fu4u.de - robtex.com

fu4u.de

DNSSEC⚠️ Not signed
A2a03:4000:61:ed28::23:2281🇩🇪 netcup-AS2a03:4000::/32 NETCUP-GMBH
A202.61.233.228🇩🇪 netcup-AS202.61.233.0/24
NSroot-dns.netcup.net ⭐
A2a03:4000:0:1::e1e1🇩🇪 netcup-AS2a03:4000::/32 NETCUP-GMBH
PTRroot-dns.netcup.net
A46.38.225.225🇩🇪 netcup-AS46.38.225.0/24
PTRroot-dns.netcup.net
NSsecond-dns.netcup.net
A2a03:4000:2:24b::c7c7🇩🇪 netcup-AS2a03:4000::/32 NETCUP-GMBH
PTRsecond-dns.netcup.net
A37.221.199.199🇩🇪 netcup-AS37.221.196.0/22
PTRsecond-dns.netcup.net
NSthird-dns.netcup.net
A2a03:4001:0:106::3f44🇩🇪 netcup-AS2a03:4001::/32 NETCUP-GMBH
PTRthird-dns.netcup.net
A188.68.63.68🇩🇪 netcup-AS188.68.63.0/24 NETCUP-GMBH
PTRthird-dns.netcup.net
MXmail.fu4u.de ⭐
A202.61.233.230🇩🇪 netcup-AS202.61.233.0/24
PTRmxe9e6.netcup.net
MXmxe9e6.netcup.net(50)
A2a03:4000:0:22e:d8de:f2ff:fe3f:f966🇩🇪 netcup-AS2a03:4000::/32 NETCUP-GMBH
PTRmxe9e6.netcup.net
A202.61.233.230🇩🇪 netcup-AS202.61.233.0/24
PTRmxe9e6.netcup.net
TXTv=spf1 mx a include:_spf.webhosting.systems ~all
SOAroot-dns.netcup.netdnsadmin@netcup.net 2025-12-12 #14

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=1774758407

Subdomains

mail.fu4u.de

Same first word

fu4u.de
fu4u.com

Similar names

uf4u.myshopify.com
uf4u.com

DNS History

23 records (7 active, 16 former)

20162017201820192020202120222023202420252026NSroot-dns.netcup.netsecond-dns.netcup.netthird-dns.netcup.netns1.domainoffensive.dens1.masterlogin.dens2.domainoffensive.dens2.masterlogin.dens3.domainoffensive.dens3.masterlogin.deMXmail.fu4u.demxe9e6.netcup.netmx.redirect.domainoffensive.demx01.masterlogin.demx02.masterlogin.demx03.masterlogin.demxbackup.masterlogin.demxfallback.redirect.domainoffensive.deA202.61.233.2282a03:4000:61:ed28::23:2281134.0.30.2082a01:4f8:190:62f4::132a03:2900:7::1678.47.59.169
○NSns1.domainoffensive.de2019-03-10 → 2019-03-10 · 4 obs
○ 2017-02-07 12:36:30
● 2019-03-10 06:43:52
○ 2026-03-05 19:40:14
○ 2026-03-29 04:41:34
○NSns1.masterlogin.de2015-07-20 → 2017-02-07 · 4 obs
● 2015-07-20 10:40:34
● 2017-02-07 12:36:30
○ 2019-03-10 06:43:52
○ 2026-03-29 04:41:34
○NSns2.domainoffensive.de2019-03-10 → 2019-03-10 · 4 obs
○ 2017-02-07 12:36:30
● 2019-03-10 06:43:52
○ 2026-03-05 19:40:14
○ 2026-03-29 04:41:34
○NSns2.masterlogin.de2015-07-20 → 2017-02-07 · 4 obs
● 2015-07-20 10:40:34
● 2017-02-07 12:36:30
○ 2019-03-10 06:43:52
○ 2026-03-29 04:41:34
○NSns3.domainoffensive.de2019-03-10 → 2019-03-10 · 4 obs
○ 2017-02-07 12:36:30
● 2019-03-10 06:43:52
○ 2026-03-05 19:40:14
○ 2026-03-29 04:41:34
○NSns3.masterlogin.de2015-07-20 → 2017-02-07 · 4 obs
● 2015-07-20 10:40:34
● 2017-02-07 12:36:30
○ 2019-03-10 06:43:52
○ 2026-03-29 04:41:34
●NSroot-dns.netcup.net2026-03-05 → 2026-03-29 · 3 obs
○ 2019-03-10 06:43:52
● 2026-03-05 19:40:14
● 2026-03-29 04:41:34
●NSsecond-dns.netcup.net2026-03-05 → 2026-03-29 · 3 obs
○ 2019-03-10 06:43:52
● 2026-03-05 19:40:14
● 2026-03-29 04:41:34
●NSthird-dns.netcup.net2026-03-05 → 2026-03-29 · 3 obs
○ 2019-03-10 06:43:52
● 2026-03-05 19:40:14
● 2026-03-29 04:41:34
●MXmail.fu4u.de2026-03-05 → 2026-03-29 · 3 obs
○ 2019-03-10 06:43:52
● 2026-03-05 19:40:14
● 2026-03-29 04:41:34
○MXmx.redirect.domainoffensive.de2019-03-10 → 2019-03-10 · 4 obs
○ 2017-02-07 12:36:30
● 2019-03-10 06:43:52
○ 2026-03-05 19:40:14
○ 2026-03-29 04:41:34
○MXmx01.masterlogin.de2015-07-20 → 2017-02-07 · 4 obs
● 2015-07-20 10:40:34
● 2017-02-07 12:36:30
○ 2019-03-10 06:43:52
○ 2026-03-29 04:41:34
○MXmx02.masterlogin.de2015-07-20 → 2017-02-07 · 4 obs
● 2015-07-20 10:40:34
● 2017-02-07 12:36:30
○ 2019-03-10 06:43:52
○ 2026-03-29 04:41:34
○MXmx03.masterlogin.de2015-07-20 → 2017-02-07 · 4 obs
● 2015-07-20 10:40:34
● 2017-02-07 12:36:30
○ 2019-03-10 06:43:52
○ 2026-03-29 04:41:34
○MXmxbackup.masterlogin.de2015-07-20 → 2017-02-07 · 4 obs
● 2015-07-20 10:40:34
● 2017-02-07 12:36:30
○ 2019-03-10 06:43:52
○ 2026-03-29 04:41:34
●MXmxe9e6.netcup.net2026-03-05 → 2026-03-29 · 3 obs
○ 2019-03-10 06:43:52
● 2026-03-05 19:40:14
● 2026-03-29 04:41:34
○MXmxfallback.redirect.domainoffensive.de2019-03-10 → 2019-03-10 · 4 obs
○ 2017-02-07 12:36:30
● 2019-03-10 06:43:52
○ 2026-03-05 19:40:14
○ 2026-03-29 04:41:34
○A134.0.30.2082015-07-20 → 2017-02-07 · 4 obs
● 2015-07-20 10:40:34
● 2017-02-07 12:36:30
○ 2019-03-10 06:43:52
○ 2026-03-29 04:41:34
●A202.61.233.2282026-03-05 → 2026-03-29 · 3 obs
○ 2019-03-10 06:43:52
● 2026-03-05 19:40:14
● 2026-03-29 04:41:34
○A2a01:4f8:190:62f4::132019-03-10 → 2019-03-10 · 4 obs
○ 2017-02-07 12:36:30
● 2019-03-10 06:43:52
○ 2026-03-05 19:40:14
○ 2026-03-29 04:41:34
○A2a03:2900:7::162015-07-20 → 2017-02-07 · 4 obs
● 2015-07-20 10:40:34
● 2017-02-07 12:36:30
○ 2019-03-10 06:43:52
○ 2026-03-29 04:41:34
●A2a03:4000:61:ed28::23:22812026-03-05 → 2026-03-29 · 3 obs
○ 2019-03-10 06:43:52
● 2026-03-05 19:40:14
● 2026-03-29 04:41:34
○A78.47.59.1692019-03-10 → 2019-03-10 · 4 obs
○ 2017-02-07 12:36:30
● 2019-03-10 06:43:52
○ 2026-03-05 19:40:14
○ 2026-03-29 04:41:34

