Check-Host.cc

Domain

join.skype.com

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

Run a live full scan of join.skype.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
52.113.194.133, 52.113.195.133
AAAA
2620:1ec:42::133, 2620:1ec:43::133
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.

154.221.30.119:443 href · ×14
103.210.237.231:443 href · ×7
91.90.193.46:80 href · ×4
146.190.97.118:443 href · ×4
120.78.149.13:443 href · ×4
185.253.44.36:80 href · ×4
43.204.73.207:80 href · ×4
185.119.58.246:443 href · ×4
91.106.205.52:443 href · ×3
185.19.207.176:443 href · ×3
87.236.21.79:443 href · ×3
91.106.206.26:443 href · ×3
47.238.193.210:443 href · ×3
81.200.118.134:443 href · ×3
45.130.41.251:443 href · ×3
185.19.205.99:443 href · ×3
81.200.113.172:443 href · ×3
137.184.10.49:443 href · ×3
45.12.17.210:443 href · ×2
45.12.17.113:443 href · ×2
87.236.17.246:443 href · ×2
5.181.110.236:443 href · ×2
81.200.116.229:443 href · ×2
193.168.47.244:443 href · ×2
87.236.18.14:443 href · ×2
193.111.210.197:80 href · ×2
91.106.200.102:443 href · ×2
185.19.205.102:443 href · ×2
193.200.72.244:443 href · ×2
185.50.26.112:443 href · ×2
81.200.118.68:443 href · ×2
82.180.146.225:443 href · ×2
92.118.150.128:80 href · ×2
81.200.118.62:443 href · ×2
193.200.73.213:443 href · ×2
103.143.230.164:443 href · ×2
5.101.155.15:443 href · ×2
3.6.98.172:80 href · ×2
5.101.155.175:443 href · ×2
87.236.19.138:443 href · ×2
81.200.114.213:443 href · ×2
193.176.76.89:443 href · ×2
95.214.61.36:443 href · ×2
3.110.166.191:80 href · ×2
91.106.200.158:443 href · ×2
217.172.24.32:443 href · ×2
217.172.24.24:443 href · ×2
34.61.43.6:443 href · ×2
87.236.17.50:443 href · ×2
91.106.207.115:443 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.

CT-Log Evidence

Certificates from public Certificate Transparency logs whose subject or SAN names this domain — including historic certs we never observed live.

9e26970acfba5b4c… google · xenon2026h2
Subject: join.skype.com
Issuer: Microsoft TLS G2 RSA CA OCSP 10
SANs: join.skype.com
Valid: 2026-04-03 05:46:44 → 2026-09-30 05:46:44
e4e4e9268df8c2ba… google · xenon2026h2
Subject: join.skype.com
Issuer: Microsoft TLS G2 RSA CA OCSP 10
SANs: join.skype.com
Valid: 2026-04-03 05:46:44 → 2026-09-30 05:46:44
d673b9893c165c23… google · xenon2026h2
Subject: join.skype.com
Issuer: Microsoft TLS G2 RSA CA OCSP 02
SANs: join.skype.com
Valid: 2026-02-18 12:28:41 → 2026-08-17 12:28:41
cdf9a3b982aae1e4… google · xenon2026h2
Subject: join.skype.com
Issuer: Microsoft TLS G2 RSA CA OCSP 02
SANs: join.skype.com
Valid: 2026-02-18 12:28:41 → 2026-08-17 12:28:41

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 52.113.194.133 2026-05-25 21:56:50.553 2026-07-28 20:39:29.599
AAAA 2620:1ec:42::133 2026-05-25 21:56:50.553 2026-07-28 20:39:29.599
AAAA 2620:1ec:43::133 2026-05-26 07:11:25.510 2026-07-27 14:38:03.207
A 52.113.195.133 2026-06-18 07:00:33.936 2026-07-27 14:38:03.207