masterclass.co - dns.ninja

masterclass.co

DNSSEC⚠️ Not signed
A3.33.251.168🇺🇸 Amazon3.33.240.0/20
PTRaec037177372cc6cd.awsglobalaccelerator.com
A15.197.225.128🇺🇸 Amazon15.197.224.0/20
NSns15.domaincontrol.com ⭐
A2603:5:21b0::8🇺🇸 GODADDY-DNS2603:5:21b0::/44
PTRns15.domaincontrol.com
A97.74.107.8🇺🇸 GODADDY-DNS97.74.106.0/23
PTRns15.domaincontrol.com
NSns16.domaincontrol.com
A2603:5:22b0::8🇺🇸 GODADDY-DNS2603:5:22b0::/44
PTRns16.domaincontrol.com
A173.201.75.8🇺🇸 GODADDY-DNS173.201.74.0/23
PTRns16.domaincontrol.com
SOAns15.domaincontrol.comdns@jomax.net 2026-04-06 #1

co

DNSSEC⚠️ Not signed
NSns0.centralnic.net ⭐
NSa.registrydns.co
NSb.registrydns.co
NSc.registrydns.co
NSd.registrydns.co
SOAns0.centralnic.nethostmaster@centralnic.net serial=1759675672

Subdomains

www.masterclass.co

Same first word

masterclass.jp
masterclass.co.id
masterclass.dev
masterclass.agency
masterclass.world
masterclass.cc
masterclass.com
masterclass.net
masterclass.bg
masterclass.media
masterclass.today
masterclass.fr
masterclass.uz
masterclass.pt
masterclass.pk
masterclass.com.ua
masterclass.sydney
masterclass.ch
masterclass.cl
masterclass.am
masterclass.info
masterclass.it
masterclass.site
masterclass.se
masterclass.be
masterclass.co.uk
masterclass.dk
masterclass.courses
masterclass.co
masterclass.my
masterclass.ie
masterclass.ninja
masterclass.at
masterclass.com.hk
masterclass.de
masterclass.com.es
masterclass.com.mx
masterclass.az
masterclass.ng
masterclass.co.za
masterclass.lt
masterclass.us
masterclass.pl
masterclass.biz
masterclass.com.br
masterclass.hu
masterclass.eu
masterclass.edu.ge
masterclass.no
masterclass.team
masterclass.digital
masterclass.io
masterclass.al
masterclass.co.ke
masterclass.com.tr
masterclass.gr
masterclass.ca
masterclass.lv
masterclass.care
masterclass.kg

Similar names

slamactress.com
classmaster.co.uk
esmartclass.net
smartscales.ru
classstream.online
classmaster.ca
esmartclass.com
scarletmass.com
classmaster.eu
classmaster.com
classstream.com
classmaster.cz
smtcarsales.com
classmaster.in
classmaster.ru

DNS History

14 records (4 active, 10 former)

