coresystem.com.br - dns.ninja

`coresystem.com.br`

DNSSEC	⚠️ Not signed
A	191.252.4.25^{🇧🇷 Locaweb191.252.4.0/22 Servicos de Internet SA}
		PTR	`orion05.locaweb.com.br`
NS	`ns1.locaweb.com.br` ⭐
		A	2804:218:7000:0:186:202:8:254^{🇧🇷 Locaweb2804:218:7000::/48}
		A	186.202.8.254^{🇧🇷 Locaweb186.202.8.0/24 Servicos de Internet SA}
NS	`ns2.locaweb.com.br`
		A	2804:218:7001:0:187:45:248:254^{🇧🇷 Locaweb2804:218:7001::/48}
		A	187.45.248.254^{🇧🇷 Locaweb187.45.248.0/24 Servicos de Internet SA}
NS	`ns3.locaweb.com.br`
		A	2804:218:7002:0:189:126:101:254^{🇧🇷 Locaweb2804:218:7002::/48}
		A	189.126.101.254^{🇧🇷 Locaweb189.126.101.0/24 Servicos de Internet SA}
MX	`mx.a.locaweb.com.br` ⭐
		A	186.202.4.42^{🇧🇷 Locaweb186.202.0.0/19 Servicos de Internet SA}
			PTR	`mx.a.locaweb.com.br`
MX	`mx.b.locaweb.com.br` ⭐
		A	177.153.23.242^{🇧🇷 Locaweb177.153.0.0/19 Servicos de Internet SA}
			PTR	`mx.b.locaweb.com.br`
MX	`mx.jk.locaweb.com.br`⁽²⁰⁾
		A	200.234.204.130^{🇧🇷 Locaweb200.234.192.0/20 Servicos de Internet SA}
			PTR	`mx.jk.locaweb.com.br`
TXT	`v=spf1 include:_spf.locaweb.com.br ?all`
TXT	`MS=F4A212B89EF90F8EEB63B283A21AA62FD552F92F`
SOA	`ns1.locaweb.com.br`hostmaster@locaweb.com.br 2022-03-10 #1

`com.br`

	DNSSEC	⚠️ Not signed
	NS	`a.dns.br` ⭐ ⚠️ Not in parent delegation
	NS	`b.dns.br` ⚠️ Not in parent delegation
	NS	`c.dns.br` ⚠️ Not in parent delegation
	NS	`d.dns.br` ⚠️ Not in parent delegation
	NS	`e.dns.br` ⚠️ Not in parent delegation
	NS	`f.dns.br` ⚠️ Not in parent delegation
	SOA	`a.dns.br`hostmaster@registro.br serial=2026218184

rank #510679 globally
rank #3629 in the tld
WOT: SAFE (69/100)

Same first word

coresystem.net

coresystem.it

coresystem.co.jp

coresystem.mobi

coresystem.pro

coresystem.fr

coresystem.co.id

coresystem.com.br

coresystem.cloud

coresystem.org

coresystem.co.kr

coresystem.co

coresystem.in

coresystem.ru

coresystem.host

coresystem.kr

coresystem.space

Similar names

systemcore.tech

recosystem.co.kr

systemcore.cl

systemcore.biz

systemcore.com

systemcore.pro

ocrsysteme.de

creosystem.com

systemcore.be

systemcore.de

systemcore.net

systemcore.co.uk

systemcore.ru

systemcore.jp

DNS History

12 records (7 active, 5 former)

○NSns1.braslink.com2015-07-23 → 2016-04-06 · 4 obs

● 2015-07-23 05:06:20
● 2016-04-06 11:12:06
○ 2017-01-10 14:30:40
○ 2026-08-06 07:54:48

○NSns1.braslink.com.br2015-07-23 → 2016-04-06 · 4 obs

● 2015-07-23 05:06:20
● 2016-04-06 11:12:06
○ 2017-01-10 14:30:40
○ 2026-08-06 07:54:48

●NSns1.locaweb.com.br2017-01-10 → 2026-08-06 · 3 obs

○ 2016-04-06 11:12:06
● 2017-01-10 14:30:40
● 2026-08-06 07:54:48

○NSns2.braslink.net2015-07-23 → 2016-04-06 · 4 obs

● 2015-07-23 05:06:20
● 2016-04-06 11:12:06
○ 2017-01-10 14:30:40
○ 2026-08-06 07:54:48

