`kyouju.com`

DNSSEC	⚠️ Not signed
A	202.235.128.53^{🇯🇵 SINET-AS202.235.128.0/19 SINET CIDR Block}
		PTR	`tomo.seijo.ac.jp`
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}
NS	`ns6.value-domain.com` ⚠️ Not in zone NS records
		A	203.189.105.251^{🇯🇵 GMO-INTERNET203.189.96.0/20 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
MX	`kyouju.com` ⭐
		A	202.235.128.53^{🇯🇵 SINET-AS202.235.128.0/19 SINET CIDR Block}
			PTR	`tomo.seijo.ac.jp`
TXT	`v=spf1 +ip4:202.235.128.52 +ip4:202.235.128.53 +ip4:202.172.26.16 include:_sp...`
TXT	`google-site-verification=JZgRNMhqrVdj2EffV2aBLUmHtK6qzFMJASWv8qjTX_A`
SOA	`ns1.value-domain.com`hostmaster@kyouju.com 2025-06-21 #19

`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=1776111922

MX for

kyouju.com

Same first word

kyouju.com

Similar names

koujyu.co.jp

koujyu.com

jyukou.com

jkouyu.com

youjuk.com

yujuko.sakura.ne.jp

DNS History

10 records (8 active, 2 former)

●NSns1.value-domain.com2015-08-04 → 2026-04-13 · 2 obs

● 2015-08-04 19:03:42
● 2026-04-13 20:37:18

●NSns2.value-domain.com2015-08-04 → 2026-04-13 · 2 obs

● 2015-08-04 19:03:42
● 2026-04-13 20:37:18

●NSns3.value-domain.com2026-03-25 → 2026-04-13 · 3 obs

○ 2015-08-04 19:03:42
● 2026-03-25 20:03:18
● 2026-04-13 20:37:18

●NSns4.value-domain.com2026-03-25 → 2026-04-13 · 3 obs

○ 2015-08-04 19:03:42
● 2026-03-25 20:03:18
● 2026-04-13 20:37:18

●NSns5.value-domain.com2026-03-25 → 2026-04-13 · 3 obs

○ 2015-08-04 19:03:42
● 2026-03-25 20:03:18
● 2026-04-13 20:37:18

●NSns6.value-domain.com2026-03-25 → 2026-04-13 · 3 obs

○ 2015-08-04 19:03:42
● 2026-03-25 20:03:18
● 2026-04-13 20:37:18

●MXkyouju.com2015-08-04 → 2026-04-13 · 2 obs

● 2015-08-04 19:03:42
● 2026-04-13 20:37:18

○A202.235.128.512015-08-04 → 2016-03-26 · 4 obs

● 2015-08-04 19:03:42
● 2016-03-26 07:11:10
○ 2018-08-20 21:21:22
○ 2026-04-13 20:37:18

○A202.235.128.522018-08-20 → 2018-10-05 · 5 obs

○ 2016-03-26 07:11:10
● 2018-08-20 21:21:22
● 2018-10-05 17:05:46
○ 2026-03-25 20:03:18
○ 2026-04-13 20:37:18

●A202.235.128.532026-03-25 → 2026-04-13 · 3 obs

○ 2018-10-05 17:05:46
● 2026-03-25 20:03:18
● 2026-04-13 20:37:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	b.gtld-servers.net, l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net...	-
kyouju.com	ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com, ns4.value-domain.com...	6 records

✅ Authoritative Response

Server:172.64.53.3

NS records: ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com, ns4.value-domain.com, ns5.value-domain.com, ns6.value-domain.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for kyouju.com (unsigned zone)

⏱️ Timing

Total: 3970ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`202.235.128.53`
NS	2	`ns1.value-domain.com, ns2.value-domain.com`
MX	1	`kyouju.com (pri: 10)`
TXT	2	`v=spf1 +ip4:202.235.128.52 +ip4:202.235., google-site-verification=JZgRNMhqrVdj2Ef`
SOA	1	`ns1.value-domain.com hostmaster.kyouju.c`

📌 Glue Records Collected

Total: 6

Out-of-bailiwick: 6 (ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com...)

Analysis

Mail Server Role

kyouju.com serves as the mail server for kyouju.com.

IP Addresses

kyouju.com resolves to one IP number: 202.235.128.53.

Name Servers

kyouju.com is delegated to six name servers: ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com, ns4.value-domain.com, ns5.value-domain.com and ns6.value-domain.com.

kyouju.com at least partially shares name servers with other domains, including gulliver-rentacar.com, arisunosato.jp, jbon.org, relax-life.net and buu.jp.