thw-lernsystem.de - robtex.com

thw-lernsystem.de

DNSSEC🔒 Signed (DS record present)
A2003:2:2:15:80:150:6:143🇩🇪 DTAG2003::/19 Deutsche Telekom large PA space
A80.150.6.143🇩🇪 DTAG80.144.0.0/13 Deutsche Telekom AG, Internet service provider
NSdns01-tld.t-online.de ⭐
A2003:2:6:137:80:157:195:90🇩🇪 DTAG2003::/19 Deutsche Telekom large PA space
A80.157.195.90🇩🇪 DTAG80.157.0.0/16 Deutsche Telekom AG, Internet service provider
NSdns02-tld.t-online.de
A2003:180:a::1:53🇩🇪 DTAG2003::/19 Deutsche Telekom large PA space
PTRdns02-tld.t-online.de
A212.185.24.9🇩🇪 DTAG212.184.0.0/15 Deutsche Telekom AG, Internet service provider
PTRdns02-tld.t-online.de
MXsmtp-01.tld.t-online.de ⭐
A194.25.134.76🇩🇪 DTAG194.25.0.0/16 Deutsche Telekom AG, Internet service provider
PTRsmtp-01.tld.t-online.de
MXsmtp-02.tld.t-online.de ⭐
A194.25.134.12🇩🇪 DTAG194.25.0.0/16 Deutsche Telekom AG, Internet service provider
PTRsmtp-02.tld.t-online.de
TXTv=spf1 include:_spf.hier-im-netz.de ~all
SOAdns01-tld.t-online.dedns@telekom.de 2026-04-29 #2

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=1778480308
WOT: SAFE (76/100)

Subdomains

www.thw-lernsystem.de

Same first word

thw-lernsystem.de

DNS History

20 records (6 active, 14 former)

200920112013201520172019202120232025NSdns01-tld.t-online.dedns02-tld.t-online.dedns11.netcologne.dedns12.netcologne.dedns13.netcologne.dedns14.netcologne.dens1.first-ns.derobotns2.second-ns.derobotns3.second-ns.comMXsmtp-01.tld.t-online.desmtp-02.tld.t-online.dedmx1.netcologne.dedmx2.netcologne.demail.thw-lernsystem.deA2003:2:2:15:80:150:6:14380.150.6.143176.9.38.2052001:4dd0:100:1f00:80:0:80:181.173.194.385.10.195.235
●NSdns01-tld.t-online.de2026-03-23 → 2026-05-11 · 3 obs
○ 2017-04-05 13:15:42
● 2026-03-23 13:44:56
● 2026-05-11 06:41:30
●NSdns02-tld.t-online.de2026-03-23 → 2026-05-11 · 3 obs
○ 2017-04-05 13:15:42
● 2026-03-23 13:44:56
● 2026-05-11 06:41:30
○NSdns11.netcologne.de2015-08-07 → 2017-04-05 · 5 obs
○ 2008-01-19 09:20:08
● 2015-08-07 11:01:14
● 2017-04-05 13:15:42
○ 2026-03-23 13:44:56
○ 2026-05-11 06:41:30
○NSdns12.netcologne.de2015-08-07 → 2017-04-05 · 5 obs
○ 2008-01-19 09:20:08
● 2015-08-07 11:01:14
● 2017-04-05 13:15:42
○ 2026-03-23 13:44:56
○ 2026-05-11 06:41:30
○NSdns13.netcologne.de2015-08-07 → 2017-04-05 · 5 obs
○ 2008-01-19 09:20:08
● 2015-08-07 11:01:14
● 2017-04-05 13:15:42
○ 2026-03-23 13:44:56
○ 2026-05-11 06:41:30
○NSdns14.netcologne.de2015-08-07 → 2017-04-05 · 5 obs
○ 2008-01-19 09:20:08
● 2015-08-07 11:01:14
● 2017-04-05 13:15:42
○ 2026-03-23 13:44:56
○ 2026-05-11 06:41:30
○NSns1.first-ns.de2008-01-19 → 2008-01-19 · 3 obs
● 2008-01-19 09:20:08
○ 2015-08-07 11:01:14
○ 2026-05-11 06:41:30
○NSrobotns2.second-ns.de2008-01-19 → 2008-01-19 · 3 obs
● 2008-01-19 09:20:08
○ 2015-08-07 11:01:14
○ 2026-05-11 06:41:30
○NSrobotns3.second-ns.com2008-01-19 → 2008-01-19 · 3 obs
● 2008-01-19 09:20:08
○ 2015-08-07 11:01:14
○ 2026-05-11 06:41:30
○MXdmx1.netcologne.de2016-07-17 → 2017-04-05 · 5 obs
○ 2015-08-07 11:01:14
● 2016-07-17 17:45:22
● 2017-04-05 13:15:42
○ 2026-03-23 13:44:56
○ 2026-05-11 06:41:30
○MXdmx2.netcologne.de2016-07-17 → 2017-04-05 · 5 obs
○ 2015-08-07 11:01:14
● 2016-07-17 17:45:22
● 2017-04-05 13:15:42
○ 2026-03-23 13:44:56
○ 2026-05-11 06:41:30
○MXmail.thw-lernsystem.de2008-01-19 → 2008-01-19 · 3 obs
● 2008-01-19 09:20:08
○ 2015-08-07 11:01:14
○ 2026-05-11 06:41:30
●MXsmtp-01.tld.t-online.de2026-03-23 → 2026-05-11 · 3 obs
○ 2017-04-05 13:15:42
● 2026-03-23 13:44:56
● 2026-05-11 06:41:30
●MXsmtp-02.tld.t-online.de2026-03-23 → 2026-05-11 · 3 obs
○ 2017-04-05 13:15:42
● 2026-03-23 13:44:56
● 2026-05-11 06:41:30
○A176.9.38.2052015-08-07 → 2016-07-17 · 5 obs
○ 2008-01-19 09:20:08
● 2015-08-07 11:01:14
● 2016-07-17 17:45:22
○ 2017-04-05 13:15:42
○ 2026-05-11 06:41:30
○A2001:4dd0:100:1f00:80:0:80:12017-04-05 → 2017-04-05 · 4 obs
○ 2016-07-17 17:45:22
● 2017-04-05 13:15:42
○ 2026-03-23 13:44:56
○ 2026-05-11 06:41:30
●A2003:2:2:15:80:150:6:1432026-03-23 → 2026-05-11 · 3 obs
○ 2017-04-05 13:15:42
● 2026-03-23 13:44:56
● 2026-05-11 06:41:30
●A80.150.6.1432026-03-23 → 2026-05-11 · 3 obs
○ 2017-04-05 13:15:42
● 2026-03-23 13:44:56
● 2026-05-11 06:41:30
○A81.173.194.32017-04-05 → 2017-04-05 · 4 obs
○ 2016-07-17 17:45:22
● 2017-04-05 13:15:42
○ 2026-03-23 13:44:56
○ 2026-05-11 06:41:30
○A85.10.195.2352008-01-19 → 2008-01-19 · 3 obs
● 2008-01-19 09:20:08
○ 2015-08-07 11:01:14
○ 2026-05-11 06:41:30

