Host

212.87.236.16

As of our latest check on 2026-06-07, 212.87.236.16 (Politechnika Czestochowska, AS15373, Poland) had 1 open port (443) and no known CVEs.

Known CVEs on this host

1open port

0names pointing here

0known CVEs

0known exploited

Open ports and CVEs as of our latest check of this host, 2026-06-07.

No known CVEs on this host.

Network: Politechnika Czestochowska AS15373
Open ports: 443 · at our latest check, 2026-06-07
Location: Poland PL
Hostname: bramawifi4.bg.ajd.czest.pl · reverse DNS, checked 2026-10-05
Route: 212.87.236.0/23 · announced by Politechnika Czestochowska AS15373 RPKI valid
Organisation: Politechnika Czestochowska
Registry network: UJD-NET · 212.87.234.0 - 212.87.236.255 · RIPE
Abuse contact: [email protected] · for UJD-NET
First seen: 2026-06-07 09:12 UTC
Last seen alive: 2026-06-07 09:13 UTC
Hosted domains: No host name points here

Reputation

Not a Tor relay, not a VPN or privacy relay address, and not on a current public blocklist.

Services (1)

443/tcp TLS first 2026-06-07 · last 2026-06-07

TLS: TLSv1.0
Certificate for: *.ajd.czest.pl, ajd.czest.pl
Issued by: Certum Organization Validation CA SHA2
Valid: 2020-06-08 → 2022-06-08

Raw response

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>400 Bad Request</title>
</head><body>
<h1>Bad Request</h1>
<p>Your browser sent a request that this server could not understand.<br />
Reason: You're speaking plain HTTP to an SSL-enabled server port.<br />
Instead use the HTTPS scheme to access this URL, please.<br />
<blockquote>Hint: <a href="https://bramawifi4.bg.ajd.czest.pl/"><b>https://bramawifi4.bg.ajd.czest.pl/</b></a></blockquote></p>
</body></html>

Port history

Every port that has answered a connection on this address, and when. A port is listed as open above only when a service was identified on it. Times are UTC.

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