`mail.ctstelecom.com.br`

DNSSEC	⚠️ Not signed
A	166.0.186.20^{🇺🇸 FABWEB-BR166.0.186.0/24 Used by EndUser}
		PTR	`da5.srvhr.com.br`

`ctstelecom.com.br`

	DNSSEC	⚠️ Not signed
	A	166.0.186.20^{🇺🇸 FABWEB-BR166.0.186.0/24 Used by EndUser}
	NS	`bruce.ns.cloudflare.com` ⭐
	NS	`megan.ns.cloudflare.com`
	MX	`mail.ctstelecom.com.br` ⭐
	TXT	`v=spf1 a mx ip4:166.0.186.20 include:_spf.srvhr.com.br ~all`
	TXT	`v=spf1 include:spf.protection.outlook.com +all`
	SOA	`bruce.ns.cloudflare.com`dns@cloudflare.com serial=2403059391

MX for

ctstelecom.com.br

Same first word

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DNS History

1 record (1 active, 0 former)

●A166.0.186.202026-03-27 → 2026-05-11 · 2 obs

● 2026-03-27 09:52:24
● 2026-05-11 10:47:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
br	a.dns.br, b.dns.br, c.dns.br, d.dns.br...	-
ctstelecom.com.br	megan.ns.cloudflare.com, bruce.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.192.197

NS records: megan.ns.cloudflare.com, bruce.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 981ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`166.0.186.20`

Analysis

Mail Server Role

mail.ctstelecom.com.br serves as the mail server for ctstelecom.com.br.

IP Addresses

mail.ctstelecom.com.br resolves to a single IP: 166.0.186.20.

Other host names, for instance renovareconsultoria.com, server.powered.net.br, da5.srvhr.com.br, live7wp.hmpreview.com.br and babidoos.com.br share IP numbers with mail.ctstelecom.com.br.

mail.ctstelecom.com.br - robtex.com