`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`
NS	`dns0.heteml.jp` ⭐
		A	157.7.44.53^{🇯🇵 GMO-INTERNET157.7.40.0/21 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
			PTR	`dns510.heteml.jp`
NS	`dns1.heteml.jp`
		A	157.7.188.149^{🇯🇵 GMO-INTERNET157.7.128.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
			PTR	`dns711.phy.heteml.jp`
MX	`mx-proxy501.heteml.jp` ⭐
		A	157.7.189.17^{🇯🇵 GMO-INTERNET157.7.128.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
MX	`mx-proxy502.heteml.jp`⁽²⁰⁾
		A	157.7.189.18^{🇯🇵 GMO-INTERNET157.7.128.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
TXT	`v=spf1 include:_spf.heteml.jp ~all`
SOA	`dns0.heteml.jp`hostmaster@office-ku-server.com serial=1778397378

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1778397246

Subdomains

hostmaster.office-ku-server.com

Same first word

office-ku-server.com

DNS History

8 records (5 active, 3 former)

●NSdns0.heteml.jp2015-07-21 → 2026-05-10 · 2 obs

● 2015-07-21 11:34:16
● 2026-05-10 07:41:34

●NSdns1.heteml.jp2015-07-21 → 2026-05-10 · 2 obs

● 2015-07-21 11:34:16
● 2026-05-10 07:41:34

○MXmail33.heteml.jp2015-07-21 → 2020-01-15 · 4 obs

● 2015-07-21 11:34:16
● 2020-01-15 22:30:46
○ 2026-02-15 19:58:36
○ 2026-05-10 07:41:34

●MXmx-proxy501.heteml.jp2026-02-15 → 2026-05-10 · 3 obs

○ 2020-01-15 22:30:46
● 2026-02-15 19:58:36
● 2026-05-10 07:41:34

●MXmx-proxy502.heteml.jp2026-02-15 → 2026-05-10 · 3 obs

○ 2020-01-15 22:30:46
● 2026-02-15 19:58:36
● 2026-05-10 07:41:34

○A157.7.188.1832015-11-23 → 2020-01-15 · 5 obs

○ 2015-07-21 11:34:16
● 2015-11-23 02:49:06
● 2020-01-15 22:30:46
○ 2026-02-15 19:58:36
○ 2026-05-10 07:41:34

●A157.7.189.1912026-02-15 → 2026-05-10 · 3 obs

○ 2020-01-15 22:30:46
● 2026-02-15 19:58:36
● 2026-05-10 07:41:34

○A182.48.26.432015-07-21 → 2015-07-21 · 3 obs

● 2015-07-21 11:34:16
○ 2015-11-23 02:49:06
○ 2026-05-10 07:41:34

🔍 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: 1222ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`157.7.189.191`
NS	2	`dns0.heteml.jp, dns1.heteml.jp`
MX	2	`mx-proxy502.heteml.jp (pri: 20), mx-proxy501.heteml.jp (pri: 10)`
TXT	1	`v=spf1 include:_spf.heteml.jp ~all`
SOA	1	`dns0.heteml.jp hostmaster.office-ku-serv`

Analysis

Hierarchy

office-ku-server.com is the parent of hostmaster.office-ku-server.com.

IP Addresses

office-ku-server.com resolves to a single IP address: 157.7.189.191.

Other host names including key-rescue.net, www.lock-rescue24.com, plusui.jp, linkpad.jp and area66.jp share IP numbers with office-ku-server.com.

Name Servers

office-ku-server.com's delegation uses two name servers, dns0.heteml.jp and dns1.heteml.jp.

office-ku-server.com shares the same name server setup as other domains, for example parking-rentacar.com, implant-soudan.net, akizuki-clinic.jp, brosupply.com and hc-sensyu.com.

office-ku-server.com at least partially shares name servers with other domains; for instance aiki-tcs.jp.

Host names with a single IP:

dns0.heteml.jp points to 157.7.44.53.

dns1.heteml.jp points to 157.7.188.149.

Mail Servers

office-ku-server.com is handled by two mail servers: mx-proxy501.heteml.jp and mx-proxy502.heteml.jp.

office-ku-server.com shares its mail server setup with other domains, including reo89.jp, seishin-m.ed.jp, envy.jp, owlm.co.jp and ecoproject.co.jp.

office-ku-server.com shares at least partially some mail servers with other domains, for instance g-fj.com, jcwp.net and min-paku.biz.

Host names with a single IP:

mx-proxy501.heteml.jp points to 157.7.189.17.

mx-proxy502.heteml.jp points to 157.7.189.18.

office-ku-server.com - robtex.com