mail2.sefru.de - robtex.com

mail2.sefru.de

CNAMEmail.sefru.de
DNSSEC⚠️ Not signed
A2a01:4f9:3a:224c::112:112🇩🇪 Hetzner2a01:4f9::/32 HETZNER-IPv6-BLK
PTRmail.sefru.de
A135.181.180.71🇫🇮 Hetzner135.181.0.0/16 HETZNER-DC
MXmail.sefru.de ⭐
A2a01:4f9:3a:224c::112:112🇩🇪 Hetzner2a01:4f9::/32 HETZNER-IPv6-BLK
PTRmail.sefru.de
A135.181.180.71🇫🇮 Hetzner135.181.0.0/16 HETZNER-DC
PTRmail.sefru.de
TXTv=spf1 mx ip4:135.181.180.71 ip6:2a01:4f9:3a:224c::112:112 -all

sefru.de

DNSSEC⚠️ Not signed
A2a01:4f9:3a:224c::112:112🇩🇪 Hetzner2a01:4f9::/32 HETZNER-IPv6-BLK
A135.181.180.71🇫🇮 Hetzner135.181.0.0/16 HETZNER-DC
NSns1.first-ns.de ⭐
NSrobotns2.second-ns.de
NSrobotns3.second-ns.com
MXmail.sefru.de ⭐
TXTgoogle-site-verification=mt40ExC6FbKXylxryafnpoMALmXZv8jXaCn85JPzAGs
TXTv=spf1 mx ip4:135.181.180.71 ip6:2a01:4f9:3a:224c::112:112 -all
SOAns1.first-ns.dednsadmin@sefru.de 2025-12-17 #20
🔒 HSTS Preload (+subdomains)

Previously MX for

mail.sefru.de
sefru.de
mail2.sefru.de

Same first word

mail2.ras.ru
mail2.altervista.org
mail2.mil.ru
mail2.kinghost.net
mail2.mobi
mail2.eu
mail2.iki.fi
mail2.you
mail2.no-ip.org
mail2.dev
mail2.cloudapp.net
mail2.cz
mail2.me
mail2.hu
mail2.ph
mail2.ca
mail2.de
mail2.nhs.uk
mail2.im
mail2.df.gov.br
mail2.myfritz.net
mail2.com
mail2.dyndns.org
mail2.la
mail2.cloudaccess.net
mail2.email
mail2.duckdns.org
mail2.ru
mail2.net
mail2.gouv.ci
mail2.se
mail2.us
mail2.nl
mail2.in
mail2.ch
mail2.fi
mail2.xyz
mail2.name
mail2.dk
mail2.cn
mail2.app
mail2.sakura.ne.jp
mail2.cc
mail2.co
mail2.kapsi.fi
mail2.gov.pt
mail2.be
mail2.est.pr

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2mila.com
mila2.com
2mail.co.za
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a2mil.com
2mail.ro
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2mail.dk
2mail.serveftp.com
mi2la.de
lima2.com
alim2.com
2mail.io
mali2.com
2mail.pl
2mail.ru
2mail.space
2mail.com
2mail.net
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2mail.eu
2mail.pro
2mail.at
2mail.nl
2mail.im
ml2ai.com
2mail.co
2mail.de
2mila.it
2mail.fr

DNS History

3 records (1 active, 2 former)

20162017201820192020202120222023202420252026MXmail2.sefru.deA176.9.154.81CNAMEmail.sefru.de
○MXmail2.sefru.de2015-08-24 → 2016-03-25 · 4 obs
● 2015-08-24 14:50:40
● 2016-03-25 12:43:04
○ 2026-03-20 03:10:10
○ 2026-07-22 22:43:46
○A176.9.154.812015-08-24 → 2016-03-25 · 4 obs
● 2015-08-24 14:50:40
● 2016-03-25 12:43:04
○ 2026-03-20 03:10:10
○ 2026-07-22 22:43:46
●CNAMEmail.sefru.de2026-03-20 → 2026-07-22 · 2 obs
● 2026-03-20 03:10:10
● 2026-07-22 22:43:46

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
dea.nic.de, f.nic.de, z.nic.de-
sefru.derobotns3.second-ns.com, ns1.first-ns.de, robotns2.second-ns.de-

✅ Authoritative Response

Server:213.133.100.103

NS records: robotns3.second-ns.com, ns1.first-ns.de, robotns2.second-ns.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sefru.de (unsigned zone)

⏱️ Timing

Total: 1167ms | Queries: -

📄 Records

TypeCountSample Data
CNAME1mail.sefru.de

Analysis

IP Addresses

mail2.sefru.de directs to two IP numbers, 135.181.180.71 and 2a01:4f9:3a:224c::112:112

Among the host names that share IP numbers with mail2.sefru.de are www.bxx5.de, linschmann.com, merkens.info and two others.

Mail Servers

mail2.sefru.de routes its mail through a single mail server, mail.sefru.de.

mail2.sefru.de has the same mail server arrangement as a number of other domains, for example bxx5.de, sefru.com, mail.sefru.de and two more.

mail.sefru.de has two IP addresses: 135.181.180.71 and 2a01:4f9:3a:224c::112:112.