`mx.opt-isikawa.com`

	DNSSEC	⚠️ Not signed
	A	153.122.206.94^{🇯🇵 AS131921153.122.192.0/20 GMO CLOUD K.K. GMO GlobalSign Holdings K.K.}

`opt-isikawa.com`

	DNSSEC	⚠️ Not signed
	A	153.122.205.45^{🇯🇵 AS131921153.122.192.0/20 GMO CLOUD K.K. GMO GlobalSign Holdings K.K.}
	NS	`ns1.shsvr.net` ⭐
	NS	`ns2.shsvr.net`
	MX	`mx.opt-isikawa.com` ⭐
	TXT	`v=spf1 include:_spf.shared-server.net ~all`
	SOA	`ns1.shsvr.net`root@shsvr.net serial=2698677959

MX for

opt-isikawa.com

Same first word

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DNS History

2 records (1 active, 1 former)

●A153.122.206.942026-03-02 → 2026-05-14 · 3 obs

○ 2017-04-02 22:40:28
● 2026-03-02 19:06:28
● 2026-05-14 23:56:18

○A211.13.204.142017-04-02 → 2017-04-02 · 3 obs

● 2017-04-02 22:40:28
○ 2026-03-02 19:06:28
○ 2026-05-14 23:56:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, a.gtld-servers.net, i.gtld-servers.net, d.gtld-servers.net...	-
opt-isikawa.com	ns1.shsvr.net, ns2.shsvr.net	-

✅ Authoritative Response

Server:157.120.113.232

NS records: ns1.shsvr.net, ns2.shsvr.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for opt-isikawa.com (unsigned zone)

⏱️ Timing

Total: 814ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`153.122.206.94`

Analysis

Mail Server Role

mx.opt-isikawa.com functions as a mail server for opt-isikawa.com.

IP Addresses

mx.opt-isikawa.com resolves to one IP number: 153.122.206.94.

other host names including mx.onchido.com, mx.bio-epi.co.jp, mx.mlifefurniture.jp, mx.im-jp.com and mx.maruibussan.com share IP numbers with mx.opt-isikawa.com.

mx.opt-isikawa.com - robtex.com