217.91.83.200 — 1 open port, 0 known CVEs, network Deutsche Telekom AG

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, 2026-06-09.

No known CVEs on this host.

Network: Deutsche Telekom AG AS3320
Open ports: 443 · at our latest check, 2026-06-09
Location: Hannover, DE-NI · Germany DE
Hostname: mail.stadthotel-muenster.de · reverse DNS, checked 2026-10-05
Route: 217.80.0.0/12 · announced by Deutsche Telekom AG AS3320 RPKI valid
Organisation: Deutsche Telekom AG · Network service provider (transit)
Registry network: DTAG-STATIC01 · 217.91.0.0 - 217.91.127.255 · RIPE
Abuse contact: [email protected] · for DTAG-STATIC01
First seen: 2026-06-08 21:15 UTC
Last seen alive: 2026-06-09 00:20 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 2026-06-08 · last 2026-06-09

TLS: TLSv1.2
Certificate for: www.stadthotel-muenster.de, owa.stadthotel-muenster.de, mail.stadthotel-muenster.de, autodiscover.stadthotel-muenster.de, stadthotel-muenster.de
Issued by: GlobalSign GCC R3 DV TLS CA 2020
Valid: 2026-01-27 → 2027-02-28

Raw response

HTTP/1.1 400 Bad Request
Date: Tue, 09 Jun 2026 00:19:56 GMT
Server: Apache
Content-Length: 362
Connection: close
Content-Type: text/html; charset=iso-8859-1

<!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 />
</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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