`mail.cuartohair.com`

DNSSEC	⚠️ Not signed
A	203.137.75.20^{🇯🇵 IDC203.137.64.0/20 Frontier Inc.}
		PTR	`sv203137075020.extlink.co.jp`

`cuartohair.com`

	DNSSEC	⚠️ Not signed
	A	202.234.142.37^{🇯🇵 IDC202.234.140.0/22 Frontier Inc.}
	NS	`ns.cuartohair.com` ⭐
	NS	`ns1.dns-domain.jp`
	NS	`ns2.dns-domain.jp`
	NS	`ns3.dns-domain.jp`
	NS	`ns4.dns-domain.jp`
	NS	`ns5.dns-domain.jp`
	MX	`mail.cuartohair.com` ⭐
	TXT	`v=spf1 a mx ~all`
	SOA	`ns.cuartohair.com`postmaster@cuartohair.com 2010-01-28 #15

MX for

cuartohair.com

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DNS History

1 record (1 active, 0 former)

●A203.137.75.202026-02-26 → 2026-03-27 · 2 obs

● 2026-02-26 10:38:32
● 2026-03-27 22:50:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
cuartohair.com	ns1.dns-domain.jp, ns2.dns-domain.jp, ns3.dns-domain.jp, ns4.dns-domain.jp...	-

✅ Authoritative Response

Server:202.218.231.250

NS records: ns1.dns-domain.jp, ns2.dns-domain.jp, ns3.dns-domain.jp, ns4.dns-domain.jp, ns5.dns-domain.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cuartohair.com (unsigned zone)

⏱️ Timing

Total: 1034ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`203.137.75.20`

Analysis

Mail Server Role

mail.cuartohair.com serves as a mail server for cuartohair.com.

IP Addresses

mail.cuartohair.com resolves to one IP number: 203.137.75.20.

Other host names, for instance mail.aroravi.com, mail.tsujimoto-2007.com, mail.ricca-shirogane.jp, mail.syochan.com and mail.beapur.net share IP numbers with mail.cuartohair.com.

mail.cuartohair.com - robtex.com