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
dea.nic.de, f.nic.de, z.nic.de-
thw-lernsystem.dedns01-tld.t-online.de, dns02-tld.t-online.de-

✅ Authoritative Response

Server:212.185.24.9

NS records: dns01-tld.t-online.de, dns02-tld.t-online.de

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 2132ms | Queries: -

📄 Records

TypeCountSample Data
A180.150.6.143
AAAA12003:2:2:15:80:150:6:143
NS2dns02-tld.t-online.de, dns01-tld.t-online.de
MX2smtp-01.tld.t-online.de (pri: 10), smtp-02.tld.t-online.de (pri: 10)
TXT1v=spf1 include:_spf.hier-im-netz.de ~all
SOA1dns01-tld.t-online.de dns.telekom.de

Analysis

Hierarchy

The parent of www.thw-lernsystem.de is thw-lernsystem.de.

IP Addresses

Two IP numbers are pointed to by thw-lernsystem.de: 2003:2:2:15:80:150:6:143 and 80.150.6.143.

other host names include www.bocon.de, dieharzer.de, mbuehn.de, schroeder-transport.de and odibo.de; they share IP numbers with thw-lernsystem.de.

Name Servers

Two name servers dns01-tld.t-online.de and dns02-tld.t-online.de handle the delegation for thw-lernsystem.de.

thw-lernsystem.de shares the same name server setup as other domains, for instance czesla.com, topminis.de, r-wiktor.de, halst.de and kuc-direkt.de.

Host names with two IP numbers:

dns01-tld.t-online.de points to 2003:2:6:137:80:157:195:90 and 80.157.195.90.

dns02-tld.t-online.de points to 2003:180:a::1:53 and 212.185.24.9.

Mail Servers

thw-lernsystem.de is handled by two mail servers: smtp-01.tld.t-online.de and smtp-02.tld.t-online.de.

thw-lernsystem.de uses the same mail server setup as other domains, for instance feriendorf-gartow.de, xn--hpfburgpark-thb.de, eesr.de, kientzle.de and eschuetze-hompage-t-online.de.

thw-lernsystem.de shares at least some mail servers with other domains, for instance bequembuchen.de.

Host names with one IP:

smtp-01.tld.t-online.de points to: 194.25.134.76

smtp-02.tld.t-online.de points to: 194.25.134.12