masterclass.pl - dns.ninja

`masterclass.pl`

DNSSEC	🔒 Signed (DS record present)
A	185.253.212.22^{🇵🇱 AS48707-OPS-PL185.253.212.0/24}
NS	`ns1.aftermarket.pl` ⭐
		A	185.253.213.10^{🇵🇱 AS48707-OPS-PL185.253.213.0/24}
			PTR	`ns1.aftermarket.pl`
NS	`ns2.aftermarket.pl`
		A	185.253.214.10^{🇵🇱 AS48707-OPS-PL185.253.214.0/24}
			PTR	`ns2.aftermarket.pl`
MX	`blackhole.aftermarket.pl` ⭐
		A	185.237.29.29^{🇵🇱 AS48707-OPS-PL185.237.29.0/24}
TXT	`v=spf1 mx -all`
SOA	`ns1.aftermarket.pl`kontakt@aftermarket.pl serial=2505141619

`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=1780468462

Previously MX for

masterclass.pl

Same first word

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.surgery

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.agency

masterclass.world

masterclass.cc

masterclass.com

masterclass.net

Similar names

DNS History

15 records (4 active, 11 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
○ 2026-06-04 03:07:42

○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
○ 2026-06-04 03:07:42

○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
○ 2026-06-04 03:07:42

●NSns1.aftermarket.pl2026-02-15 → 2026-06-04 · 6 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
● 2026-06-04 03:07:42

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

● 2015-08-16 05:54:04
○ 2015-12-29 20:41:28
○ 2026-06-04 03:07:42

○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
○ 2026-06-04 03:07:42

●NSns2.aftermarket.pl2026-02-15 → 2026-06-04 · 6 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
● 2026-06-04 03:07:42

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

● 2015-08-16 05:54:04
○ 2015-12-29 20:41:28
○ 2026-06-04 03:07:42

○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
○ 2026-06-04 03:07:42

●MXblackhole.aftermarket.pl2026-02-15 → 2026-06-04 · 12 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 03:07:42

○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
○ 2026-06-04 03:07:42

●A185.253.212.222026-02-15 → 2026-06-04 · 12 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
○ 2026-06-04 03:07:42

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

● 2015-08-16 05:54:04
○ 2015-12-29 20:41:28
○ 2026-06-04 03:07:42

○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
○ 2026-06-04 03:07:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
pl	a-dns.pl, b-dns.pl, d-dns.pl, f-dns.pl...	-
masterclass.pl	ns1.aftermarket.pl, ns2.aftermarket.pl	-

✅ Authoritative Response

Server:185.253.213.10

NS records: ns1.aftermarket.pl, ns2.aftermarket.pl

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 769ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`185.253.212.22`
NS	2	`ns1.aftermarket.pl, ns2.aftermarket.pl`
MX	1	`blackhole.aftermarket.pl (pri: 10)`
TXT	1	`v=spf1 mx -all`
SOA	1	`ns1.aftermarket.pl kontakt.aftermarket.p`

Analysis

IP Addresses

masterclass.pl resolves to just one IP address, 185.253.212.22.

Two other host names, along with 185a25b149c146.greendata.pl, eltax.com.pl and 13-pra-14.acn.waw.pl, also share IP numbers with masterclass.pl.

Name Servers

masterclass.pl has two authoritative name servers — ns1.aftermarket.pl and ns2.aftermarket.pl.

masterclass.pl shares its NS records with other domains, for example spok.pl, getox.pl, ipogoda.pl and two others.

The name servers for masterclass.pl overlap at least in part with those of other domains, including xn--jdrzejczyk-enb.pl and seatrans.pl.

Both ns1.aftermarket.pl and ns2.aftermarket.pl have a single IP address each — ns1.aftermarket.pl resolves to 185.253.213.10 while ns2.aftermarket.pl resolves to 185.253.214.10.

Mail Servers

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

Among the domains sharing a mail server setup with masterclass.pl are apteczki.eu, rdd.pl, unf.pl and two others.

blackhole.aftermarket.pl points to one IP number — 185.237.29.29.