masterclass.pl - dns.ninja

`masterclass.pl`

DNSSEC	⚠️ Not signed
A	195.78.67.57^{🇵🇱 CF-GDA195.78.66.0/23}
		PTR	`s179.cyber-folks.pl`
NS	`ns1.cyberfolks.pl` ⭐
		A	94.152.254.111^{🇵🇱 OXYLION-AS94.152.254.0/24}
			PTR	`ns1.cyberfolks.pl`
NS	`ns2.cyberfolks.pl`
		A	94.152.255.111^{🇵🇱 OXYLION-AS94.152.255.0/24}
			PTR	`ns2.cyberfolks.pl`
NS	`ns3.cyberfolks.pl`
		A	94.152.254.161^{🇵🇱 OXYLION-AS94.152.254.0/24}
			PTR	`ns3.cyberfolks.pl`
MX	`mail.masterclass.pl` ⭐
		A	195.78.67.57^{🇵🇱 CF-GDA195.78.66.0/23}
			PTR	`s179.cyber-folks.pl`
TXT	`baaa7047209fab648e6e98381dddf245165358a273f23e2917e14425d6c73a8`
TXT	`v=spf1 a mx include:_spf.cyberfolks.pl -all`
SOA	`ns1.cyberfolks.pl`hostmaster@masterclass.pl 2026-06-24 #3

`pl`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a-dns.pl` ⭐
	NS	`b-dns.pl`
	NS	`d-dns.pl`
	NS	`f-dns.pl`
	NS	`h-dns.pl`
	NS	`j-dns.pl`
	TXT	`ccTLD of Poland`
	SOA	`a-dns.pl`dnsmaster@nask.pl serial=1784788475

Previously MX for

masterclass.pl

Subdomains

mail.masterclass.pl

Same first word

masterclass.bg

masterclass.media

masterclass.today

masterclass.fr

masterclass.uz

masterclass.je

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

masterclass.jp

masterclass.co.id

masterclass.dev

masterclass.world

masterclass.cc

masterclass.com

masterclass.net

Similar names

DNS History

20 records (5 active, 15 former)

○NSdns.home.pl2016-11-01 → 2017-11-25 · 5 obs

○ 2016-04-08 02:52:34
● 2016-11-01 04:00:48
● 2017-11-25 00:30:38
○ 2026-02-15 14:11:36
○ 2026-07-24 01:31:28

○NSdns2.home.pl2016-11-01 → 2017-11-25 · 5 obs

○ 2016-04-08 02:52:34
● 2016-11-01 04:00:48
● 2017-11-25 00:30:38
○ 2026-02-15 14:11:36
○ 2026-07-24 01:31:28

○NSdns3.home.pl2016-11-01 → 2017-11-25 · 5 obs

○ 2016-04-08 02:52:34
● 2016-11-01 04:00:48
● 2017-11-25 00:30:38
○ 2026-02-15 14:11:36
○ 2026-07-24 01:31:28

○NSns1.aftermarket.pl2026-02-15 → 2026-06-12 · 8 obs

○ 2017-11-25 00:30:38
● 2026-02-15 14:11:36
● 2026-03-08 14:54:02
○ 2026-03-09 02:05:58
● 2026-04-06 05:14:16
● 2026-06-12 13:34:54
○ 2026-07-14 00:48:04
○ 2026-07-24 01:31:28

●NSns1.cyberfolks.pl2026-07-14 → 2026-07-24 · 3 obs

○ 2026-06-12 13:34:54
● 2026-07-14 00:48:04
● 2026-07-24 01:31:28

○NSns1.domenos.pl2015-08-16 → 2015-08-16 · 3 obs

● 2015-08-16 05:54:04
○ 2015-12-29 20:41:28
○ 2026-07-24 01:31:28

○NSns1.premium.pl2015-12-29 → 2016-04-08 · 5 obs

○ 2015-08-16 05:54:04
● 2015-12-29 20:41:28
● 2016-04-08 02:52:34
○ 2016-11-01 04:00:48
○ 2026-07-24 01:31:28

○NSns2.aftermarket.pl2026-02-15 → 2026-06-12 · 8 obs

○ 2017-11-25 00:30:38
● 2026-02-15 14:11:36
● 2026-03-08 14:54:02
○ 2026-03-09 02:05:58
● 2026-04-06 05:14:16
● 2026-06-12 13:34:54
○ 2026-07-14 00:48:04
○ 2026-07-24 01:31:28

●NSns2.cyberfolks.pl2026-07-14 → 2026-07-24 · 3 obs

○ 2026-06-12 13:34:54
● 2026-07-14 00:48:04
● 2026-07-24 01:31:28

○NSns2.domenos.pl2015-08-16 → 2015-08-16 · 3 obs

● 2015-08-16 05:54:04
○ 2015-12-29 20:41:28
○ 2026-07-24 01:31:28

○NSns2.premium.pl2015-12-29 → 2016-04-08 · 5 obs

○ 2015-08-16 05:54:04
● 2015-12-29 20:41:28
● 2016-04-08 02:52:34
○ 2016-11-01 04:00:48
○ 2026-07-24 01:31:28

