Check-Host.cc

Domain

www.backblaze.com

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

Run a live full scan of www.backblaze.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
4
A/AAAA targets
Subdomains
CT + scan + body
Record Types
2
seen in DNS
Observed Certs
in our scans

DNS Records

A
104.17.5.3, 104.17.6.3
AAAA
2606:4700::6811:503, 2606:4700::6811:603
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.

23.19.75.92:443 href · ×3
198.23.254.135:443 href · ×2
87.98.235.95:443 href · ×2
172.236.156.152:443 href · ×1
75.119.205.173:443 href · ×1
80.190.131.157:443 href · ×1
47.151.40.143:80 href · ×1
45.77.221.68:443 href · ×1
34.162.170.206:443 href · ×1
44.245.26.14:443 href · ×1
13.49.135.48:80 href · ×1
44.229.149.28:443 href · ×1
43.129.20.214:443 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.

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::6811:603 2026-05-26 10:27:10.433 2026-07-23 07:18:54.603
A 104.17.6.3 2026-05-26 10:27:10.433 2026-07-23 07:18:54.603
A 104.17.5.3 2026-05-26 10:27:10.433 2026-07-23 07:18:54.603
AAAA 2606:4700::6811:503 2026-05-26 10:27:10.433 2026-07-23 07:18:54.603