Check-Host.cc

Try 1.1.1.1 AS13335 check-host.cc /country/de /tld/cc
Domain

21re.de

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

DNS Check HTTP Check Run Full Scan .de TLD

Run a live full scan of 21re.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
20
A/AAAA targets
Subdomains
4
CT + scan + body
Record Types
5
seen in DNS
Observed Certs
5
in our scans

DNS Records

A
18.238.243.103, 18.238.243.38, 18.238.243.63, 18.238.243.96, 18.66.248.127, 18.66.248.35, 18.66.248.75, 18.66.248.99
AAAA
—
MX
1 aspmx.l.google.com
NS
ns-1350.awsdns-40.org, ns-2006.awsdns-58.co.uk, ns-424.awsdns-53.com, ns-785.awsdns-34.net
TXT
apple-domain-verification=d6VZNdvnj1G3GBAC, sophos-domain-verification=51a3c792430b5a5207ccce78594de68bcd7621c1bc342d3bd254c84d0cb06c28
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
21re.de
99.84.152.14 18.238.243.63 18.238.243.38 99.84.152.120 +16
2026-06-02 16:28:32.095

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.

645e249f7c9972b4… cloudflare · nimbus2026
Subject: 21re.de
Issuer: Amazon RSA 2048 M03
SANs: 21re.de, *.21re.de
Valid: 2025-07-21 00:00:00 → 2026-08-19 23:59:59
c5016289a89616a2… cloudflare · nimbus2026
Subject: 21re.de
Issuer: Amazon RSA 2048 M03
SANs: 21re.de, *.21re.de
Valid: 2025-07-21 00:00:00 → 2026-08-19 23:59:59

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 99.84.152.120 2026-05-31 18:44:51.117 2026-06-02 16:28:32.095
NS ns-1350.awsdns-40.org 2026-05-31 18:44:51.117 2026-06-02 16:28:32.095
SRV _sipfederationtls._tcp 100 1 5061 sipfed.online.lync.com 2026-05-31 18:44:51.117 2026-06-02 16:28:32.095
A 99.84.152.14 2026-05-31 18:44:51.117 2026-06-02 16:28:32.095
NS ns-424.awsdns-53.com 2026-05-31 18:44:51.117 2026-06-02 16:28:32.095
NS ns-2006.awsdns-58.co.uk 2026-05-31 18:44:51.117 2026-06-02 16:28:32.095
A 99.84.152.122 2026-05-31 18:44:51.117 2026-06-02 16:28:32.095
NS ns-785.awsdns-34.net 2026-05-31 18:44:51.117 2026-06-02 16:28:32.095
A 99.84.152.47 2026-05-31 18:44:51.117 2026-06-02 16:28:32.095
TXT apple-domain-verification=d6VZNdvnj1G3GBAC 2026-05-31 18:44:51.117 2026-06-02 16:28:32.095
TXT sophos-domain-verification=51a3c792430b5a5207ccce78594de68bcd7621c1bc342d3bd254c84d0cb06c28 2026-05-31 18:44:51.117 2026-06-02 16:28:32.095
MX 1 aspmx.l.google.com 2026-05-31 18:44:51.117 2026-06-02 16:28:32.095
A 18.238.243.96 2026-05-31 18:48:47.514 2026-06-02 16:19:21.757
A 18.238.243.63 2026-05-31 18:48:47.514 2026-06-02 16:19:21.757
A 18.238.243.103 2026-05-31 18:48:47.514 2026-06-02 16:19:21.757
A 18.238.243.38 2026-05-31 18:48:47.514 2026-06-02 16:19:21.757
A 3.162.38.126 2026-06-01 19:24:21.724 2026-06-01 19:24:21.724
A 3.162.38.20 2026-06-01 19:24:21.724 2026-06-01 19:24:21.724
A 3.162.38.82 2026-06-01 19:24:21.724 2026-06-01 19:24:21.724
A 3.162.38.75 2026-06-01 19:24:21.724 2026-06-01 19:24:21.724
A 18.66.248.35 2026-06-01 23:39:14.155 2026-06-02 04:27:17.293
A 18.66.248.127 2026-06-01 23:39:14.155 2026-06-02 04:27:17.293
A 18.66.248.99 2026-06-01 23:39:14.155 2026-06-02 04:27:17.293
A 18.66.248.75 2026-06-01 23:39:14.155 2026-06-02 04:27:17.293
A 99.86.240.25 2026-06-02 00:52:35.910 2026-06-02 00:52:35.910
A 99.86.240.90 2026-06-02 00:52:35.910 2026-06-02 00:52:35.910
A 99.86.240.65 2026-06-02 00:52:35.910 2026-06-02 00:52:35.910
A 99.86.240.111 2026-06-02 00:52:35.910 2026-06-02 00:52:35.910