Check-Host.cc

Domain

1off.kr

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

Run a live full scan of 1off.kr

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
8
A/AAAA targets
Subdomains
2
CT + scan + body
Record Types
4
seen in DNS
Observed Certs
3
in our scans

DNS Records

A
3.173.161.123, 3.173.161.23, 3.173.161.53, 3.173.161.69
AAAA
MX
10 aspmx.daum.net, 20 alt.aspmx.daum.net
NS
ens1.hostcocoa.com, ens2.hostcocoa.com, ens3.hostcocoa.com, ens4.hostcocoa.com
TXT
v=spf1 include:_spf.daum.net ~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
www.1off.kr 2026-06-03 02:39:30.542
1off.kr 2026-06-03 02:39:30.542

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.

95ec7a583759b7ff… digicert · wyvern2026h2
Subject: 1off.kr
Issuer: Amazon RSA 2048 M02
SANs: 1off.kr, *.1off.kr
Valid: 2025-07-10 00:00:00 → 2026-08-08 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
NS ens4.hostcocoa.com 2026-06-02 23:16:52.385 2026-06-03 02:39:30.542
A 3.173.161.123 2026-06-02 23:16:52.385 2026-06-03 02:39:30.542
MX 20 alt.aspmx.daum.net 2026-06-02 23:16:52.385 2026-06-03 02:39:30.542
NS ens3.hostcocoa.com 2026-06-02 23:16:52.385 2026-06-03 02:39:30.542
A 3.173.161.53 2026-06-02 23:16:52.385 2026-06-03 02:39:30.542
NS ens2.hostcocoa.com 2026-06-02 23:16:52.385 2026-06-03 02:39:30.542
A 3.173.161.69 2026-06-02 23:16:52.385 2026-06-03 02:39:30.542
TXT v=spf1 include:_spf.daum.net ~all 2026-06-02 23:16:52.385 2026-06-03 02:39:30.542
NS ens1.hostcocoa.com 2026-06-02 23:16:52.385 2026-06-03 02:39:30.542
A 3.173.161.23 2026-06-02 23:16:52.385 2026-06-03 02:39:30.542
MX 10 aspmx.daum.net 2026-06-02 23:16:52.385 2026-06-03 02:39:30.542