●NSns2.locaweb.com.br2017-01-10 → 2026-08-06 · 3 obs

○ 2016-04-06 11:12:06
● 2017-01-10 14:30:40
● 2026-08-06 07:54:48

●NSns3.locaweb.com.br2017-01-10 → 2026-08-06 · 3 obs

○ 2016-04-06 11:12:06
● 2017-01-10 14:30:40
● 2026-08-06 07:54:48

○MXaracaju.braslink.com2015-07-23 → 2016-04-06 · 4 obs

● 2015-07-23 05:06:20
● 2016-04-06 11:12:06
○ 2017-01-10 14:30:40
○ 2026-08-06 07:54:48

●MXmx.a.locaweb.com.br2017-01-10 → 2026-08-06 · 6 obs

○ 2016-04-06 11:12:06
● 2017-01-10 14:30:40
● 2026-05-23 07:48:14
○ 2026-05-23 20:28:28
● 2026-05-23 23:09:10
● 2026-08-06 07:54:48

●MXmx.b.locaweb.com.br2017-01-10 → 2026-08-06 · 6 obs

○ 2016-04-06 11:12:06
● 2017-01-10 14:30:40
● 2026-05-23 07:48:14
○ 2026-05-23 20:28:28
● 2026-05-23 23:09:10
● 2026-08-06 07:54:48

●MXmx.jk.locaweb.com.br2017-01-10 → 2026-08-06 · 6 obs

○ 2016-04-06 11:12:06
● 2017-01-10 14:30:40
● 2026-05-23 07:48:14
○ 2026-05-23 20:28:28
● 2026-05-23 23:09:10
● 2026-08-06 07:54:48

●A191.252.4.252017-01-10 → 2026-08-06 · 3 obs

○ 2016-04-06 11:12:06
● 2017-01-10 14:30:40
● 2026-08-06 07:54:48

○A204.16.0.1672015-07-23 → 2016-04-06 · 4 obs

● 2015-07-23 05:06:20
● 2016-04-06 11:12:06
○ 2017-01-10 14:30:40
○ 2026-08-06 07:54:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
br	f.dns.br, d.dns.br, b.dns.br, e.dns.br...	-
coresystem.com.br	ns2.locaweb.com.br, ns1.locaweb.com.br, ns3.locaweb.com.br	6 records

✅ Authoritative Response

Server:189.126.101.254

NS records: ns2.locaweb.com.br, ns1.locaweb.com.br, ns3.locaweb.com.br

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coresystem.com.br (unsigned zone)

⏱️ Timing

Total: 537ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`191.252.4.25`
NS	3	`ns2.locaweb.com.br, ns1.locaweb.com.br...`
MX	3	`mx.a.locaweb.com.br (pri: 10), mx.jk.locaweb.com.br (pri: 20)...`
TXT	2	`v=spf1 include:_spf.locaweb.com.br ?all, MS=F4A212B89EF90F8EEB63B283A21AA62FD552F`
SOA	1	`ns1.locaweb.com.br hostmaster.locaweb.co`

📌 Glue Records Collected

Total: 6

Out-of-bailiwick: 6 (ns3.locaweb.com.br, ns2.locaweb.com.br, ns1.locaweb.com.br...)

Analysis

IP Addresses

coresystem.com.br has exactly one IP address — 191.252.4.25.

neofart.com.br, bretz.com.br, unisistemas.com plus two other host names have IP numbers in common with coresystem.com.br.

Name Servers

coresystem.com.br has three name servers — ns1.locaweb.com.br, ns2.locaweb.com.br and ns3.locaweb.com.br.

At least some of coresystem.com.br's name servers are shared with other domains, for example cirurgica4.com.br, unimate.com.br, esbd.com.br and two more.

Each of ns1.locaweb.com.br, ns2.locaweb.com.br and ns3.locaweb.com.br points to two IP numbers. ns1.locaweb.com.br points to 186.202.8.254 and 2804:218:7000:0:186:202:8:254. ns2.locaweb.com.br points to 187.45.248.254 and 2804:218:7001:0:187:45:248:254. ns3.locaweb.com.br points to 189.126.101.254 and 2804:218:7002:0:189:126:101:254.

Mail Servers

The MX records for coresystem.com.br list three mail servers: mx.a.locaweb.com.br, mx.b.locaweb.com.br and mx.jk.locaweb.com.br.

At least some of the mail servers used by coresystem.com.br are shared with other domains: libertus.org.br, administracao.com.br, agarb.com.br and two others among them.

These mail servers tend to be used in conjunction with the mail servers mx.core.locaweb.com.br.

Each of the three hostnames points to exactly one IP address: mx.a.locaweb.com.br points to 186.202.4.42, mx.b.locaweb.com.br points to 177.153.23.242 and mx.jk.locaweb.com.br points to 200.234.204.130.