sys2.de

sys2.de serves a website of its own over HTTPS. It answers on IPv4 only, with a valid TLS certificate and MX records for mail.

42 other domains share an IP address with it, and 17 domains redirect to it.

The most recent crawl returned the page title “SysQuadrat - Linux Administration Wartung” and 9,371 bytes of HTML.

Domain properties

Property	Value	Explanation
Top-level domain	.de	Statistics for all domains we know under this TLD.
Has website	yes	A website is hosted under the domain, which does not redirect to an external domain.
Has MX-record	yes	The domain has an MX record.
External redirect	no	The domain redirects to another domain.
Redirect to https	yes	The domain redirects to https.
Redirect to www.	no	The domain redirects to www.domain.
Only with www.	no	The domain can only be reached with the subdomain "www".
Only DNS, no website	no	There are no A or AAAA records in DNS.
IP-Address	only IPv4	Shows whether the domain only has IPv4 or IPv6 or both.
SSL-Certificate	valid	Shows whether the domain has a valid SSL certificate.
Redirects	17	Number of domains that redirect to this domain.
Reverse IP	42	Number of domains with the same IP(s).

This data through the API

The data on this page is also available as JSON: /lookup for the key facts, /reverseip, /redirect and /similar for the lists, and /dnshistory with Basic and Premium. A free account comes with an API key and 100 calls a day.

curl -X POST https://api.webxtrend.com/v1.0/lookup \
  -H 'Content-Type: application/json' \
  -d '{"token": "YOUR_TOKEN", "query": "sys2.de"}'

Create a free account Read the API docs

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Websites whose start page offers something similar, found by comparing the text of their start pages, across languages. Near-identical copies, parking pages and error pages are left out. The full list of up to 100 comes through the API: similar websites.

Last SSL certificate

Issuer	ZeroSSL GmbH
Valid from	9/14/2026
Valid to	12/14/2026
Time until expiry	57 days

Last successful crawl

Title	SysQuadrat - Linux Administration Wartung
Description	Linux Firewall Sicherheit Security IDS rootserver Administration Michael Weinert icinga kvm Samba Emailserver webserver
Content-Length	9,371 bytes

Title and description as published by the page itself in its own <title> and <meta name="description"> tags.

DNS history

IPv4 address	Last updated
46.4.233.245	12/9/2023

Mail server	Priority	Last updated
mx.sys2.de	10	10/12/2025
mail.sys2.de	10	12/30/2023

Name server	Last updated
mrtg.sys2.de	12/9/2023
ns.sys2.de	12/9/2023

The five most recent states of each record type. The full history comes through the API: DNS history.

Most recent redirect domains

Domain	Last seen
linux-notfall.de	10/16/2026
2my.de	10/14/2026
kita-lubu.de	10/10/2026
linux-firewall.biz	10/10/2026
problemlos.net	10/10/2026
platon-ids.de	10/9/2026
venus-gmbh.com	10/8/2026
bildreihe.de	10/8/2026
sys2.eu	10/5/2026
platon-ids.com	10/5/2026
rootserversupport.de	10/5/2026
i2.pt	10/5/2026
and 5 more

Reverse IP neighbours

46.4.233.245 42 domains · here since 9/22/2026

Domain	On this IP since
weglauf.de	9/16/2026
web-planer.de	9/16/2026
venus-gmbh.com	9/15/2026
unix-services.de	9/13/2026
unix-profi.de	9/18/2026
sysquadrat.de	9/14/2026
sysquadrat.com	9/23/2026
sys2.eu	9/12/2026
sy-saga.de	9/17/2026
stallung.de	9/22/2026
s2q.de	9/17/2026
rosenkreuzer.net	9/22/2026
and 29 more

Sharing an address does not always mean sharing a server: on a CDN or a large hosting platform, millions of unrelated domains answer on the same few addresses. We measured how far that goes in Half the web sits on 276 IP addresses. The complete list of neighbours, also for an IP address, comes through the API: reverse IP lookup.

Dive into our data, search now!