●NSns3.cyberfolks.pl2026-07-14 → 2026-07-24 · 3 obs

○ 2026-06-12 13:34:54
● 2026-07-14 00:48:04
● 2026-07-24 01:31:28

○MXblackhole.aftermarket.pl2026-02-15 → 2026-06-04 · 14 obs

○ 2017-11-25 00:30:38
● 2026-02-15 14:11:36
● 2026-03-08 14:54:02
○ 2026-03-09 02:05:58
● 2026-04-06 05:14:16
● 2026-04-15 10:16:04
○ 2026-04-15 16:36:58
● 2026-04-26 15:49:48
● 2026-04-30 17:47:14
○ 2026-05-01 08:35:00
● 2026-06-04 03:07:40
● 2026-06-04 09:44:54
○ 2026-06-12 13:34:54
○ 2026-07-24 01:31:28

●MXmail.masterclass.pl2026-07-14 → 2026-07-24 · 3 obs

○ 2026-06-12 13:34:54
● 2026-07-14 00:48:04
● 2026-07-24 01:31:28

○MXmasterclass.pl2016-11-01 → 2017-11-25 · 4 obs

● 2016-11-01 04:00:48
● 2017-11-25 00:30:38
○ 2026-02-15 14:11:36
○ 2026-07-24 01:31:28

○A185.253.212.222026-02-15 → 2026-06-04 · 14 obs

○A188.128.255.2512015-12-29 → 2016-04-08 · 5 obs

○ 2015-08-16 05:54:04
● 2015-12-29 20:41:28
● 2016-04-08 02:52:34
○ 2016-11-01 04:00:48
○ 2026-07-24 01:31:28

●A195.78.67.572026-07-14 → 2026-07-24 · 3 obs

○ 2026-06-12 13:34:54
● 2026-07-14 00:48:04
● 2026-07-24 01:31:28

○A31.186.84.1582015-08-16 → 2015-08-16 · 3 obs

● 2015-08-16 05:54:04
○ 2015-12-29 20:41:28
○ 2026-07-24 01:31:28

○A79.96.2.2312016-11-01 → 2017-11-25 · 5 obs

○ 2016-04-08 02:52:34
● 2016-11-01 04:00:48
● 2017-11-25 00:30:38
○ 2026-02-15 14:11:36
○ 2026-07-24 01:31:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
pl	a-dns.pl, b-dns.pl, d-dns.pl, f-dns.pl...	-
masterclass.pl	ns1.cyberfolks.pl, ns2.cyberfolks.pl, ns3.cyberfolks.pl	3 records

✅ Authoritative Response

Server:94.152.254.161

NS records: ns1.cyberfolks.pl, ns2.cyberfolks.pl, ns3.cyberfolks.pl

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for masterclass.pl (unsigned zone)

⏱️ Timing

Total: 342ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`195.78.67.57`
NS	3	`ns1.cyberfolks.pl, ns2.cyberfolks.pl...`
MX	1	`mail.masterclass.pl (pri: 10)`
TXT	2	`baaa7047209fab648e6e98381dddf245165358a2, v=spf1 a mx include:_spf.cyberfolks.pl -`
SOA	1	`ns1.cyberfolks.pl hostmaster.masterclass`

📌 Glue Records Collected

Total: 3

Out-of-bailiwick: 3 (ns1.cyberfolks.pl, ns2.cyberfolks.pl, ns3.cyberfolks.pl)

Analysis

Hierarchy

mail.masterclass.pl is a subdomain of masterclass.pl.

IP Addresses

masterclass.pl resolves to just one IP address, 195.78.67.57.

Two other host names, along with greendom.pl, hotailor.com and muzycznakurtyna.pl, also share IP numbers with masterclass.pl.

Name Servers

masterclass.pl has three name servers — ns1.cyberfolks.pl, ns2.cyberfolks.pl and ns3.cyberfolks.pl.

The name servers of masterclass.pl overlap at least partially with those of other domains — among them ecolabad.pl, businesscare.pl, wina.pl and two more.

These name servers commonly appear in delegations together with ns2.hekko.net.pl, ns1.hekko.net.pl, dns1.linuxpl.com and 4 other.

Each of the three hostnames points to exactly one IP address: ns1.cyberfolks.pl points to 94.152.254.111, ns2.cyberfolks.pl points to 94.152.255.111 and ns3.cyberfolks.pl points to 94.152.254.161.

Mail Servers

The sole mail server for masterclass.pl is mail.masterclass.pl.

mail.masterclass.pl points to one IP number — 195.78.67.57.