dufour.lu - robtex.com

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

dufour.lu

DNSSEC⚠️ Not signed
A213.135.234.218🇱🇺 EPT-LU213.135.224.0/19 PT-LU
NSnsa.planethoster.net ⭐
A199.188.223.3🇨🇦 PLANETHOSTER199.188.223.0/24 arin allocation
PTRnsa.planethoster.net
NSnsb.planethoster.net
A85.236.159.3🇫🇷 PLANETHOSTER85.236.159.0/24 PlanetHoster Anycast
PTRnsb.planethoster.net
NSnsc.planethoster.net
A185.22.111.3🇫🇷 PLANETHOSTER185.22.111.0/24 PlanetHoster Anycast
PTRnsc.planethoster.net
MXdufour-lu.mail.protection.outlook.com ⭐
A2a01:111:f403:ca04::b🇮🇪 Microsoft2a01:111:f000::/36
PTRmail-dbbpr03cu00103.inbound.protection.outlook.com
A2a01:111:f403:ca04::c🇮🇪 Microsoft2a01:111:f000::/36
PTRmail-db9pr02cu00204.inbound.protection.outlook.com
A2a01:111:f403:ca09::1🇳🇱 Microsoft2a01:111:f000::/36
PTRmail-as9pr07cu00301.inbound.protection.outlook.com
A2a01:111:f403:ca09::3🇳🇱 Microsoft2a01:111:f000::/36
PTRmail-am6pr04cu00303.inbound.protection.outlook.com
A52.101.68.5🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-du2pr03cu00105.inbound.protection.outlook.com
A52.101.68.16🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-db4pr02cu00400.inbound.protection.outlook.com
A52.101.68.39🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-db7pr03cu00607.inbound.protection.outlook.com
A52.101.73.28🇳🇱 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-am7pr05cu00204.inbound.protection.outlook.com
TXTMS=ms32488644
TXTv=spf1 include:spf.protection.outlook.com -all
SOAnsa.planethoster.netreports@support.planethoster.info 2026-08-15 #7

lu

DNSSEC🔒 Signed (DS record present)
NS1.ns.lu ⭐
NSg.dns.lu
NSi.dns.lu
NSj.dns.lu
NSk.dns.lu
NSp.dns.lu
NSr.ns.lu
TXTExported: 2026-08-16 01:01:01
SOA1.ns.lunoc@restena.lu serial=1786834872

Subdomains

www.dufour.lu
server2.dufour.lu
server1.dufour.lu

Same first word

dufour.cn
dufour.one
dufour.dk
dufour.org.uk
dufour.lu
dufour.com
dufour.ch
dufour.net
dufour.education
dufour.eu
dufour.online
dufour.be
dufour.ca
dufour.aero
dufour.biz
dufour.immo
dufour.us
dufour.cool
dufour.de
dufour.at
dufour.tv
dufour.fr
dufour.info

Similar names

urfodu.ru
udforu.org
fourdu.com
doufur.com

DNS History

7 records (5 active, 2 former)

201820192020202120222023202420252026NSnsa.planethoster.netnsb.planethoster.netnsc.planethoster.netMXdufour-lu.mail.protection.outlook.comserver1.dufour.luserver2.dufour.luA213.135.234.218
●NSnsa.planethoster.net2017-08-01 → 2026-08-15 · 2 obs
● 2017-08-01 17:50:56
● 2026-08-15 23:19:46
●NSnsb.planethoster.net2017-08-01 → 2026-08-15 · 2 obs
● 2017-08-01 17:50:56
● 2026-08-15 23:19:46
●NSnsc.planethoster.net2017-08-01 → 2026-08-15 · 2 obs
● 2017-08-01 17:50:56
● 2026-08-15 23:19:46
●MXdufour-lu.mail.protection.outlook.com2026-03-27 → 2026-08-15 · 3 obs
○ 2017-08-01 17:50:56
● 2026-03-27 21:25:18
● 2026-08-15 23:19:46
○MXserver1.dufour.lu2017-08-01 → 2017-08-01 · 3 obs
● 2017-08-01 17:50:56
○ 2026-03-27 21:25:18
○ 2026-08-15 23:19:46
○MXserver2.dufour.lu2017-08-01 → 2017-08-01 · 3 obs
● 2017-08-01 17:50:56
○ 2026-03-27 21:25:18
○ 2026-08-15 23:19:46
●A213.135.234.2182017-08-01 → 2026-08-15 · 2 obs
● 2017-08-01 17:50:56
● 2026-08-15 23:19:46

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
luj.dns.lu, r.ns.lu, k.dns.lu, g.dns.lu...14 records
dufour.lunsa.planethoster.net, nsb.planethoster.net, nsc.planethoster.net-

✅ Authoritative Response

Server:185.22.111.3

NS records: nsa.planethoster.net, nsb.planethoster.net, nsc.planethoster.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dufour.lu (unsigned zone)

⏱️ Timing

Total: 811ms | Queries: -

📄 Records

TypeCountSample Data
A1213.135.234.218
NS3nsb.planethoster.net, nsa.planethoster.net...
MX1dufour-lu.mail.protection.outlook.com (p
TXT2MS=ms32488644, v=spf1 include:spf.protection.outlook.co
SOA1nsa.planethoster.net reports.support.pla

📌 Glue Records Collected

Total: 14

In-bailiwick: 14 (1.ns.lu, g.dns.lu, i.dns.lu...)

Analysis

Hierarchy

www.dufour.lu, server2.dufour.lu and server1.dufour.lu each fall under the parent domain dufour.lu.

IP Addresses

dufour.lu resolves to just one IP address, 213.135.234.218.

server1.dufour.lu, for instance, is one of the other host names sharing IP numbers with dufour.lu.

Name Servers

The authoritative name servers for dufour.lu are nsa.planethoster.net, nsb.planethoster.net and nsc.planethoster.net — three in total.

dufour.lu partially shares its NS delegation with several other domains, including apistore.fr, planete-hosteur.org, business-automatique.com and two others.

The hostnames nsa.planethoster.net, nsb.planethoster.net and nsc.planethoster.net each resolve to a single IP: nsa.planethoster.net → 199.188.223.3, nsb.planethoster.net → 85.236.159.3, nsc.planethoster.net → 185.22.111.3.

Mail Servers

The sole mail server for dufour.lu is dufour-lu.mail.protection.outlook.com.

With 8 IP addresses total, dufour-lu.mail.protection.outlook.com resolves to 52.101.68.5, 52.101.68.16, 52.101.68.39 and 5 others.