1und1.systems - robtex.com

1und1.systems

DNSSEC⚠️ Not signed
NSns-ca.ui-dns.biz ⭐
A2001:8d8:fe:53:0:d9a0:51d4:100🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific
PTRns-ca.ui-dns.biz
A2607:f1c0:fe:53:185:132:33:212🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US
PTRns-ca.ui-dns.biz
A185.132.33.212🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)
PTRns-ca.ui-dns.biz
A217.160.81.212🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
PTRns-ca.ui-dns.biz
NSns-ca.ui-dns.com
A2001:8d8:fe:53:0:d9a0:52d4:100🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific
PTRns-ca.ui-dns.com
A2607:f1c0:fe:53:185:132:34:212🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US
PTRns-ca.ui-dns.com
A185.132.34.212🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)
PTRns-ca.ui-dns.com
A217.160.82.212🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
PTRns-ca.ui-dns.com
NSns-ca.ui-dns.de
A2001:8d8:fe:53:0:d9a0:50d4:100🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific
PTRns-ca.ui-dns.de
A2607:f1c0:fe:53:185:132:32:212🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US
PTRns-ca.ui-dns.de
A185.132.32.212🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)
PTRns-ca.ui-dns.de
A217.160.80.212🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
PTRns-ca.ui-dns.de
NSns-ca.ui-dns.org
A2001:8d8:fe:53:0:d9a0:53d4:100🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific
PTRns-ca.ui-dns.org
A2607:f1c0:fe:53:185:132:35:212🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US
PTRns-ca.ui-dns.org
A185.132.35.212🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)
PTRns-ca.ui-dns.org
A217.160.83.212🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
PTRns-ca.ui-dns.org
MXno-mx.ui-dns.com ⭐
TXTv=spf1 -all
SOAns-ca.ui-dns.bizdnsadmin@ionos.com 2019-04-23 #29

systems

DNSSEC🔒 Signed (DS record present)
NSv0n0.nic.systems ⭐
NSv0n1.nic.systems
NSv0n2.nic.systems
NSv0n3.nic.systems
NSv2n0.nic.systems
NSv2n1.nic.systems
SOAv0n0.nic.systemshostmaster@donuts.email serial=1786652389

Same first word

1und1.co.at
1und1.domains
1und1.sk
1und1.it
1und1.one
1und1.city
1und1.tools
1und1.us
1und1.cz
1und1.eu
1und1.ch
1und1.jp
1und1.systems
1und1.org
1und1.expert
1und1.cl
1und1.marketing
1und1.ro
1und1.com.br
1und1.pl
1und1.ru
1und1.discount
1und1.pt
1und1.cn
1und1.ag
1und1.de
1und1.mobi
1und1.zone
1und1.ca
1und1.info
1und1.net
1und1.bayern
1und1.land
1und1.directory
1und1.education
1und1.name
1und1.com
1und1.co
1und1.guru
1und1.es
1und1.tips
1und1.me
1und1.partners
1und1.sg
1und1.gratis
1und1.tv
1und1.group
1und1.ai
1und1.legal
1und1.biz
1und1.center
1und1.nl
1und1.credit
1und1.cc
1und1.today
1und1.at
1und1.fr
1und1.be
1und1.nrw
1und1.dev
1und1.direct
1und1.dk
1und1.com.pl
1und1.mx
1und1.dating
1und1.email
1und1.business
1und1.engineering
1und1.app
1und1.place

Similar names

1un1d.eu
11dun.top
11dun.com
1un1d.com
dun11.com
1un1d.de
11dun.cn
1nud1.de

DNS History

5 records (5 active, 0 former)

NSns-ca.ui-dns.bizns-ca.ui-dns.comns-ca.ui-dns.dens-ca.ui-dns.orgMXno-mx.ui-dns.com
●NSns-ca.ui-dns.biz2026-08-11 → 2026-08-13 · 2 obs
● 2026-08-11 22:09:00
● 2026-08-13 20:41:30
●NSns-ca.ui-dns.com2026-08-11 → 2026-08-13 · 2 obs
● 2026-08-11 22:09:00
● 2026-08-13 20:41:30
●NSns-ca.ui-dns.de2026-08-11 → 2026-08-13 · 2 obs
● 2026-08-11 22:09:00
● 2026-08-13 20:41:30
●NSns-ca.ui-dns.org2026-08-11 → 2026-08-13 · 2 obs
● 2026-08-11 22:09:00
● 2026-08-13 20:41:30
●MXno-mx.ui-dns.com2026-08-11 → 2026-08-13 · 2 obs
● 2026-08-11 22:09:00
● 2026-08-13 20:41:30

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
systemsv0n0.nic.systems, v0n1.nic.systems, v0n2.nic.systems, v0n3.nic.systems...12 records
1und1.systemsns-ca.ui-dns.org, ns-ca.ui-dns.de, ns-ca.ui-dns.biz, ns-ca.ui-dns.com-

✅ Authoritative Response

Server:185.132.35.212

NS records: ns-ca.ui-dns.org, ns-ca.ui-dns.de, ns-ca.ui-dns.biz, ns-ca.ui-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 1und1.systems (unsigned zone)

⏱️ Timing

Total: 504ms | Queries: -

📄 Records

TypeCountSample Data
NS4ns-ca.ui-dns.com, ns-ca.ui-dns.de...
MX1no-mx.ui-dns.com (pri: 1)
TXT1v=spf1 -all
SOA1ns-ca.ui-dns.biz dnsadmin.ionos.com

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (v0n0.nic.systems, v0n1.nic.systems, v0n2.nic.systems...)

Analysis

Name Servers

Four name servers handle the delegation for 1und1.systems: ns-ca.ui-dns.biz, ns-ca.ui-dns.com, ns-ca.ui-dns.de and ns-ca.ui-dns.org.

1und1.systems has at least partial name server overlap with other domains, such as freiburg.email, webde.solutions, webcent.immo and two others.

It is common to find these name servers paired with the name servers ns-mam.ui-dns.biz, ns-mam.ui-dns.com, ns-mam.ui-dns.de and ns-mam.ui-dns.org.

Each hostname ns-ca.ui-dns.biz, ns-ca.ui-dns.com, ns-ca.ui-dns.de and ns-ca.ui-dns.org has four IP addresses: ns-ca.ui-dns.biz has 185.132.33.212, 217.160.81.212, 2001:8d8:fe:53:0:d9a0:51d4:100 and 2607:f1c0:fe:53:185:132:33:212; ns-ca.ui-dns.com has 185.132.34.212, 217.160.82.212, 2001:8d8:fe:53:0:d9a0:52d4:100 and 2607:f1c0:fe:53:185:132:34:212; ns-ca.ui-dns.de has 185.132.32.212, 217.160.80.212, 2001:8d8:fe:53:0:d9a0:50d4:100 and 2607:f1c0:fe:53:185:132:32:212; ns-ca.ui-dns.org has 185.132.35.212, 217.160.83.212, 2001:8d8:fe:53:0:d9a0:53d4:100 and 2607:f1c0:fe:53:185:132:35:212.

Mail Servers

1und1.systems uses one mail server — no-mx.ui-dns.com.

The mail server setup of 1und1.systems matches that of other domains such as 1and1.to, mailcheck.email, flatrate.credit and two others.