Check-Host.cc

Domain

thinking-circular.de

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

Run a live full scan of thinking-circular.de

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
185.244.167.221
AAAA
MX
10 plesk.winning-solutions.de
NS
ns1.lumaserv.eu, ns2.lumaserv.eu
TXT
v=spf1 a mx ip4:185.244.167.195 ~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

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
thinking-circular.de 2026-07-23 12:30:15.488
www.thinking-circular.de 2026-07-23 12:30:15.488

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

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.

CT-Log Evidence

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

0c483c5d55ab4c2f… sectigo · elephant2026h1
Subject: thinking-circular.de
Issuer: R12
SANs: thinking-circular.de, www.thinking-circular.de
Valid: 2026-02-08 01:29:21 → 2026-05-09 01:29:20
ff2a46371b065ea2… sectigo · elephant2026h1
Subject: thinking-circular.de
Issuer: R13
SANs: thinking-circular.de, www.thinking-circular.de
Valid: 2025-12-10 01:29:23 → 2026-03-10 01:29:22
22b1eddcf2cde0ce… google · xenon2026h1
Subject: thinking-circular.de
Issuer: R13
SANs: thinking-circular.de, www.thinking-circular.de
Valid: 2025-10-11 01:29:22 → 2026-01-09 01:29:21
3ab2b32d336bcdba… google · xenon2026h1
Subject: thinking-circular.de
Issuer: R13
SANs: thinking-circular.de, www.thinking-circular.de
Valid: 2025-10-11 01:29:22 → 2026-01-09 01:29:21
22b1eddcf2cde0ce… cloudflare · nimbus2026
Subject: thinking-circular.de
Issuer: R13
SANs: thinking-circular.de, www.thinking-circular.de
Valid: 2025-10-11 01:29:22 → 2026-01-09 01:29:21
3ab2b32d336bcdba… sectigo · elephant2026h1
Subject: thinking-circular.de
Issuer: R13
SANs: thinking-circular.de, www.thinking-circular.de
Valid: 2025-10-11 01:29:22 → 2026-01-09 01:29:21

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
NS ns1.lumaserv.eu 2026-07-23 12:30:15.488 2026-07-23 12:30:15.488
TXT v=spf1 a mx ip4:185.244.167.195 ~all 2026-07-23 12:30:15.488 2026-07-23 12:30:15.488
MX 10 plesk.winning-solutions.de 2026-07-23 12:30:15.488 2026-07-23 12:30:15.488
A 185.244.167.221 2026-07-23 12:30:15.488 2026-07-23 12:30:15.488
NS ns2.lumaserv.eu 2026-07-23 12:30:15.488 2026-07-23 12:30:15.488