Check-Host.cc

IP Address IPv4

103.74.84.31

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

Run a live full scan of 103.74.84.31

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
Not yet attributed
Country
BD
Bangladesh
Reverse DNS
PTR
Open Ports
2
Last scan

Autonomous System

ASN
AS Name
AS Type
RIR
APNIC
Allocated
2016-09-06
Allocation status
Allocated

Geolocation

Country
BD · Bangladesh
Continent
Asia
Source
MaxMind GeoLite2

Reverse DNS

PTR
Last seen

Network

Prefix
RPKI

Open Ports

Port Proto Service Server Last seen
443 tcp https Apache/2.4.52 (Ubuntu) 2026-06-15 01:11:57.000
2000 tcp 2026-06-23 00:17:25.000

TLS Certificates

Port 443 4591841b966b…
Subject: library.kuet.ac.bd
Issuer: YR1
SANs: library.kuet.ac.bd
Valid 2026-06-05 04:20:15 → 2026-09-03 04:20:14

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.

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.

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.

library.kuet.ac.bd 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.

link.springer.com href · ×3
www.kuet.ac.bd href · ×2
www.jstor.org href · ×2
www.emerald.com href · ×2
dspace.kuet.ac.bd href · ×2
www.asce.org href · ×2
doaj.org href · ×2
www.asme.org href · ×2
www.research4life.org href · ×1
www.wileyindia.com href · ×1
web.a.ebscohost.com href · ×1
www.ieee.org href · ×1
ieeexplore.ieee.org href · ×1
www.cambridge.org href · ×1
global.oup.com href · ×1
www.bir.org.uk href · ×1
www.degruyter.com href · ×1
iopscience.iop.org href · ×1
www.nature.com href · ×1
www.springer.com href · ×1
about.muse.jhu.edu href · ×1
www.mheducation.co.in href · ×1
journals.aps.org href · ×1
www.taylorfrancis.com href · ×1
elibrary.asabe.org href · ×1
www.osapublishing.org href · ×1
portal.kuet.ac.bd href · ×1
www.sciencedirect.com href · ×1
www.banglajol.info href · ×1
www.doabooks.org href · ×1
aip.scitation.org href · ×1

History

First observed
2026-06-15 01:11
Last observed
2026-06-23 00:17
Scan observations
4

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