🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`53.51.classcom.pl`

DNSSEC	⚠️ Not signed
A	195.150.51.53^{🇵🇱 CLASSCOM-AS195.150.48.0/20}
		PTR	`53.51.classcom.pl`

`51.classcom.pl`

DNSSEC

⚠️ Not signed

PTR for

53.51.150.195.in-addr.arpa

Same first word

53.net

53.net.au

53.group

53.fi

53.io

53.qa

53.gp

53.sk

53.ca

53.eu

53.lu

53.gs

53.nz

53.brussels

53.tips

53.pages.dev

53.ru

53.network

53.ro

53.de

53.am

53.fyi

53.su

53.pm

53.ie

53.au

53.synology.me

53.mobi

53.cc

53.cm

53.no

53.hopto.org

53.org

53.cl

53.ru.com

53.world

53.la

53.kz

53.app

53.lv

53.pl

53.chat

53.biz

53.pt

53.net.ph

53.amsterdam

53.be

53.co.uk

53.workers.dev

53.tf

53.fr

53.com.es

53.yt

53.com

53.kh.ua

53.nl

53.sb

53.wtf

53.org.tw

53.icu

53.ai

53.diskstation.me

53.co

53.rw

53.plus

53.dk

53.si

53.vg

53.in-addr.arpa

53.com.ph

53.se

53.lt

53.gen.tr

53.cn

53.com.cn

53.com.ar

53.tm

53.dev

53.mil

53.cz

53.ph

53.ag

53.org.ph

53.nu

53.hk

53.web.tr

53.vc

53.hu

53.com.tw

53.com.hk

53.gold

53.to

53.sa.com

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35.pm

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35.ro

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35.si

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35.icu

35.kz

35.no

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35.co.kr

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Previous names

Next names

DNS History

1 record (1 active, 0 former)

●A195.150.51.532017-06-11 → 2026-10-16 · 2 obs

● 2017-06-11 17:26:38
● 2026-10-16 10:56:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
pl	a-dns.pl, b-dns.pl, d-dns.pl, f-dns.pl...	-
classcom.pl	dns.classcom.pl, dns2.classcom.pl	4 records

✅ Authoritative Response

Server:2001:678:258::21

NS records: dns.classcom.pl, dns2.classcom.pl

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for classcom.pl (unsigned zone)

⏱️ Timing

Total: 3375ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`195.150.51.53`

📌 Glue Records Collected

Total: 4

In-bailiwick: 4 (dns.classcom.pl, dns2.classcom.pl, dns.classcom.pl...)

Analysis

IP Addresses

53.51.classcom.pl resolves to just one IP address, 195.150.51.53.

53.51.classcom.pl - robtex.com

53.51.classcom.pl

51.classcom.pl