`mail.tsrtech.com.br`

DNSSEC	⚠️ Not signed
A	45.239.137.69^{🇧🇷 AS26836245.239.137.0/24}
		PTR	`srv1.rnet.com.br`

`tsrtech.com.br`

	DNSSEC	🔒 Signed (DS record present)
	A	45.239.137.69^{🇧🇷 AS26836245.239.137.0/24}
	NS	`a.sec.dns.br` ⭐
	NS	`b.sec.dns.br`
	MX	`mail.tsrtech.com.br` ⭐
	TXT	`v=spf1 include:mailgun.org ~all`
	SOA	`a.sec.dns.br`hostmaster@registro.br serial=2026203000

MX for

tsrtech.com.br

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DNS History

1 record (1 active, 0 former)

●A45.239.137.692026-06-30 → 2026-07-25 · 2 obs

● 2026-06-30 22:58:06
● 2026-07-25 02:20:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
br	b.dns.br, e.dns.br, f.dns.br, a.dns.br...	-
tsrtech.com.br	a.sec.dns.br, b.sec.dns.br	-

✅ Authoritative Response

Server:200.160.0.11

NS records: a.sec.dns.br, b.sec.dns.br

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1089ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`45.239.137.69`

Analysis

Mail Server Role

Mail for tsrtech.com.br is routed through the mail server mail.tsrtech.com.br.

IP Addresses

mail.tsrtech.com.br has exactly one IP address — 45.239.137.69.

Host names like tsrtech.com.br are further examples that share IP numbers with mail.tsrtech.com.br.

mail.tsrtech.com.br - robtex.com