Check-Host.cc

Domain

app.element.io

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

Run a live full scan of app.element.io

On-demand: ports, banners, TLS, tech-stack, subdomains and origin/IP-leak detection. Results are shared publicly for everyone to link to.

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Hosting IPs
4
A/AAAA targets
Subdomains
CT + scan + body
Record Types
2
seen in DNS
Observed Certs
3
in our scans

DNS Records

A
104.20.39.237, 172.66.165.154
AAAA
2606:4700:10::6814:27ed, 2606:4700:10::ac42:a59a
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.

64.227.121.78:443 href · ×4
38.242.243.22:443 href · ×3
188.245.42.251:443 href · ×3
172.232.239.251:8080 href · ×2
85.137.251.101:443 href · ×2
45.114.62.235:443 href · ×2
104.36.80.175:443 href · ×2
193.175.167.217:443 href · ×2
82.165.29.151:443 href · ×2
185.200.177.116:8080 href · ×2
85.198.100.3:8080 href · ×2
31.129.52.4:443 href · ×2
70.59.88.33:443 href · ×2
152.42.196.80:443 href · ×2
82.165.195.111:443 href · ×2
92.101.122.231:443 href · ×2
154.49.169.93:443 href · ×2
194.87.206.62:443 href · ×2
140.82.39.178:443 href · ×2
185.175.47.243:8080 href · ×2
37.46.19.30:80 href · ×2
109.71.242.30:443 href · ×2
80.81.17.52:443 href · ×2
93.230.49.185:80 href · ×2
54.39.147.51:443 href · ×2
89.179.241.154:443 href · ×2
195.54.42.252:443 href · ×2
95.217.70.181:443 href · ×2
188.68.52.43:443 href · ×2
168.222.140.152:443 href · ×2
45.142.3.68:8080 href · ×2
52.65.173.126:443 href · ×2
95.163.230.226:443 href · ×2
51.250.8.80:443 href · ×2
51.178.106.149:443 href · ×2
176.12.65.234:443 href · ×2
31.59.170.129:8080 href · ×2
209.38.91.108:443 href · ×2
79.174.77.32:443 href · ×2
66.97.40.120:443 href · ×2
82.66.57.59:8080 href · ×2
77.239.98.155:8443 href · ×2
103.116.198.196:8008 href · ×2
185.155.97.90:443 href · ×2
136.243.146.77:443 href · ×2
138.124.124.213:443 href · ×2
194.76.67.15:443 href · ×2
217.154.166.41:443 href · ×2
91.99.190.4:443 href · ×2
195.64.106.171:443 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.

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 172.66.165.154 2026-05-25 21:56:50.553 2026-07-28 19:22:00.900
AAAA 2606:4700:10::ac42:a59a 2026-05-25 21:56:50.553 2026-07-28 19:22:00.900
A 104.20.39.237 2026-05-25 21:56:50.553 2026-07-28 19:22:00.900
AAAA 2606:4700:10::6814:27ed 2026-05-25 21:56:50.553 2026-07-28 19:22:00.900