`mail.katugaku.com`

DNSSEC	⚠️ Not signed
A	183.181.97.27^{🇯🇵 XSERVER-AS183.181.96.0/23 XSERVER Inc.}
		PTR	`sv7026.xserver.jp`

`katugaku.com`

	DNSSEC	⚠️ Not signed
	A	183.181.97.27^{🇯🇵 XSERVER-AS183.181.96.0/23 XSERVER Inc.}
	NS	`ns1.xserver.jp` ⭐
	NS	`ns2.xserver.jp`
	NS	`ns3.xserver.jp`
	NS	`ns4.xserver.jp`
	NS	`ns5.xserver.jp`
	MX	`katugaku.com` ⭐
	TXT	`v=spf1 +a:sv7026.xserver.jp +a:katugaku.com +mx include:spf.sender.xserver.jp...`
	SOA	`ns1.xserver.jp`root@xserver.jp serial=0

Previously MX for

katugaku.com

Same first word

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DNS History

2 records (1 active, 1 former)

●A183.181.97.272026-05-12 → 2026-05-12 · 2 obs

○ 2016-06-28 09:07:58
● 2026-05-12 11:32:50

○A211.133.240.1462015-07-11 → 2016-06-28 · 3 obs

● 2015-07-11 19:49:48
● 2016-06-28 09:07:58
○ 2026-05-12 11:32:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
katugaku.com	ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp...	-

✅ Authoritative Response

Server:35.72.43.26

NS records: ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp, ns5.xserver.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for katugaku.com (unsigned zone)

⏱️ Timing

Total: 983ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`183.181.97.27`

Analysis

IP Addresses

mail.katugaku.com points to a single IP: 183.181.97.27.

Other host names, for instance hirosifarm.com, marumitu.com, ryohirano.com, www.hahatokotime.com and www.katugaku.com share IP numbers with mail.katugaku.com.

mail.katugaku.com - robtex.com