
TXT google-site-verification=pokWAvijRJd6ZVb3f8xkmyJa2yyptsoMj_bqQQGY7Cc 2026-05-25 22:05:29.416 2026-07-28 20:47:52.650
TXT google-site-verification=m3RQqR4eW1BsnuoNhE4cC5in3LK9H9DKv_iwhoDjEwM 2026-05-25 22:05:29.416 2026-07-28 20:47:52.650
TXT prowly-verification=d23b5db23f86c15e0d50137c6a5fd56e4ed19210d865f4346487126e0a64c1e2 2026-05-25 22:05:29.416 2026-07-28 20:47:52.650
TXT google-site-verification=vg7XQpZ7Jx981kNJlyCONodaJ1FDFvpfF3ZnMJylelQ 2026-05-25 22:05:29.416 2026-07-28 20:47:52.650
TXT google-site-verification=nsTjyg2Yxp4qMZwjzE9c880aGsdXyuTVSausZY76PWs 2026-05-25 22:05:29.416 2026-07-28 20:47:52.650
NS noah.ns.cloudflare.com 2026-05-25 22:05:29.416 2026-07-28 20:47:52.650
TXT openai-domain-verification=dv-QVbniSWRe6FPSCd8XMkPSfGK 2026-05-25 22:05:29.416 2026-07-28 20:47:52.650
TXT facebook-domain-verification=86uvc5980643pknxh7zh6ubsch1be3 2026-05-25 22:05:29.416 2026-07-28 20:47:52.650
TXT google-site-verification=5fk1rgHgsRBL4zF9J22BTHatklicABBD2u9PiYjG29c 2026-05-25 22:05:29.416 2026-07-28 20:47:52.650
TXT v=spf1 include:_spf.google.com include:spf.mtasv.net include:helpscoutemail.com include:emsd1.com include:spf.protection.outlook.com -all 2026-05-25 22:05:29.416 2026-07-28 20:47:52.650
CAA 0 issuewild "comodoca.com" 2026-05-25 23:59:40.866 2026-07-28 20:47:52.650
CAA 0 issuewild "letsencrypt.org" 2026-05-25 23:59:40.866 2026-07-28 20:47:52.650
CAA 0 issue "pki.goog" 2026-05-25 23:59:40.866 2026-07-28 20:47:52.650
CAA 0 issue "letsencrypt.org" 2026-05-25 23:59:40.866 2026-07-28 20:47:52.650
CAA 0 issue "globalsign.com" 2026-05-25 23:59:40.866 2026-07-28 20:47:52.650
CAA 0 issue "digicert.com" 2026-05-25 23:59:40.866 2026-07-28 20:47:52.650
CAA 0 issue "comodoca.com" 2026-05-25 23:59:40.866 2026-07-28 20:47:52.650
CAA 0 issuewild "globalsign.com" 2026-05-25 23:59:40.866 2026-07-28 20:47:52.650
CAA 0 issuewild "digicert.com" 2026-05-25 23:59:40.866 2026-07-28 20:47:52.650
AAAA 2a06:98c1:310d::6812:20fa 2026-07-15 19:40:12.781 2026-07-28 20:47:52.650
AAAA 2a06:98c1:310d::ac40:9b06 2026-07-15 19:40:12.781 2026-07-28 20:47:52.650
TXT linkedin-site-verification=7ab1ba17-2157-4fd0-b0b7-5cecd252ea82 2026-07-28 10:49:00.176 2026-07-28 20:47:52.650