masterclassdedokter.nl - robtex.com

masterclassdedokter.nl

DNSSEC⚠️ Not signed
A195.128.8.137🇳🇱 Springer-Nature195.128.8.0/22
NSpdns1.ultradns.net ⭐
A2001:502:f3ff::1🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar
PTRpdns1.ultradns.net
A204.74.108.1🇺🇸 MAINT-ID-12008204.74.108.0/24 Neustar
PTRpdns1.ultradns.net
NSpdns2.ultradns.net
A2610:a1:1014::1🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar
PTRpdns2.ultradns.net
A204.74.109.1🇺🇸 MAINT-ID-12008204.74.109.0/24 Neustar
PTRpdns2.ultradns.net
NSpdns3.ultradns.org
A2610:a1:1015::1🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar
PTRpdns3.ultradns.org
A199.7.68.1🇺🇸 MAINT-ID-12008199.7.68.0/24 Neustar
PTRpdns3.ultradns.org
NSpdns4.ultradns.org
A2001:502:4612::1🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar
PTRpdns4.ultradns.org
A199.7.69.1🇺🇸 MAINT-ID-12008199.7.69.0/24 Neustar
PTRpdns4.ultradns.org
NSpdns5.ultradns.info
A2610:a1:1016::1🇺🇸 MAINT-ID-120082610:a1:1016::/48 Neustar
PTRpdns5.ultradns.info
A204.74.114.1🇺🇸 MAINT-ID-12008204.74.114.0/24 Neustar
PTRpdns5.ultradns.info
NSpdns6.ultradns.co.uk
A2610:a1:1017::1🇺🇸 MAINT-ID-120082610:a1:1017::/48 Neustar
PTRpdns6.ultradns.co.uk
A204.74.115.1🇺🇸 MAINT-ID-12008204.74.115.0/24 Neustar
PTRpdns6.ultradns.co.uk
SOApdns1.ultradns.nethostmaster@springernature.com 2021-09-14 #8

nl

DNSSEC🔒 Signed (DS record present)
NSns1.dns.nl ⭐
NSns3.dns.nl
NSns4.dns.nl
TXTnl zone update: 2026-04-03 01:00:01 +0000 (EPOCH 1775178001)
SOAns1.dns.nldns@sidn.nl 2026-04-03 #2

Same first word

masterclassdedokter.nl

DNS History

7 records (7 active, 0 former)

NSpdns1.ultradns.netpdns2.ultradns.netpdns3.ultradns.orgpdns4.ultradns.orgpdns5.ultradns.infopdns6.ultradns.co.ukA195.128.8.137
●NSpdns1.ultradns.net2026-02-21 → 2026-04-03 · 2 obs
● 2026-02-21 16:11:12
● 2026-04-03 01:33:24
●NSpdns2.ultradns.net2026-02-21 → 2026-04-03 · 2 obs
● 2026-02-21 16:11:12
● 2026-04-03 01:33:24
●NSpdns3.ultradns.org2026-02-21 → 2026-04-03 · 2 obs
● 2026-02-21 16:11:12
● 2026-04-03 01:33:24
●NSpdns4.ultradns.org2026-02-21 → 2026-04-03 · 2 obs
● 2026-02-21 16:11:12
● 2026-04-03 01:33:24
●NSpdns5.ultradns.info2026-02-21 → 2026-04-03 · 2 obs
● 2026-02-21 16:11:12
● 2026-04-03 01:33:24
●NSpdns6.ultradns.co.uk2026-02-21 → 2026-04-03 · 2 obs
● 2026-02-21 16:11:12
● 2026-04-03 01:33:24
●A195.128.8.1372026-02-21 → 2026-04-03 · 2 obs
● 2026-02-21 16:11:12
● 2026-04-03 01:33:24

🔍 DNS Trace

Analysis

IP Addresses

masterclassdedokter.nl maps to IP address 195.128.8.137.

Other host names, for instance onlinenascholing.nu, bohn.nl, chirurgie-congres.nl, medilect.nl and diabeteszorgcongres.nl share IP numbers with masterclassdedokter.nl.

Name Servers

masterclassdedokter.nl delegates to six name servers: pdns5.ultradns.info, pdns1.ultradns.net, pdns2.ultradns.net, pdns3.ultradns.org, pdns4.ultradns.org and pdns6.ultradns.co.uk.

masterclassdedokter.nl at least partially shares name servers with other domains such as zagbank.ca, naturelabs.com, earth-planets-space.com, expediaconsulting.net and richardallenscientific.com.

these name servers are commonly used with udns1.ultradns.net, udns2.ultradns.net, dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net and dns4.p01.nsone.net.

Host names with two IP numbers:

pdns5.ultradns.info points to: 2610:a1:1016::1 and 204.74.114.1.

pdns1.ultradns.net points to: 2001:502:f3ff::1 and 204.74.108.1.

pdns2.ultradns.net points to: 2610:a1:1014::1 and 204.74.109.1.

pdns3.ultradns.org points to: 2610:a1:1015::1 and 199.7.68.1.

pdns4.ultradns.org points to: 2001:502:4612::1 and 199.7.69.1.

pdns6.ultradns.co.uk points to: 2610:a1:1017::1 and 204.74.115.1.