Check-Host.cc

IP Address IPv4

210.41.219.248

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

Run a live full scan of 210.41.219.248

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
AS4538
CERNET-CN
Country
CN
China
Reverse DNS
ipis.cdutcm.edu.cn
PTR
Open Ports
2
Last scan

Autonomous System

ASN
AS Name
CERNET-CN
AS Type
RIR
APNIC
Allocated
2002-08-01
Allocation status
Allocated

Geolocation

Country
CN · China
Continent
Asia
Source
MaxMind GeoLite2

Reverse DNS

Last seen
2026-07-19 23:49:18

Network

RPKI

Open Ports

Port Proto Service Server Last seen
80 tcp http Apache 2026-07-19 23:48:20.000
443 tcp https Apache 2026-05-26 06:49:12.000

TLS Certificates

Port 443 c03a9885b7e7…
Subject: *.cdutcm.edu.cn
Issuer: GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1
SANs: *.cdutcm.edu.cn, cdutcm.edu.cn
Valid 2025-04-29 00:00:00 → 2026-05-22 23:59:59

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.

Hosted Domains

1 domain resolve (A-record) to this IP.

Multi-Vantage Check

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

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.

Web Pages

Port Page title Status Flags
80 301 Moved Permanently 301
443 成都中医大学知识产权信息服务中心 200

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.

ipis.cdutcm.edu.cn 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.

www.gov.cn href · ×8
www.cnipa.gov.cn href · ×8
sbj.cnipa.gov.cn href · ×3
ggfw.cnipa.gov.cn href · ×3
reexam.cnipa.gov.cn href · ×2
dbnav.lib.pku.edu.cn href · ×2
epub.cnipa.gov.cn href · ×2
www.wipo.int href · ×2
www2.scut.edu.cn href · ×2
lib.qdu.edu.cn href · ×1
www.innojoy.com href · ×1
www.cnipsun.com href · ×1
lib.hnu.edu.cn href · ×1
ips.uestc.edu.cn href · ×1
lib.jiangnan.edu.cn href · ×1
library.sysu.edu.cn href · ×1
lib.seu.edu.cn href · ×1
www.lib.hust.edu.cn href · ×1
www.lib.whu.edu.cn href · ×1
www.gpic.gd.cn href · ×1
lib.cqu.edu.cn href · ×1
lib.cdutcm.edu.cn href · ×1
patft.uspto.gov href · ×1
lib.njtu.edu.cn href · ×1
lib.bjut.edu.cn href · ×1
wap.moe.gov.cn href · ×1
www.ige.ch href · ×1
lib.sdust.edu.cn href · ×1
lib.csu.edu.cn href · ×1
www.ifla.org href · ×1
app.innography.com href · ×1
lib.ecust.edu.cn href · ×1
www.uspto.gov href · ×1
libweb.zju.edu.cn href · ×1
lib.cumt.edu.cn href · ×1
epub.sipo.gov.cn href · ×1
www.patent.gov.uk href · ×1
www.ic.gc.ca href · ×1
ipisc.imau.edu.cn href · ×1
www.kipris.or.kr href · ×1
www.lib.pku.edu.cn href · ×1
www.zldsj.com href · ×1
chinaip.sipo.gov.cn href · ×1
www.lib.szu.edu.cn href · ×1
scifinder.cas.org href · ×1
lib.shzu.edu.cn href · ×1
lib.bit.edu.cn href · ×1
library.ysu.edu.cn href · ×1
cpquery.sipo.gov.cn href · ×1
www.cutech.edu.cn href · ×1
library.ncepu.edu.cn href · ×1
www.patentstar.cn href · ×1
kns.cnki.net href · ×1
lib.nwsuaf.edu.cn href · ×1
www.inpi.fr href · ×1
search.cnipr.com href · ×1
www.dpma.de href · ×1
cpquery.cnipa.gov.cn href · ×1
www.lib.tyut.edu.cn href · ×1
www.soopat.com href · ×1
www.jpo.go.jp href · ×1
ip.fzu.edu.cn href · ×1
lib.tsinghua.edu.cn href · ×1
www.lib.cau.edu.cn href · ×1

History

First observed
2026-05-26 06:49
Last observed
2026-07-19 23:48
Scan observations
4

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