`crbctelecom.com.br`

DNSSEC	🔒 Signed (DS record present)
A	164.163.196.22^{🇧🇷 AS265971164.163.196.0/24}
NS	`e.sec.dns.br` ⭐
		A	2001:12f8:b:1::14^{🇧🇷 C-DNS-BR2001:12f8:b::/48 Registro.BR Network (C.DNS.BR)}
			PTR	`e.sec.dns.br`
		A	200.192.232.14^{🇧🇷 C-DNS-BR200.192.232.0/24 Registro.BR Network (C.DNS.BR)}
			PTR	`e.sec.dns.br`
NS	`f.sec.dns.br`
		A	2001:12f8:9:1::14^{🇧🇷 B-DNS-BR2001:12f8:9::/48 Registro.BR Network (B.DNS.BR)}
			PTR	`f.sec.dns.br`
		A	200.189.40.14^{🇧🇷 B-DNS-BR200.189.40.0/24 Registro.BR Network (B.DNS.BR)}
			PTR	`f.sec.dns.br`
MX	`mail.crbctelecom.com.br` ⭐
		A	128.201.75.96^{🇧🇷 AS266618128.201.75.0/24 G8 Customer Proxy Route}
			PTR	`toronto.qzidc.com.br`
TXT	`v=spf1 ip4:128.201.75.96 ip4:128.201.75.116 ip4:128.201.74.116 +a +mx ~all`
SOA	`e.sec.dns.br`hostmaster@registro.br serial=2026218000

`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=2026226170

rank #527029 globally
rank #3633 in the tld
WOT: SAFE (69/100)

Subdomains

mail.crbctelecom.com.br

Same first word

crbctelecom.com.br

DNS History

4 records (4 active, 0 former)

●NSe.sec.dns.br2026-05-12 → 2026-08-14 · 2 obs

● 2026-05-12 04:07:42
● 2026-08-14 07:21:46

●NSf.sec.dns.br2026-05-12 → 2026-08-14 · 2 obs

● 2026-05-12 04:07:42
● 2026-08-14 07:21:46

●MXmail.crbctelecom.com.br2026-05-12 → 2026-08-14 · 2 obs

● 2026-05-12 04:07:42
● 2026-08-14 07:21:46

●A164.163.196.222026-05-12 → 2026-08-14 · 2 obs

● 2026-05-12 04:07:42
● 2026-08-14 07:21:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
br	a.dns.br, f.dns.br, e.dns.br, d.dns.br...	-
crbctelecom.com.br	f.sec.dns.br, e.sec.dns.br	-

✅ Authoritative Response

Server:200.189.40.14

NS records: f.sec.dns.br, e.sec.dns.br

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1648ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`164.163.196.22`
NS	2	`e.sec.dns.br, f.sec.dns.br`
MX	1	`mail.crbctelecom.com.br (pri: 0)`
TXT	1	`v=spf1 ip4:128.201.75.96 ip4:128.201.75.`
SOA	1	`e.sec.dns.br hostmaster.registro.br`

Analysis

Hierarchy

mail.crbctelecom.com.br is delegated beneath crbctelecom.com.br.

IP Addresses

crbctelecom.com.br directs to one IP number, which is 164.163.196.22.

Name Servers

crbctelecom.com.br uses two name servers for its delegation: e.sec.dns.br and f.sec.dns.br.

crbctelecom.com.br has the same name server delegation as a number of other domains, such as uibgroup.com.br, ciasoft.com.br, politorno.com.br and two more.

There is at least partial name server overlap between crbctelecom.com.br and other domains — dantec.com.br, vendoguardachuva.com.br, tucan.com.br and two more among them.

These name servers are routinely deployed together with the name servers d.sec.dns.br.

The two host names e.sec.dns.br and f.sec.dns.br each have a pair of IP addresses: e.sec.dns.br has 200.192.232.14 and 2001:12f8:b:1::14, and f.sec.dns.br has 200.189.40.14 and 2001:12f8:9:1::14.

Mail Servers

crbctelecom.com.br routes its mail through a single mail server, mail.crbctelecom.com.br.

mail.crbctelecom.com.br directs to just one IP number, 128.201.75.96.

crbctelecom.com.br - robtex.com