DNSWHOIS.INFO - checkos.com.br

Search for IP or hostnames:

checkos.com.br checked at 2025-10-06T17:13:39.632Z 587ms 123/123/123 100% R:15

`checkos.com.br`

MX	`mx1.improvmx.com`
		A	2a05:d012:412:e201:88aa:e7b9:7a43:12d7 ^{🇫🇷 Amazon}
		A	2a05:d012:412:e202:f36:2c1f:1a49:d38a ^{🇫🇷 Amazon}
		A	2a05:d012:412:e203:373a:f51a:4a85:1d25 ^{🇫🇷 Amazon}
		A	13.37.195.136^{🇫🇷 Amazon}
			PTR	`ec2-13-37-195-136.eu-west-3.compute.amazonaws.com`
		A	15.236.236.160^{🇫🇷 Amazon}
			PTR	`ec2-15-236-236-160.eu-west-3.compute.amazonaws.com`
		A	35.181.18.45^{🇫🇷 Amazon}
			PTR	`ec2-35-181-18-45.eu-west-3.compute.amazonaws.com`
MX	`mx2.improvmx.com`
		A	2a05:d012:412:e201:1f6e:f6e4:8fd7:4678 ^{🇫🇷 Amazon}
		A	2a05:d012:412:e202:e81e:cc44:3b53:8a3d ^{🇫🇷 Amazon}
		A	2a05:d012:412:e203:7e33:3d9c:28d7:ee20 ^{🇫🇷 Amazon}
		A	13.36.107.63^{🇫🇷 Amazon}
			PTR	`ec2-13-36-107-63.eu-west-3.compute.amazonaws.com`
		A	13.36.222.39^{🇫🇷 Amazon}
			PTR	`ec2-13-36-222-39.eu-west-3.compute.amazonaws.com`
		A	15.236.61.92^{🇫🇷 Amazon}
			PTR	`ec2-15-236-61-92.eu-west-3.compute.amazonaws.com`
NS	`a.sec.dns.br`
		A	2001:12ff::11 ^{🇧🇷 NIC.BR}
			PTR	`a.sec.dns.br`
		A	200.160.0.11^{🇧🇷 NIC.BR}
			PTR	`a.sec.dns.br`
NS	`b.sec.dns.br`
		A	2001:12f8:b:1::11 ^{🇧🇷 NIC.BR c.dns.br}
			PTR	`b.sec.dns.br`
		A	200.192.232.11^{🇧🇷 NIC.BR c.dns.br}
			PTR	`b.sec.dns.br`
A	5.189.138.77^{🇩🇪 Contabo}
		PTR	`vmi188885.contaboserver.net`

`com.br`

	NS	`a.dns.br`
	NS	`b.dns.br`
	NS	`c.dns.br`
	NS	`d.dns.br`
	NS	`e.dns.br`
	NS	`f.dns.br`

rank #558616 globally
rank #3482 in the tld

Starts with same word

checkos.net

checkos.com.br

checkos.com

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AI analysis

checkos.com.br points to a single IP number: 5.189.138.77.

Other host names such as checkos.net and vmi188885.contaboserver.net share IP numbers with checkos.com.br.

Delegation for checkos.com.br rests with two name servers, a.sec.dns.br and b.sec.dns.br.

checkos.com.br shares the same name server setup as other domains, including tortugaonline.com.br, somcomp.com.br, crroma.art.br, soforrofm.com.br and sysm.com.br.

checkos.com.br at least partially shares name servers with other domains, for instance muonline.net.br, indiga.com.br, thothi.com.br, plasticospolicom.com.br and tecweb.inf.br.

These name servers are commonly used with the name servers c.sec.dns.br.

Host names with two IP numbers: a.sec.dns.br points to 2001:12ff::11 and 200.160.0.11; b.sec.dns.br points to 2001:12f8:b:1::11 and 200.192.232.11.

checkos.com.br is handled by two mail servers: mx1.improvmx.com and mx2.improvmx.com.

checkos.com.br uses the same mail server configuration as other domains, such as timetracker.pro, shadyrainbow.com, manelli.org, enepom.com and tenzhiyang.com.

checkos.com.br shares mail servers with other domains, at least partially, for instance dartshub.com and jcofman.de.

Host names with six IP numbers: mx1.improvmx.com points to: 2a05:d012:412:e201:88aa:e7b9:7a43:12d7, 2a05:d012:412:e202:f36:2c1f:1a49:d38a, 2a05:d012:412:e203:373a:f51a:4a85:1d25, 13.37.195.136, 15.236.236.160 and 35.181.18.45. mx2.improvmx.com points to: 2a05:d012:412:e201:1f6e:f6e4:8fd7:4678, 2a05:d012:412:e202:e81e:cc44:3b53:8a3d, 2a05:d012:412:e203:7e33:3d9c:28d7:ee20, 13.36.107.63, 13.36.222.39 and 15.236.61.92.

dbq