`master.blue4u.pl`

DNSSEC	⚠️ Not signed
A	2.57.137.48^{🇵🇱 PL-BEYOND-AS2.57.136.0/22}
		PTR	`s48.zenbox.pl`

`blue4u.pl`

	DNSSEC	⚠️ Not signed
	A	2.57.137.48^{🇵🇱 PL-BEYOND-AS2.57.136.0/22}
	NS	`ns1.zenbox.pl` ⭐
	NS	`ns2.zenbox.pl`
	MX	`mx1.zenbox.pl` ⭐
	MX	`mx2.zenbox.pl`⁽²⁰⁾
	MX	`mx3.zenbox.pl`⁽³⁰⁾
	TXT	`v=spf1 a mx include:_spf.zenbox.pl -all`
	SOA	`ns1.zenbox.pl`kontakt@zenbox.pl 2024-06-03 #0

Previously NS for

cht.pl

rob-instal.com.pl

a77.pl

pabianmed.pl

big.net.pl

gratka.net.pl

moto-hurt.com.pl

art-rama.pl

infobank.com.pl

swiatkarnawalu.pl

Same first word

master.shop

master.org.br

master.tychy.pl

master.bet

master.sh.cn

master.km.ua

master.support

master.ro

master.com.pe

master.tube

master.net.pl

master.ch

master.am

master.systems

master.vin

master.co.uk

master.com.ua

master.vn

master.org

master.al

master.dj

master.com.tr

master.clinic

master.chat

master.net.my

master.la

master.tips

master.se

master.uz

master.ms

master.mn

master.org.ua

master.com.kz

master.ca

master.reviews

master.report

master.media

master.ee

master.me

master.com.au

master.nu

master.uk

master.ae

master.run

master.tools

master.cn.ua

master.ru

master.lublin.pl

master.recipes

master.de.com

master.az

master.live

master.com.co

master.awsapps.com

master.cash

master.plus

master.msk.ru

master.co.ua

master.ky

master.ua

master.link

master.eu

master.it

master.inf.br

master.co.kr

master.sklep.pl

master.cafe

master.ventures

master.name

master.fm

master.photography

master.tv.br

master.tel

master.es

master.gr

master.as

master.rv.ua

master.ma

master.net.ru

master.to

master.web.tr

master.co

master.mx

master.dk

master.art.br

master.co.nz

master.cz

master.edu.pl

master.lk

master.org.il

master.or.at

master.africa

master.finance

master.co.il

master.works

master.codes

master.events

master.com.br

master.cool

master.com.gr

Similar names

master.com.es

marset.sk

semtra.de

matres.net

srteam.be

master.group

ramset.com.au

stream.lv

smarte.rs

master.agr.br

master.com

stream.vercel.app

master.tw

stream.gifts

sermat.com

termas.cl

tamser.com.tr

rmeats.com

stemar.eu

stream.co.kr

mstera.com

mestra.com

amrest.us

trames.org

tamers.it

maters.com

stream.fm

mestra.it

semart.co.za

stream.zone

esmart.ro

termas.com.ec

emstar.sk

master.web.id

stream.community

rsteam.eu

esmart.shop

esmart.sk

master.world

master.com.pk

smarte.cz

starme.de

stream.net.nz

starme.dk

stream.it

metras.lt

tremsa.com.mx

stream.school.nz

master.us

rteams.org

tamers.ru

martes.cz

master.parts

rsteam.ru

stream.chat

stemar.com.pl

esmart.in

emstar.co.kr

esmart.pk

starme.co

stream.digital

stemar.net

stream.be

metras.de

master.jp

stream.run

semart.si

samter.de

stream.us

master.no

strema.us

stream.aero

stream.co.jp

master.kz

asterm.mx

smetra.com

stream.uz

tsmera.ru

smarte.pl

maters.demon.nl

mestar.fi

smetra.mc

treams.ch

martes.co.uk

master.me.it

master.de

master.com.pl

rsteam.pt

master.dnsalias.net

master.su

ramset.ru

stamer.ru

amster.co.in

trames.io

master.training

stream.fashion

amrest.fr

amster.de

master.vg

martes.mx

DNS History

8 records (1 active, 7 former)

○NSdns.home.pl2016-12-19 → 2017-01-06 · 4 obs

● 2016-12-19 23:38:22
● 2017-01-06 15:22:54
○ 2017-10-31 22:46:50
○ 2026-07-12 01:34:30

○NSdns2.home.pl2016-12-19 → 2017-01-06 · 4 obs

● 2016-12-19 23:38:22
● 2017-01-06 15:22:54
○ 2017-10-31 22:46:50
○ 2026-07-12 01:34:30

○NSdns3.home.pl2016-12-19 → 2017-01-06 · 4 obs

● 2016-12-19 23:38:22
● 2017-01-06 15:22:54
○ 2017-10-31 22:46:50
○ 2026-07-12 01:34:30

○MXblue4u.pl2016-12-19 → 2017-01-06 · 4 obs

● 2016-12-19 23:38:22
● 2017-01-06 15:22:54
○ 2017-10-31 22:46:50
○ 2026-07-12 01:34:30

○A188.128.210.992016-12-19 → 2017-01-06 · 5 obs

○ 2016-06-03 17:13:46
● 2016-12-19 23:38:22
● 2017-01-06 15:22:54
○ 2017-10-31 22:46:50
○ 2026-07-12 01:34:30

●A2.57.137.482026-03-07 → 2026-07-12 · 6 obs

○ 2017-10-31 22:46:50
● 2026-03-07 22:28:50
● 2026-03-09 03:44:36
○ 2026-04-04 15:56:08
● 2026-07-02 22:44:18
● 2026-07-12 01:34:30

○A217.76.127.2502015-07-08 → 2016-06-03 · 4 obs

● 2015-07-08 04:02:26
● 2016-06-03 17:13:46
○ 2016-12-19 23:38:22
○ 2026-07-12 01:34:30

○CNAMEblue4u.pl2016-12-19 → 2017-10-31 · 4 obs

● 2016-12-19 23:38:22
● 2017-10-31 22:46:50
○ 2026-03-07 22:28:50
○ 2026-07-12 01:34:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
pl	j-dns.pl, d-dns.pl, a-dns.pl, b-dns.pl...	-
blue4u.pl	ns2.zenbox.pl, ns1.zenbox.pl	2 records

✅ Authoritative Response

Server:94.152.254.108

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for blue4u.pl (unsigned zone)

⏱️ Timing

Total: 466ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`2.57.137.48`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns2.zenbox.pl, ns1.zenbox.pl)

Analysis

IP Addresses

master.blue4u.pl points to a single IP number: 2.57.137.48.

Additional host names — negustor.pl, www.sep.lublin.pl, multigrass.pl and two others — share IP numbers with master.blue4u.pl.

master.blue4u.pl - robtex.com

master.blue4u.pl

blue4u.pl

Previously NS for

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

`master.blue4u.pl`

`blue4u.pl`