klassweb.de - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

klassweb.de

DNSSEC⚠️ Not signed
A37.221.198.201🇩🇪 netcup-AS37.221.196.0/22
PTRklassweb.de
NSdocks01.rzone.de ⭐
A2001:8d8:fe:53:5747:2a74:d:1🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific
PTRdocks01.rzone.de
A217.160.80.128🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
PTRdocks01.rzone.de
NSshades15.rzone.de
A2607:f1c0:fe:53:185:132:34:142🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US
PTRshades15.rzone.de
A185.132.34.142🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)
PTRshades15.rzone.de
MXsmtpin.rzone.de ⭐
A2a01:238:20a:202:50f0::1097🇩🇪 STRATO2a01:238:20a::/48 Strato AG
PTRsmtpin.rzone.de
A81.169.145.97🇩🇪 STRATO81.169.144.0/22 AG
PTRsmtpin.rzone.de
TXTv=spf1 redirect=_spf.strato.com
SOAdocks01.rzone.dehostmaster@strato-rz.de 2020-05-23 #81

de

DNSSEC🔒 Signed (DS record present)
NSf.nic.de ⭐
NSa.nic.de
NSl.de.net ⚠️ Not in parent delegation
NSn.de.net ⚠️ Not in parent delegation
NSs.de.net ⚠️ Not in parent delegation
NSz.nic.de
SOAf.nic.dedns-operations@denic.de serial=1786862718

PTR for

201.198.221.37.in-addr.arpa

Same first word

klassweb.de

Similar names

sebwalks.org
skewlabs.xyz
webklass.ru
wesklabs.com
webklass.com

DNS History

8 records (4 active, 4 former)

20162017201820192020202120222023202420252026NSdocks01.rzone.deshades15.rzone.deMXsmtpin.rzone.desmtp.rzone.deA37.221.198.2012a01:238:20a:202:1147::81.169.145.14785.214.100.87
●NSdocks01.rzone.de2015-07-20 → 2026-08-16 · 2 obs
● 2015-07-20 01:26:06
● 2026-08-16 06:58:08
●NSshades15.rzone.de2015-07-20 → 2026-08-16 · 2 obs
● 2015-07-20 01:26:06
● 2026-08-16 06:58:08
○MXsmtp.rzone.de2015-07-20 → 2017-01-01 · 4 obs
● 2015-07-20 01:26:06
● 2017-01-01 14:04:32
○ 2026-02-24 20:11:22
○ 2026-08-16 06:58:08
●MXsmtpin.rzone.de2026-02-24 → 2026-08-16 · 3 obs
○ 2017-01-01 14:04:32
● 2026-02-24 20:11:22
● 2026-08-16 06:58:08
○A2a01:238:20a:202:1147::2017-01-01 → 2017-01-01 · 4 obs
○ 2016-04-28 08:09:24
● 2017-01-01 14:04:32
○ 2026-02-24 20:11:22
○ 2026-08-16 06:58:08
●A37.221.198.2012026-02-24 → 2026-08-16 · 3 obs
○ 2017-01-01 14:04:32
● 2026-02-24 20:11:22
● 2026-08-16 06:58:08
○A81.169.145.1472017-01-01 → 2017-01-01 · 4 obs
○ 2016-04-28 08:09:24
● 2017-01-01 14:04:32
○ 2026-02-24 20:11:22
○ 2026-08-16 06:58:08
○A85.214.100.872015-07-20 → 2016-04-28 · 4 obs
● 2015-07-20 01:26:06
● 2016-04-28 08:09:24
○ 2017-01-01 14:04:32
○ 2026-08-16 06:58:08

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
dea.nic.de, f.nic.de, z.nic.de-
klassweb.dedocks01.rzone.de, shades15.rzone.de-

✅ Authoritative Response

Server:217.160.80.128

NS records: docks01.rzone.de, shades15.rzone.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for klassweb.de (unsigned zone)

⏱️ Timing

Total: 708ms | Queries: -

📄 Records

TypeCountSample Data
A137.221.198.201
NS2shades15.rzone.de, docks01.rzone.de
MX1smtpin.rzone.de (pri: 5)
TXT1v=spf1 redirect=_spf.strato.com
SOA1docks01.rzone.de hostmaster.strato-rz.de

Analysis

IP Addresses

klassweb.de resolves to just one IP address, 37.221.198.201.

v220101168044391.yourvserver.net is an example of another host name that shares IP numbers with klassweb.de.

Name Servers

klassweb.de has two authoritative name servers — docks01.rzone.de and shades15.rzone.de.

klassweb.de shares its NS records with other domains, for example pranger.land, travelcheck.es, aloges.de and two others.

klassweb.de partially shares its NS delegation with several other domains, including activedesign.de, mbsteuerberatung.com, azpbouw.nl and two others.

In DNS configurations, these name servers often share authority with shades11.rzone.de, docks15.rzone.de, shades02.rzone.de and 7 other name servers.

Both docks01.rzone.de and shades15.rzone.de have two IP addresses each. docks01.rzone.de resolves to 217.160.80.128 and 2001:8d8:fe:53:5747:2a74:d:1; shades15.rzone.de resolves to 185.132.34.142 and 2607:f1c0:fe:53:185:132:34:142.

Mail Servers

The sole mail server for klassweb.de is smtpin.rzone.de.

Among the domains sharing a mail server setup with klassweb.de are invoicecomponents.de, awinzer.de, hkbv.de and two others.

The host smtpin.rzone.de resolves to 81.169.145.97 and 2a01:238:20a:202:50f0::1097 — two IP addresses.