Check-Host.cc

Try 1.1.1.1 AS13335 check-host.cc /country/de /tld/cc
IP Address IPv4

157.255.4.76

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

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On-demand: ports, banners, TLS, tech-stack, subdomains and origin/IP-leak detection. Results are shared publicly for everyone to link to.

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ASN
AS17816
CHINA169-GZ
Country
CN
China
Reverse DNS
—
PTR
Open Ports
2
Last scan

Autonomous System

ASN
AS17816
AS Name
CHINA169-GZ
AS Type
—
RIR
APNIC
Allocated
2001-07-11
Allocation status
Allocated

Geolocation

Country
CN · China
Continent
Asia
Source
MaxMind GeoLite2

Reverse DNS

PTR
—
Last seen
—

Network

Prefix
157.255.0.0/16
RPKI
—

Open Ports

Port Proto Service Server Last seen
80 tcp http Wwebsvr 2026-07-26 23:00:09.000
443 tcp https Wwebsvr 2026-07-19 02:18:17.000

TLS Certificates

Port 443 d39e606087c0…
Subject: *.exmail.qq.com
Issuer: DigiCert Secure Site OV G2 TLS CN RSA4096 SHA256 2022 CA1
SANs: *.exmail.qq.com, boss.exmailgz.com, cloudmx.qq.com, exmail.qmail.com, exmail.qq.com, exmail.weixin.qq.com, exmail.work.weixin.qq.com, m.exmail.qmail.com, mxbiz1.qq.com, mxbiz2.qq.com, support.exmailgz.com
Valid 2026-05-11 00:00:00 → 2026-11-25 23:59:59

Tech Stack

Wappalyzer fingerprinting pending

HTTP-body analysis identifies web frameworks, CMS platforms, analytics, JS libraries and server-side languages from this host.

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.

exmailgz.com 95% confidence
behind AS132203 cert d39e606087c0… · cert d39e6060… served by 157.255.4.76 (AS17816) carries SAN boss.exmailgz.com which currently resolves through Tencent (AS132203) at 43.135.105.139, 43.154.240.243
qmail.com 95% confidence
behind AS132203 cert d39e606087c0… · cert d39e6060… served by 157.255.4.76 (AS17816) carries SAN exmail.qmail.com which currently resolves through Tencent (AS132203) at 43.154.252.31, 43.155.124.18, 43.154.252.250
qq.com 95% confidence
behind AS132203 cert d39e606087c0… · cert d39e6060… served by 157.255.4.76 (AS17816) carries SAN exmail.qq.com which currently resolves through Tencent (AS132203) at 43.154.252.31, 43.155.124.18, 43.154.252.250

Multi-Vantage Check

Reachability accrued passively from real user-triggered checks across our 65+ probe nodes. Run a live check to add fresh data.

ICMP responsive This IP replied to our global ICMP sweep — last confirmed 2026-07-31.

No accumulated reachability data yet

Reachability accrues from real user-triggered checks. Trigger a Ping or HTTP check from our 65+ probe nodes to contribute the first data point.

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Web Pages

Port Page title Status Flags
80 403 Forbidden 403
443 403 Forbidden 403

Threat Intelligence

No threat-intel matches

This IP doesn't appear in any of the feeds we mirror (Tor exits, FireHOL Level 1-3, Spamhaus DROP/EDROP, URLhaus, OpenPhish). Absence here doesn't prove the IP is clean — it just means none of our public-feed sources flag it.

Co-Hosted Domains

No DNS-confirmed domains yet

We cross-reference body-cited domains against our DNS resolver records. Confirmations appear here once both sides have data for the same name.

External References

No external references found yet

As HTML bodies get banner-grabbed, references to external domains land here.

History

First observed
2026-07-19 02:18
Last observed
2026-07-26 23:00
Scan observations
4

The full change-log (ASN moves, cert rotations, port-state diffs) accumulates as our archives grow.