Check-Host.cc

Domain

testrtc.com

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

Run a live full scan of testrtc.com

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

DNS Records

A
104.21.64.57, 172.67.176.97
AAAA
2606:4700:3030::6815:4039, 2606:4700:3034::ac43:b061, 2606:4700:3036::ac43:b061, 2606:4700:3037::6815:4039
MX
12 route2.mx.cloudflare.net, 27 route3.mx.cloudflare.net, 65 route1.mx.cloudflare.net
NS
rosa.ns.cloudflare.com, sam.ns.cloudflare.com
TXT
_1wgeun2idbof6fkc77emj8g3f1qnko8, facebook-domain-verification=d6y7ymylztdoc50guhxnmqi3nnd2op, google-site-verification=_kE3m_aM1hL4pJrYqrjqbpkiKAZ_dBHDZDt8U_Rqtvo, v=spf1 include:_spf.mx.cloudflare.net include:_spf.google.com include:sendgrid.net include:mailgun.org include:mail.zendesk.com ~all
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

Subject: rcv-syd01a.speed.testrtc.com
Issuer: YE1
SANs: rcv-syd01a.speed.testrtc.com
Subject: *.nettest.testrtc.com
Issuer: YR2
SANs: *.nettest.testrtc.com

IPs Citing This Domain

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

5.188.78.139:443 href · ×3
85.214.96.104:443 href · ×3
64.227.171.249:443 href · ×3
20.254.68.27:443 href · ×3
91.195.56.52:443 href · ×3
91.218.112.180:443 href · ×3
103.112.5.7:443 href · ×2
199.127.109.105:443 href · ×2
95.163.232.110:443 href · ×2
95.217.190.46:443 href · ×2
51.75.35.60:443 href · ×2
147.229.177.169:443 href · ×2
172.233.178.53:443 href · ×2
94.237.75.225:443 href · ×2
51.159.180.238:443 href · ×2
49.13.126.153:443 href · ×2
35.221.185.154:443 href · ×2
49.12.107.104:443 href · ×2
176.118.198.95:443 href · ×2
52.58.38.67:443 href · ×2
185.227.156.141:443 href · ×2
2.27.86.253:443 href · ×2
49.12.237.179:443 href · ×2
194.94.96.174:443 href · ×2
143.110.173.237:443 href · ×2
217.150.197.96:443 href · ×2
141.11.164.175:443 href · ×2
195.46.130.167:443 href · ×2
72.35.44.52:443 href · ×2
185.162.10.229:443 href · ×2
185.26.104.171:443 href · ×2
107.170.65.5:443 href · ×2
51.77.146.96:443 href · ×2
5.9.44.80:443 href · ×2
161.35.199.142:443 href · ×2
91.99.100.182:443 href · ×2
101.44.39.138:443 href · ×2
213.108.202.133:443 href · ×2
109.172.115.138:443 href · ×2
14.238.93.188:443 href · ×2
170.64.221.122:443 href · ×2
45.141.110.196:443 href · ×2
62.109.15.231:443 href · ×2
82.165.138.129:443 href · ×2
9.169.64.217:443 href · ×2
193.180.213.208:8443 href · ×2
91.99.192.90:443 href · ×2
158.69.130.22:443 href · ×2
91.26.234.76:443 href · ×2
145.220.6.30:443 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
AAAA 2606:4700:3037::6815:4039 2026-05-25 21:56:50.553 2026-06-19 07:48:00.111
A 104.21.64.57 2026-05-25 21:56:50.553 2026-07-28 19:48:54.308
A 172.67.176.97 2026-05-25 21:56:50.553 2026-07-28 19:48:54.308
AAAA 2606:4700:3036::ac43:b061 2026-05-25 21:56:50.553 2026-06-19 07:48:00.111
NS sam.ns.cloudflare.com 2026-05-26 00:03:35.658 2026-07-28 19:48:54.308
MX 65 route1.mx.cloudflare.net 2026-05-26 00:03:35.658 2026-07-28 19:48:54.308
NS rosa.ns.cloudflare.com 2026-05-26 00:03:35.658 2026-07-28 19:48:54.308
MX 27 route3.mx.cloudflare.net 2026-05-26 00:03:35.658 2026-07-28 19:48:54.308
TXT facebook-domain-verification=d6y7ymylztdoc50guhxnmqi3nnd2op 2026-05-26 00:03:35.658 2026-07-28 19:48:54.308
MX 12 route2.mx.cloudflare.net 2026-05-26 00:03:35.658 2026-07-28 19:48:54.308
TXT v=spf1 include:_spf.mx.cloudflare.net include:_spf.google.com include:sendgrid.net include:mailgun.org include:mail.zendesk.com ~all 2026-05-26 00:03:35.658 2026-07-28 19:48:54.308
TXT google-site-verification=_kE3m_aM1hL4pJrYqrjqbpkiKAZ_dBHDZDt8U_Rqtvo 2026-05-26 00:03:35.658 2026-07-28 19:48:54.308
TXT _1wgeun2idbof6fkc77emj8g3f1qnko8 2026-06-15 11:12:19.839 2026-07-28 19:48:54.308
AAAA 2606:4700:3034::ac43:b061 2026-06-19 08:22:28.524 2026-07-28 19:48:54.308
AAAA 2606:4700:3030::6815:4039 2026-06-19 08:22:28.524 2026-07-28 19:48:54.308