20162017201820192020202120222023202420252026NSns15.domaincontrol.comns16.domaincontrol.combuy.internettraffic.comns1.monikerdns.netns1.uniregistrymarket.linkns2.monikerdns.netns2.uniregistrymarket.linkns3.monikerdns.netns4.monikerdns.netsell.internettraffic.comA15.197.225.1283.33.251.16869.172.201.15369.172.201.208
○NSbuy.internettraffic.com2016-03-19 → 2016-07-16 · 5 obs
○ 2015-12-15 11:46:00
● 2016-03-19 02:21:00
● 2016-07-16 16:29:06
○ 2016-11-27 03:27:50
○ 2026-06-06 06:15:24
○NSns1.monikerdns.net2015-08-23 → 2015-12-15 · 4 obs
● 2015-08-23 13:46:20
● 2015-12-15 11:46:00
○ 2016-03-19 02:21:00
○ 2026-06-06 06:15:24
○NSns1.uniregistrymarket.link2016-11-27 → 2017-07-05 · 5 obs
○ 2016-07-16 16:29:06
● 2016-11-27 03:27:50
● 2017-07-05 23:02:14
○ 2026-02-15 04:53:06
○ 2026-06-06 06:15:24
●NSns15.domaincontrol.com2026-02-15 → 2026-06-06 · 3 obs
○ 2017-07-05 23:02:14
● 2026-02-15 04:53:06
● 2026-06-06 06:15:24
●NSns16.domaincontrol.com2026-02-15 → 2026-06-06 · 3 obs
○ 2017-07-05 23:02:14
● 2026-02-15 04:53:06
● 2026-06-06 06:15:24
○NSns2.monikerdns.net2015-08-23 → 2015-12-15 · 4 obs
● 2015-08-23 13:46:20
● 2015-12-15 11:46:00
○ 2016-03-19 02:21:00
○ 2026-06-06 06:15:24
○NSns2.uniregistrymarket.link2016-11-27 → 2017-07-05 · 5 obs
○ 2016-07-16 16:29:06
● 2016-11-27 03:27:50
● 2017-07-05 23:02:14
○ 2026-02-15 04:53:06
○ 2026-06-06 06:15:24
○NSns3.monikerdns.net2015-08-23 → 2015-12-15 · 4 obs
● 2015-08-23 13:46:20
● 2015-12-15 11:46:00
○ 2016-03-19 02:21:00
○ 2026-06-06 06:15:24
○NSns4.monikerdns.net2015-08-23 → 2015-12-15 · 4 obs
● 2015-08-23 13:46:20
● 2015-12-15 11:46:00
○ 2016-03-19 02:21:00
○ 2026-06-06 06:15:24
○NSsell.internettraffic.com2016-03-19 → 2016-07-16 · 5 obs
○ 2015-12-15 11:46:00
● 2016-03-19 02:21:00
● 2016-07-16 16:29:06
○ 2016-11-27 03:27:50
○ 2026-06-06 06:15:24
●A15.197.225.1282026-02-15 → 2026-06-06 · 3 obs
○ 2017-07-05 23:02:14
● 2026-02-15 04:53:06
● 2026-06-06 06:15:24
●A3.33.251.1682026-02-15 → 2026-06-06 · 3 obs
○ 2017-07-05 23:02:14
● 2026-02-15 04:53:06
● 2026-06-06 06:15:24
○A69.172.201.1532016-07-16 → 2017-07-05 · 5 obs
○ 2016-03-19 02:21:00
● 2016-07-16 16:29:06
● 2017-07-05 23:02:14
○ 2026-02-15 04:53:06
○ 2026-06-06 06:15:24
○A69.172.201.2082016-03-19 → 2016-03-19 · 3 obs
● 2016-03-19 02:21:00
○ 2016-07-16 16:29:06
○ 2026-06-06 06:15:24

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coa.registrydns.co, b.registrydns.co, c.registrydns.co, d.registrydns.co-
masterclass.cons16.domaincontrol.com, ns15.domaincontrol.com-

✅ Authoritative Response

Server:97.74.107.8

NS records: ns16.domaincontrol.com, ns15.domaincontrol.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for masterclass.co (unsigned zone)

⏱️ Timing

Total: 3174ms | Queries: -

📄 Records

TypeCountSample Data
A215.197.225.128, 3.33.251.168
NS2ns15.domaincontrol.com, ns16.domaincontrol.com
SOA1ns15.domaincontrol.com dns.jomax.net

Analysis

Hierarchy

www.masterclass.co is delegated beneath masterclass.co.

IP Addresses

masterclass.co points to two IP numbers: 3.33.251.168 and 15.197.225.128.

Additional host names — samosh.com, firstbooks.co.uk, perkakas.org and two others — share IP numbers with masterclass.co.

Name Servers

Two name servers handle the delegation for masterclass.co: ns15.domaincontrol.com and ns16.domaincontrol.com.

masterclass.co shares its name server setup with other domains, including mosquitofreeguaranteed.com, bettalion.com, areefcreation.com and two others.

ns15.domaincontrol.com and ns16.domaincontrol.com both carry two IP addresses. The A records for ns15.domaincontrol.com are 97.74.107.8 and 2603:5:21b0::8; the A records for ns16.domaincontrol.com are 173.201.75.8 and 2603:5:22b0::8.