gap-system.org - robtex.com

gap-system.org

DNSSEC⚠️ Not signed
A2001:638:208:ef61:0:ff:fe00:2🇩🇪 DFN2001:638::/32 -V6-AGG1
PTRwta-web.rhrk.uni-kl.de
A131.246.120.130🇩🇪 UNIKL131.246.0.0/16 RHRK-LAN
NSns1.rptu.de ⭐
A2a03:63c0::53:1001🇩🇪 UNIKL2a03:63c0::/32 -V6-1
PTRns1.rptu.de
A131.246.9.117🇩🇪 UNIKL131.246.0.0/16 RHRK-LAN
PTRns1.rptu.de
NSns2.rptu.de
A2a03:63c0::53:1002🇩🇪 UNIKL2a03:63c0::/32 -V6-1
PTRns2.rptu.de
A131.246.1.117🇩🇪 UNIKL131.246.0.0/16 RHRK-LAN
PTRns2.rptu.de
MXmailgate2.uni-kl.de ⭐
A2001:638:208:120::209🇩🇪 DFN2001:638::/32 -V6-AGG1
PTRmailgate2.uni-kl.de
A131.246.120.209🇩🇪 UNIKL131.246.0.0/16 RHRK-LAN
PTRmailgate2.uni-kl.de
MXmailgate1.uni-kl.de(10)
A2001:638:208:120::208🇩🇪 DFN2001:638::/32 -V6-AGG1
A131.246.120.208🇩🇪 UNIKL131.246.0.0/16 RHRK-LAN
PTRmailgate1.uni-kl.de
TXTv=spf1 redirect=_spf.uni-kl.de
SOAns1.rptu.dehostmaster@uni-kl.de 2026-02-09 #81

org

DNSSEC🔒 Signed (DS record present)
NSa0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation
NSa2.org.afilias-nst.info ⚠️ Not in parent delegation
NSb0.org.afilias-nst.org
NSb2.org.afilias-nst.org
NSc0.org.afilias-nst.info ⚠️ Not in parent delegation
NSd0.org.afilias-nst.org
SOAa0.org.afilias-nst.infohostmaster@donuts.email serial=1774569079
rank #162988 globally
rank #11471 in the tld
WOT: SAFE (87/100)
📈 Tranco rank: #437,061

Subdomains

mail.gap-system.org

Same first word

gap-system.net
gap-system.org

DNS History

11 records (6 active, 5 former)

20162017201820192020202120222023202420252026NSns1.rptu.dens2.rptu.dens1.namecity.comns2.namecity.comMXmailgate1.uni-kl.demailgate2.uni-kl.demail-gap.mcs.st-and.ac.uknewyang.mcs.st-and.ac.ukA131.246.120.1302001:638:208:ef61:0:ff:fe00:2138.251.192.245
○NSns1.namecity.com2015-06-19 → 2016-10-28 · 4 obs
● 2015-06-19 06:57:36
● 2016-10-28 15:16:00
○ 2026-02-24 17:18:32
○ 2026-03-27 00:00:30
●NSns1.rptu.de2026-02-24 → 2026-03-27 · 3 obs
○ 2016-10-28 15:16:00
● 2026-02-24 17:18:32
● 2026-03-27 00:00:30
○NSns2.namecity.com2015-06-19 → 2016-10-28 · 4 obs
● 2015-06-19 06:57:36
● 2016-10-28 15:16:00
○ 2026-02-24 17:18:32
○ 2026-03-27 00:00:30
●NSns2.rptu.de2026-02-24 → 2026-03-27 · 3 obs
○ 2016-10-28 15:16:00
● 2026-02-24 17:18:32
● 2026-03-27 00:00:30
○MXmail-gap.mcs.st-and.ac.uk2015-06-19 → 2016-10-28 · 4 obs
● 2015-06-19 06:57:36
● 2016-10-28 15:16:00
○ 2026-02-24 17:18:32
○ 2026-03-27 00:00:30
●MXmailgate1.uni-kl.de2026-02-24 → 2026-03-27 · 3 obs
○ 2016-10-28 15:16:00
● 2026-02-24 17:18:32
● 2026-03-27 00:00:30
●MXmailgate2.uni-kl.de2026-02-24 → 2026-03-27 · 3 obs
○ 2016-10-28 15:16:00
● 2026-02-24 17:18:32
● 2026-03-27 00:00:30
○MXnewyang.mcs.st-and.ac.uk2015-06-19 → 2016-10-28 · 4 obs
● 2015-06-19 06:57:36
● 2016-10-28 15:16:00
○ 2026-02-24 17:18:32
○ 2026-03-27 00:00:30
●A131.246.120.1302026-02-24 → 2026-03-27 · 3 obs
○ 2016-10-28 15:16:00
● 2026-02-24 17:18:32
● 2026-03-27 00:00:30
○A138.251.192.2452015-06-19 → 2016-10-28 · 4 obs
● 2015-06-19 06:57:36
● 2016-10-28 15:16:00
○ 2026-02-24 17:18:32
○ 2026-03-27 00:00:30
●A2001:638:208:ef61:0:ff:fe00:22026-02-24 → 2026-03-27 · 3 obs
○ 2016-10-28 15:16:00
● 2026-02-24 17:18:32
● 2026-03-27 00:00:30

