CF1759824705246-tsm20251005211530

WWW.RTSAK.COM - open4u.de

Search for IP or hostnames:

open4u.de checked at 2025-10-07T08:11:45.232Z 422ms 105/105/105 100% R:11

open4u.de

NSns1021.ui-dns.biz
A2001:8d8:fe:53:0:d9a0:5115:100 🇩🇪 IONOS SE
PTRns1021.ui-dns.biz
A217.160.81.21🇩🇪 IONOS SE
PTRns1021.ui-dns.biz
NSns1046.ui-dns.com
A2001:8d8:fe:53:0:d9a0:522e:100 🇩🇪 IONOS SE
PTRns1046.ui-dns.com
A217.160.82.46🇩🇪 IONOS SE
PTRns1046.ui-dns.com
MXmx00.ionos.de
A212.227.15.41🇩🇪 IONOS SE
PTRmx00.kundenserver.de
MXmx01.ionos.de
A217.72.192.67🇩🇪 IONOS SE
PTRmx01.kundenserver.de
NSns1120.ui-dns.de
A2607:f1c0:fe:53:185:132:32:120 🇺🇸 IONOS-Anycast
PTRns1120.ui-dns.de
A217.160.80.120🇩🇪 IONOS SE
PTRns1120.ui-dns.de
NSns1074.ui-dns.org
A2001:8d8:fe:53:0:d9a0:534a:100 🇩🇪 IONOS SE
PTRns1074.ui-dns.org
A217.160.83.74🇩🇪 IONOS SE
PTRns1074.ui-dns.org
A2a01:4f8:d0a:526b::2 🇩🇪 Hetzner
PTRwww317.your-server.de
A88.198.220.177🇩🇪 Hetzner
PTRwww317.your-server.de

de

NSa.nic.de
NSf.nic.de
NSz.nic.de
NSl.de.net
NSn.de.net
NSs.de.net

Starts with same word

Starts similarily

AI analysis

open4u.de points to two IP numbers: 2a01:4f8:d0a:526b::2 and 88.198.220.177.

Other host names such as doltcini.at, mail.emisfere.ro, matelasshop.com, ixtec.de and mail.benebavarese.com share IP numbers with open4u.de.

open4u.de is delegated to four name servers: ns1021.ui-dns.biz, ns1046.ui-dns.com, ns1120.ui-dns.de and ns1074.ui-dns.org.

At least part of the name servers for open4u.de are shared with other domains, for instance interoliva.com, pongonline.de, wagner-home.de, vincentpadalino.com and bahary.net.

these name servers are commonly used with the name servers ns1046.ui-dns.biz, ns1046.ui-dns.de, ns1046.ui-dns.org, ns1074.ui-dns.biz, ns1074.ui-dns.com, ns1074.ui-dns.de, ns1120.ui-dns.biz, ns1120.ui-dns.com, ns1120.ui-dns.org and ns1021.ui-dns.com.

Host names with two IP numbers:

ns1021.ui-dns.biz points to: 2001:8d8:fe:53:0:d9a0:5115:100 and 217.160.81.21

ns1046.ui-dns.com points to: 2001:8d8:fe:53:0:d9a0:522e:100 and 217.160.82.46

ns1120.ui-dns.de points to: 2607:f1c0:fe:53:185:132:32:120 and 217.160.80.120

ns1074.ui-dns.org points to: 2001:8d8:fe:53:0:d9a0:534a:100 and 217.160.83.74

open4u.de is handled by two mail servers: mx00.ionos.de and mx01.ionos.de.

open4u.de uses the same mail server setup as other domains, for instance klinx.eu, ib-guzman.de, kutter-kuestenfisch.de, gohelp.de and norbert-dunker.de.

open4u.de shares some mail servers with other domains, for instance xn--institut-fr-finanzen-yec.de and meyer-seals.com.

Hostnames with a single IP

mx00.ionos.de resolves to: 212.227.15.41.

mx01.ionos.de resolves to: 217.72.192.67.

Perform reverse DNS lookup as well as normal forward DNS. Check Autonomous System Numbers (ASNs) and BGP connections between Internet Service Providers.
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ZQiPhyX CF johedugfp 2025-10-07