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
dea.nic.de, f.nic.de, z.nic.de-
fu4u.deroot-dns.netcup.net, third-dns.netcup.net, second-dns.netcup.net-

✅ Authoritative Response

Server:37.221.199.199

NS records: root-dns.netcup.net, third-dns.netcup.net, second-dns.netcup.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for fu4u.de (unsigned zone)

⏱️ Timing

Total: 1342ms | Queries: -

📄 Records

TypeCountSample Data
A1202.61.233.228
AAAA12a03:4000:61:ed28::23:2281
NS3second-dns.netcup.net, third-dns.netcup.net...
MX2mxe9e6.netcup.net (pri: 50), mail.fu4u.de (pri: 10)
TXT1v=spf1 mx a include:_spf.webhosting.syst
SOA1root-dns.netcup.net dnsadmin.netcup.net

Analysis

Hierarchy

The parent of mail.fu4u.de is fu4u.de.

IP Addresses

fu4u.de points to two IP numbers: 2a03:4000:61:ed28::23:2281 and 202.61.233.228.

Other host names such as app.viewsion.net, letzte-zuflucht.net, benemerenti.org, kromczynski.de and elibom.de share IPs with fu4u.de.

Name Servers

fu4u.de is delegated to three name servers: root-dns.netcup.net, second-dns.netcup.net and third-dns.netcup.net.

fu4u.de at least partially shares name servers with other domains, for instance danielwesthoff.info, pss20.com, indie-pictures.de, projectenmacher.de and wow-censored.eu.

Host root-dns.netcup.net points to 2a03:4000:0:1::e1e1 and 46.38.225.225; Host second-dns.netcup.net points to 2a03:4000:2:24b::c7c7 and 37.221.199.199; Host third-dns.netcup.net points to 2a03:4001:0:106::3f44 and 188.68.63.68.

Mail Servers

fu4u.de is handled by two mail servers: mail.fu4u.de and mxe9e6.netcup.net.

fu4u.de shares at least partially some mail servers with other domains, including andaria.de, rho-soft.com, rosalieundpalaver.de, pikola-richter.de and wheez.de.

these mail servers are commonly used together with mail.schwinne.de.

Host names with two IP numbers: mxe9e6.netcup.net points to 2a03:4000:0:22e:d8de:f2ff:fe3f:f966 and 202.61.233.230. Host names with one IP number: mail.fu4u.de points to 202.61.233.230. Host names that point to 202.61.233.230: mxe9e6.netcup.net and mail.fu4u.de.