178.20.89.21 — 3 open ports, 40 known CVEs, network DNS:NET Internet Service GmbH

Known CVEs on this host

3open ports

0names pointing here

40known CVEs

0known exploited

Open ports and CVEs as of our latest check of this host, 2026-06-04.

CVEs by severity: CRITICAL 1 HIGH 11 MEDIUM 16 LOW 12

A match is an indication, not proof: it is based on the software version a service reported, and fixes are often backported without changing the version. See the list

Network: DNS:NET Internet Service GmbH AS15366
Open ports: 22, 80, 443 · at our latest check, 2026-06-04
Location: Germany DE
Route: 178.20.88.0/21 · announced by DNS:NET Internet Service GmbH AS15366 no RPKI authorisation
Organisation: DNS:NET Internet Service GmbH · Network service provider (transit)
Registry network: DNSNET-NET3 · 178.20.88.0 - 178.20.91.255 · RIPE
Abuse contact: [email protected] · for DNSNET-NET3
First seen: 2026-06-04 03:18 UTC
Last seen alive: 2026-06-04 03:18 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 (3)

22/tcp SSH OpenSSH_8.2 40 CVEs first 2026-06-04 · last 2026-06-04

Server: SSH-2.0-OpenSSH_8.2
Host key: ssh-ed25519 58b0225d35d8e647…

Raw response

SSH-2.0-OpenSSH_8.2

80/tcp HTTP nginx first 2026-06-04 · last 2026-06-04

Status: 200 OK
Title: Hello! Welcome to Synology Web Station!
Server: nginx

Raw response

HTTP/1.1 200 OK
Server: nginx
Date: Thu, 04 Jun 2026 03:18:11 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
Keep-Alive: timeout=20
Vary: Accept-Encoding
Last-Modified: Wed, 27 Jan 2021 10:40:57 GMT
ETag: W/"60114339-5c2"
Content-Encoding: gzip

2cf
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443/tcp TLS first 2026-06-04 · last 2026-06-04

TLS: TLSv1.2
Certificate for: synology
Issued by: Synology Inc. CA
Valid: 2025-09-13 → 2026-09-14

Raw response

HTTP/1.1 400 Bad Request
Server: nginx
Date: Thu, 04 Jun 2026 03:18:11 GMT
Content-Type: text/html
Content-Length: 650
Connection: close

<html>
<head><title>400 The plain HTTP request was sent to HTTPS port</title></head>
<body>
<center><h1>400 Bad Request</h1></center>
<center>The plain HTTP request was sent to HTTPS port</center>
<hr><center>nginx</center>
</body>
</html>
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Vulnerabilities

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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