Check-Host.cc

IP Address IPv4

121.196.231.140

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

Run a live full scan of 121.196.231.140

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
AS37963
Alibaba (China)
Country
CN
China
Reverse DNS
PTR
Open Ports
3
Last scan

Autonomous System

ASN
AS Name
Alibaba (China)
AS Type
RIR
APNIC
Allocated
2007-09-18
Allocation status
Allocated

Geolocation

Country
CN · China
Continent
Asia
Source
MaxMind GeoLite2

Reverse DNS

PTR
Last seen

Network

RPKI

Open Ports

Port Proto Service Server Last seen
22 tcp ssh 2026-07-21 04:16:00.000
443 tcp https nginx 2026-05-26 21:52:46.000
888 tcp 2026-07-27 15:31:03.000

TLS Certificates

Port 443 998ffcca7f41…
Subject: www.666la.com
Issuer: R13
SANs: www.666la.com
Valid 2026-05-11 20:04:48 → 2026-08-09 20:04:47

Tech Stack

Detected via Wappalyzer-style rules on the HTTP response body, headers, scripts and meta tags.

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-leak candidates for this IP

When this IP serves a TLS cert for a domain that fronts behind a CDN, that domain surfaces here as an origin-leak candidate with a confidence score.

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 2026-08-02.

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.

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

Domains this host references in its HTML AND whose DNS A/AAAA record resolves back to this IP — i.e. actually hosted here.

www.666la.com DNS-confirmed

External References

Domains the body links to whose DNS does NOT resolve to this IP — usually CDN assets, embeds, or third-party services. Boilerplate (Google Fonts, jsDelivr, w3.org…) is already filtered.

cn.bing.com href · ×2
www.baidu.com href · ×2
www.douyin.com href · ×2
www.kuaishou.com href · ×2
www.xiachufang.com href · ×1
www.heywhale.com href · ×1
www.qunar.com href · ×1
civitai.com href · ×1
www.deviantart.com href · ×1
www.kuaidi100.com href · ×1
www.zhihu.com href · ×1
huggingface.co href · ×1
www.modelscope.cn href · ×1
you.com href · ×1
s.taobao.com href · ×1
search.jd.com href · ×1
lexica.art href · ×1
www.12306.cn href · ×1
huaban.com href · ×1
www.so.com href · ×1
yige.baidu.com href · ×1
www.xiangha.com href · ×1
openart.ai href · ×1
github.com href · ×1
juejin.cn href · ×1
www.sogou.com href · ×1
yz.m.sm.cn href · ×1

History

Historical change-log pending

ASN changes, prefix re-allocations, cert rotations, port-state diffs over months — accumulates as our archives grow.