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org-
gap-system.orgns1.rptu.de, ns2.rptu.de-

✅ Authoritative Response

Server:131.246.9.117

NS records: ns1.rptu.de, ns2.rptu.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for gap-system.org (unsigned zone)

⏱️ Timing

Total: 963ms | Queries: -

📄 Records

TypeCountSample Data
A1131.246.120.130
AAAA12001:638:208:ef61:0:ff:fe00:2
NS2ns2.rptu.de, ns1.rptu.de
MX2mailgate2.uni-kl.de (pri: 5), mailgate1.uni-kl.de (pri: 10)
TXT1v=spf1 redirect=_spf.uni-kl.de
SOA1ns1.rptu.de hostmaster.uni-kl.de

Analysis

Hierarchy

gap-system.org is parent of mail.gap-system.org.

IP Addresses

gap-system.org points to two IP numbers: 2001:638:208:ef61:0:ff:fe00:2 and 131.246.120.130.

Other host names, for instance rptu.com, ifos-(0x616e616c)ytik.de, cva-kl.de, uni-landau.de and zfuw.uni-kl.de share IP numbers with gap-system.org.

Name Servers

gap-system.org's delegation is to two name servers ns1.rptu.de and ns2.rptu.de.

gap-system.org shares the same name server configuration as other domains, such as lautarium.de, vcrp-ecademy.de, fiores.com, ageing-smart.de and imove-kl.de.

gap-system.org at least partially shares its name servers with other domains, for instance uni-kl.de, itwm.de, 168.68.192.in-addr.arpa, 169.68.192.in-addr.arpa and 167.68.192.in-addr.arpa.

These name servers are commonly used with dns1.belwue.de, dns-3.dfn.de, dns-1.dfn.de, ns1.fraunhofer.de, ns2.fraunhofer.de, ns3.fraunhofer.de, nserver1.hs-koblenz.de, nserver2.hs-koblenz.de, elfenkauz.zit.uni-kl.de and dns-2.dfn.de.

Host names with two IP numbers: ns1.rptu.de points to 2a03:63c0::53:1001 and 131.246.9.117; ns2.rptu.de points to 2a03:63c0::53:1002 and 131.246.1.117

Mail Servers

Two mail servers mailgate1.uni-kl.de and mailgate2.uni-kl.de handle gap-system.org.

gap-system.org uses the same mail server setup as other domains such as dfki-1009.dfki.uni-kl.de, informatik.uni-kl.de, physik.uni-kl.de, yilesche.arubi.uni-kl.de and rotes093.wohnheim.uni-kl.de.

Host names with two IP numbers: mailgate1.uni-kl.de points to 2001:638:208:120::208 and 131.246.120.208; mailgate2.uni-kl.de points to 2001:638:208:120::209 and 131.246.120.209