`hostmaster.office-ku-server.com`

DNSSEC	⚠️ Not signed
A	157.7.189.191^{🇯🇵 GMO-INTERNET157.7.128.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
		PTR	`users219.vip.heteml.jp`

`office-ku-server.com`

	DNSSEC	⚠️ Not signed
	A	157.7.189.191^{🇯🇵 GMO-INTERNET157.7.128.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
	NS	`dns0.heteml.jp` ⭐
	NS	`dns1.heteml.jp`
	MX	`mx-proxy501.heteml.jp` ⭐
	MX	`mx-proxy502.heteml.jp`⁽²⁰⁾
	TXT	`v=spf1 include:_spf.heteml.jp ~all`
	SOA	`dns0.heteml.jp`hostmaster@office-ku-server.com serial=1778555297

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DNS History

3 records (1 active, 2 former)

○A157.7.188.1832015-10-24 → 2017-01-08 · 5 obs

○ 2015-08-17 23:38:22
● 2015-10-24 02:20:10
● 2017-01-08 19:46:32
○ 2026-02-26 08:28:48
○ 2026-05-12 03:32:28

●A157.7.189.1912026-02-26 → 2026-05-12 · 3 obs

○ 2017-01-08 19:46:32
● 2026-02-26 08:28:48
● 2026-05-12 03:32:28

○A182.48.26.432015-08-17 → 2015-08-17 · 3 obs

● 2015-08-17 23:38:22
○ 2015-10-24 02:20:10
○ 2026-05-12 03:32:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
office-ku-server.com	dns0.heteml.jp, dns1.heteml.jp	-

✅ Authoritative Response

Server:157.7.44.53

NS records: dns0.heteml.jp, dns1.heteml.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for office-ku-server.com (unsigned zone)

⏱️ Timing

Total: 994ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`157.7.189.191`

Analysis

IP Addresses

hostmaster.office-ku-server.com resolves to one IP number: 157.7.189.191.

other host names including shirakobato.com, davincimode.jp, mail.win8.info, hostmaster.number44.org and m-lc.net share IP numbers with hostmaster.office-ku-server.com.

hostmaster.office-ku-server.com - robtex.com