IP Address IPv4

133.6.183.83

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

Ping from 65 Nodes HTTP from 65 Nodes Run Full Scan

Run a live full scan of 133.6.183.83

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

Reverse DNS

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PTR

Open Ports

Last scan

Autonomous System

ASN

AS17687

AS Name

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AS Type

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RIR

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Allocated

—

Geolocation

Country

JP · Japan

Continent

Asia

Source

MaxMind GeoLite2

Reverse DNS

PTR

—

Last seen

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Network

Prefix

133.6.0.0/16

RPKI

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Open Ports

Port	Proto	Service	Server	Last seen
443	tcp	https	Apache	2026-07-18 07:26:09.000

TLS Certificates

Port 443 0888c7166214…

Subject: www.kyodo-sankaku.provost.nagoya-u.ac.jp

Issuer: NII Open Domain CA - G8 RSA

SANs: henkan.mirai.nagoya-u.ac.jp, incubation.aip.nagoya-u.ac.jp, novi-a.med.nagoya-u.ac.jp, pcl.has.env.nagoya-u.ac.jp, spintronics.mp.pse.nagoya-u.ac.jp, www.kyodo-sankaku.provost.nagoya-u.ac.jp

Valid 2026-03-03 02:28:27 → 2027-04-03 02:28:27

Tech Stack

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

Google Analytics Google Hosted Libraries Google Tag Manager OWL Carousel Twitter jQuery

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.

Domain
pcl.has.env.nagoya-u.ac.jp

Showing 1 of 1

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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.

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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.

pcl.has.env.nagoya-u.ac.jp 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.

xml.apache.org href · ×8

sites.google.com href · ×6

dx.doi.org href · ×5

www.nagoya-u.ac.jp href · ×3

profs.provost.nagoya-u.ac.jp href · ×3

twitter.com href · ×2

doi.org href · ×2

researchmap.jp href · ×2

s.w.org href · ×2

www.env.nagoya-u.ac.jp href · ×1

has.env.nagoya-u.ac.jp href · ×1

api.w.org href · ×1

History

First observed

2026-07-18 07:26

Last observed

2026-07-18 07:26

Scan observations

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