🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`ns1.core3.com.br`

	DNSSEC	⚠️ Not signed
	A	131.0.246.242^{🇧🇷 UNSPECIFIED131.0.246.0/24 CLARO S.A. Customer}

`core3.com.br`

	DNSSEC	⚠️ Not signed
	A	131.0.244.145^{🇧🇷 UNSPECIFIED131.0.244.0/24 CLARO S.A. Customer}
	A	138.255.164.40^{🇧🇷 AS263993138.255.164.0/24}
	NS	`ns1.core3.com.br` ⭐
	NS	`ns2.core3.com.br`
	MX	`core3-com-br.mail.protection.outlook.com` ⭐
	TXT	`v=spf1 include:spf.protection.outlook.com -all`
	TXT	`MS=ms38020183`
	TXT	`apple-domain-verification=6sdCc8zOQ23RYYQJ`
	SOA	`ns1.core3.com.br`hostmaster@core3.com.br 2021-03-11 #0

📈 Tranco rank: #357,530

NS for

244.0.131.in-addr.arpa

245.0.131.in-addr.arpa

246.0.131.in-addr.arpa

164.255.138.in-addr.arpa

247.0.131.in-addr.arpa

core3.com.br

167.255.138.in-addr.arpa

166.255.138.in-addr.arpa

165.255.138.in-addr.arpa

Same first word

ns1.ws

ns1.nl

ns1.fj

ns1.potager.org

ns1.fit

ns1.gov.la

ns1.kg

ns1.fi.cloudplatform.fi

ns1.be

ns1.net.ph

ns1.tuxfamily.org

ns1.unicloud.pl

ns1.j.scaleforce.com.cy

ns1.lublin.pl

ns1.enscaled.sg

ns1.lt

ns1.group

ns1.co.nz

ns1.mcdir.ru

ns1.gob.cl

ns1.servehttp.com

ns1.co.za

ns1.host

ns1.gov.az

ns1.pa.gov.br

ns1.dev

ns1.help

ns1.store

ns1.rr.gov.br

ns1.carrd.co

ns1.re

ns1.az

ns1.onl

ns1.gov.ph

ns1.in-berlin.de

ns1.fastlylb.net

ns1.edu.tt

ns1.ai

ns1.pe.gov.br

ns1.biz

ns1.lu

ns1.ro.gov.br

ns1.yt

ns1.ac.gov.br

ns1.world

ns1.nic.in

ns1.vn.ua

ns1.pages.dev

ns1.tech

ns1.mk

ns1.to

ns1.asia

ns1.is-a.dev

ns1.live

ns1.uno

ns1.es.gov.br

ns1.jls-sto1.elastx.net

ns1.eu

ns1.li

ns1.jcloud.kz

ns1.nhs.uk

ns1.whm.nl-ams.scw.cloud

ns1.fm

ns1.us.reclaim.cloud

ns1.online

ns1.gr

ns1.tas.gov.au

ns1.vg

ns1.bz

ns1.df.gov.br

ns1.ie

ns1.systems

ns1.me

ns1.dsmynas.net

ns1.sakura.ne.jp

ns1.phx.enscaled.us

ns1.co.il

ns1.nic.tj

ns1.pw

ns1.cc

ns1.barsyonline.com

ns1.mobi

ns1.com.pa

ns1.rs.ba

ns1.primetel.cloud

ns1.by

ns1.gov.bh

ns1.ge

ns1.paas.hosted-by-previder.com

ns1.si

ns1.jelastic.saveincloud.net

ns1.altervista.org

ns1.v.ua

ns1.bio

ns1.gitapp.si

ns1.perspecta.cloud

ns1.ch.trendhosting.cloud

ns1.com.ru

ns1.pro

ns1.drud.us

Similar names

s1n.de

sn1.ch

s1n.net

sn1.xyz

s1n.com

n1s.us

s1n.space

1sn.com

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1ns.com.mx

n1s.ru

n1s.com.ph

1ns.one

1ns.pages.dev

s1n.eu

n1s.live

1sn.net.ph

1ns.com.tr

n1s.ph

s1n.dev

sn1.eu

1ns.workers.dev

sn1.games

1sn.ru

n1s.site

sn1.ph

1ns.net

s1n.gg

n1s.co.in

n1s.se

s1n.biz

s1n.com.mx

n1s.org.in

Previous names

mail.core-studio.com.br

mx.core2.com.br

www.core-builder.com.br

Next names

DNS History

1 record (1 active, 0 former)

●A131.0.246.2422017-09-04 → 2026-10-17 · 4 obs

● 2017-09-04 15:40:06
○ 2026-10-07 12:43:18
● 2026-10-08 11:23:56
● 2026-10-17 20:01:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
br	a.dns.br, b.dns.br, c.dns.br, d.dns.br...	12 records
core3.com.br	ns1.core3.com.br, ns2.core3.com.br	2 records

✅ Authoritative Response

Server:131.0.246.243

NS records: ns1.core3.com.br, ns2.core3.com.br

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

Root DNSKEY fetch failed: Error: connect EADDRNOTAVAIL 198.41.0.4:53 - Local (0.0.0.0:0)

⏱️ Timing

Total: 3579ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`131.0.246.242`

📌 Glue Records Collected

Total: 14

In-bailiwick: 14 (a.dns.br, b.dns.br, c.dns.br...)

Analysis

Name Server Role

ns1.core3.com.br acts as an authoritative name server for 244.0.131.in-addr.arpa, 245.0.131.in-addr.arpa, 246.0.131.in-addr.arpa, 164.255.138.in-addr.arpa, 247.0.131.in-addr.arpa and several other domains.

ns2.core3.com.br and ns1.core3.com.br are frequently seen together as name servers.

IP Addresses

ns1.core3.com.br resolves to one IP address: 131.0.246.242.

131.0.246.242.core3.com.br, for instance, is one of the other host names sharing IP numbers with ns1.core3.com.br.

ns1.core3.com.br - robtex.com

ns1.core3.com.br

core3.com.br