`kohsei-works.com`

DNSSEC	⚠️ Not signed
A	157.7.184.22^{🇯🇵 GMO-INTERNET157.7.128.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
NS	`ns1.value-domain.com` ⭐
		A	172.64.52.38^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.64.52.161^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns2.value-domain.com`
		A	172.64.53.3^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.64.53.115^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns3.value-domain.com` ⚠️ Not in zone NS records
		A	172.64.52.38^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.64.52.161^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns4.value-domain.com` ⚠️ Not in zone NS records
		A	172.64.53.3^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.64.53.115^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns5.value-domain.com` ⚠️ Not in zone NS records
		A	172.64.52.38^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.64.52.161^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
MX	`kohsei-works.com` ⭐
		A	157.7.184.22^{🇯🇵 GMO-INTERNET157.7.128.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
TXT	`v=spf1 ip4:157.7.184.22 include:_spf.ktk-sol.co.jp include:spf.vdone.jp +ip4:...`
SOA	`ns1.value-domain.com`hostmaster@kohsei-works.com 2026-02-24 #11

`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=1777082726

MX for

kohsei-works.com

Same first word

kohsei-works.com

DNS History

11 records (7 active, 4 former)

○NSdns01.gmoserver.jp2017-08-10 → 2017-12-10 · 4 obs

● 2017-08-10 11:42:40
● 2017-12-10 09:17:32
○ 2026-03-23 12:34:26
○ 2026-04-25 02:23:16

○NSdns02.gmoserver.jp2017-08-10 → 2017-12-10 · 4 obs

● 2017-08-10 11:42:40
● 2017-12-10 09:17:32
○ 2026-03-23 12:34:26
○ 2026-04-25 02:23:16

●NSns1.value-domain.com2026-03-23 → 2026-04-25 · 3 obs

○ 2017-12-10 09:17:32
● 2026-03-23 12:34:26
● 2026-04-25 02:23:16

●NSns2.value-domain.com2026-03-23 → 2026-04-25 · 3 obs

○ 2017-12-10 09:17:32
● 2026-03-23 12:34:26
● 2026-04-25 02:23:16

●NSns3.value-domain.com2026-03-23 → 2026-04-25 · 3 obs

○ 2017-12-10 09:17:32
● 2026-03-23 12:34:26
● 2026-04-25 02:23:16

●NSns4.value-domain.com2026-03-23 → 2026-04-25 · 3 obs

○ 2017-12-10 09:17:32
● 2026-03-23 12:34:26
● 2026-04-25 02:23:16

●NSns5.value-domain.com2026-03-23 → 2026-04-25 · 3 obs

○ 2017-12-10 09:17:32
● 2026-03-23 12:34:26
● 2026-04-25 02:23:16

●MXkohsei-works.com2026-03-23 → 2026-04-25 · 3 obs

○ 2017-12-10 09:17:32
● 2026-03-23 12:34:26
● 2026-04-25 02:23:16

○MXmx8.gmoserver.jp2017-08-10 → 2017-12-10 · 4 obs

● 2017-08-10 11:42:40
● 2017-12-10 09:17:32
○ 2026-03-23 12:34:26
○ 2026-04-25 02:23:16

○A157.7.144.1242017-08-10 → 2017-12-10 · 4 obs

● 2017-08-10 11:42:40
● 2017-12-10 09:17:32
○ 2026-03-23 12:34:26
○ 2026-04-25 02:23:16

●A157.7.184.222026-03-23 → 2026-04-25 · 3 obs

○ 2017-12-10 09:17:32
● 2026-03-23 12:34:26
● 2026-04-25 02:23:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, f.gtld-servers.net, d.gtld-servers.net, m.gtld-servers.net...	-
kohsei-works.com	ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com, ns4.value-domain.com...	5 records

✅ Authoritative Response

Server:172.64.52.161

NS records: ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com, ns4.value-domain.com, ns5.value-domain.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for kohsei-works.com (unsigned zone)

⏱️ Timing

Total: 510ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`157.7.184.22`
NS	2	`ns2.value-domain.com, ns1.value-domain.com`
MX	1	`kohsei-works.com (pri: 10)`
TXT	1	`v=spf1 ip4:157.7.184.22 include:_spf.ktk`
SOA	1	`ns1.value-domain.com hostmaster.kohsei-w`

📌 Glue Records Collected

Total: 5

Out-of-bailiwick: 5 (ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com...)

Analysis

Mail Server Role

kohsei-works.com serves as the mail server for kohsei-works.com.

IP Addresses

kohsei-works.com points to a single IP number: 157.7.184.22.

Other host names, for instance hiiragi.net, mail.nespape.com, tr1093.com, b2.valueserver.jp and takinone.jp share IP numbers with kohsei-works.com.

Name Servers

kohsei-works.com is delegated to five name servers: ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com, ns4.value-domain.com and ns5.value-domain.com.

kohsei-works.com at least partially shares name servers with other domains, for instance taneko.co.jp, inoxia-rec.com, fdrank.com, 21web-study.com and odaiba.info.