Check-Host.cc
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Domain

4nz.workers.dev

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

DNS Check HTTP Check Run Full Scan .dev TLD

Run a live full scan of 4nz.workers.dev

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
11
CT + scan + body
Record Types
1
seen in DNS
Observed Certs
16
in our scans

DNS Records

A
—
AAAA
—
MX
—
NS
joselyn.ns.cloudflare.com, maxim.ns.cloudflare.com
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

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
gentle-hat-02a3.4nz.workers.dev
2606:4700:3036::6815:27e3 104.21.39.227 172.67.149.128 2606:4700:3034::ac43:9580
2026-08-24 19:39:55.505
worker-frosty-surf-039c.4nz.workers.dev
2606:4700:3034::ac43:9580 104.21.39.227 172.67.149.128 2606:4700:3036::6815:27e3
2026-08-24 02:33:50.372
4nz.workers.dev DNS pending —

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.

71dea7db099314d7… cloudflare · nimbus2026
Subject: 4nz.workers.dev
Issuer: Cloudflare TLS Issuing ECC CA 4
SANs: 4nz.workers.dev, *.4nz.workers.dev
Valid: 2026-08-27 12:33:03 → 2026-11-23 23:16:16
d877f0d22daeaddb… cloudflare · nimbus2026
Subject: 4nz.workers.dev
Issuer: WE1
SANs: 4nz.workers.dev, *.4nz.workers.dev
Valid: 2026-08-26 06:03:00 → 2026-11-24 07:02:58
ec22c72b7be636bd… google · xenon2026h2
Subject: 4nz.workers.dev
Issuer: WE1
SANs: 4nz.workers.dev, *.4nz.workers.dev
Valid: 2026-08-26 05:19:29 → 2026-11-24 06:17:08
62a9bbc35fb9a5ac… google · argon2026h2
Subject: 4nz.workers.dev
Issuer: WE1
SANs: 4nz.workers.dev, *.worker-frosty-surf-039c.4nz.workers.dev
Valid: 2026-08-07 13:24:57 → 2026-11-05 14:24:37
ddc0ba735a790a06… google · argon2026h2
Subject: 4nz.workers.dev
Issuer: WR1
SANs: 4nz.workers.dev, *.worker-frosty-surf-039c.4nz.workers.dev
Valid: 2026-08-07 13:24:30 → 2026-11-05 14:24:02
75d8a345064309b2… google · xenon2026h2
Subject: 4nz.workers.dev
Issuer: WE1
SANs: 4nz.workers.dev, *.worker-frosty-surf-039c.4nz.workers.dev
Valid: 2026-08-07 13:06:13 → 2026-11-05 14:06:06
48f6a42a8ea2325a… google · xenon2026h2
Subject: 4nz.workers.dev
Issuer: WR1
SANs: 4nz.workers.dev, *.worker-frosty-surf-039c.4nz.workers.dev
Valid: 2026-08-07 13:06:00 → 2026-11-05 14:02:53
1362fa68e454c518… google · xenon2026h2
Subject: 4nz.workers.dev
Issuer: WE1
SANs: 4nz.workers.dev, *.gentle-hat-02a3.4nz.workers.dev
Valid: 2026-08-07 06:15:45 → 2026-11-05 07:15:42
0f24a077f0d33102… digicert · wyvern2026h2
Subject: 4nz.workers.dev
Issuer: WE1
SANs: 4nz.workers.dev, *.gentle-hat-02a3.4nz.workers.dev
Valid: 2026-08-07 06:00:18 → 2026-11-05 06:59:57
d1d2b1bccc0a01ab… google · argon2026h2
Subject: 4nz.workers.dev
Issuer: WR1
SANs: 4nz.workers.dev, *.gentle-hat-02a3.4nz.workers.dev
Valid: 2026-08-07 05:59:51 → 2026-11-05 06:57:22
22c796671d9af92e… google · xenon2026h2
Subject: 4nz.workers.dev
Issuer: WE1
SANs: 4nz.workers.dev, *.4nz.workers.dev
Valid: 2026-06-28 03:16:58 → 2026-09-26 04:14:13
0f4f4789e979cd97… cloudflare · nimbus2026
Subject: 4nz.workers.dev
Issuer: Cloudflare TLS Issuing ECC CA 4
SANs: 4nz.workers.dev, *.4nz.workers.dev
Valid: 2026-06-11 23:05:33 → 2026-09-08 03:40:35
d07e522a1d7d5b43… google · xenon2026h2
Subject: 4nz.workers.dev
Issuer: WR1
SANs: 4nz.workers.dev, *.worker-frosty-surf-039c.4nz.workers.dev
Valid: 2026-06-09 12:04:13 → 2026-09-07 13:03:12
152a3c11093ee5e0… cloudflare · nimbus2026
Subject: 4nz.workers.dev
Issuer: WE1
SANs: 4nz.workers.dev, *.worker-frosty-surf-039c.4nz.workers.dev
Valid: 2026-06-09 11:53:13 → 2026-09-07 12:52:57
0a1506b4ca4ddd57… google · xenon2026h2
Subject: 4nz.workers.dev
Issuer: WE1
SANs: 4nz.workers.dev, *.gentle-hat-02a3.4nz.workers.dev
Valid: 2026-06-09 05:30:38 → 2026-09-07 06:30:07
4593dec875807e1a… google · xenon2026h2
Subject: 4nz.workers.dev
Issuer: WR1
SANs: 4nz.workers.dev, *.gentle-hat-02a3.4nz.workers.dev
Valid: 2026-06-09 05:30:02 → 2026-09-07 06:27:25

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 joselyn.ns.cloudflare.com 2026-08-09 13:58:21.791 2026-08-29 18:45:50.807
NS maxim.ns.cloudflare.com 2026-08-09 13:58:21.791 2026-08-29 18:45:50.807