`mdx-edu.com`

DNSSEC	⚠️ Not signed
A	203.137.113.159^{🇯🇵 IDC203.137.112.0/21 Frontier Inc.}
NS	`01.dnsv.jp` ⭐
		A	2400:8500:3300::53^{🇯🇵 GMO-DNS2400:8500:3300::/48 GMO Internet,inc.}
			PTR	`01.dnsv.jp`
		A	157.7.32.53^{🇯🇵 GMO-DNS157.7.32.0/24 GMO Internet,inc. Network-Team.}
			PTR	`01.dnsv.jp`
NS	`02.dnsv.jp`
		A	157.7.33.53^{🇯🇵 GMO-DNS157.7.33.0/24 GMO Internet,inc. Network-Team.}
			PTR	`02.dnsv.jp`
NS	`03.dnsv.jp`
		A	2400:8500:3000::53^{🇯🇵 GMO-DNS2400:8500:3000::/48 GMO Internet,inc.}
			PTR	`03.dnsv.jp`
		A	157.7.34.53^{🇯🇵 GMO-DNS157.7.34.0/24 GMO Internet,inc. Network-Team.}
			PTR	`03.dnsv.jp`
NS	`04.dnsv.jp`
		A	2400:8500:3fff::53^{🇯🇵 GMO-DNS2400:8500:3fff::/48 GMO Internet,inc.}
			PTR	`04.dnsv.jp`
		A	157.7.35.53^{🇯🇵 GMO-DNS157.7.35.0/24 GMO Internet,inc. Network-Team.}
			PTR	`04.dnsv.jp`
MX	`dmail.kagoya.net` ⭐
		A	210.134.51.6^{🇯🇵 KAGOYAJAPAN210.134.48.0/20 KAGOYA Japan Inc.}
			PTR	`dmail01.kagoya.net`
		A	210.134.51.7^{🇯🇵 KAGOYAJAPAN210.134.48.0/20 KAGOYA Japan Inc.}
			PTR	`dmail02.kagoya.net`
		A	210.134.58.253^{🇯🇵 KAGOYAJAPAN210.134.48.0/20 KAGOYA Japan Inc.}
			PTR	`dmail03.kagoya.net`
		A	210.134.58.254^{🇯🇵 KAGOYAJAPAN210.134.48.0/20 KAGOYA Japan Inc.}
			PTR	`dmail04.kagoya.net`
TXT	`v=spf1 ip4:203.137.113.159 include:kagoya.net ~all`
SOA	`01.dnsv.jp`hostmaster@dnsv.jp serial=1685075912

`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=1785732602

Same first word

mdx-edu.com

DNS History

10 records (6 active, 4 former)

●NS01.dnsv.jp2018-11-30 → 2026-08-03 · 3 obs

○ 2017-02-02 21:45:36
● 2018-11-30 18:52:36
● 2026-08-03 05:09:32

●NS02.dnsv.jp2018-11-30 → 2026-08-03 · 3 obs

○ 2017-02-02 21:45:36
● 2018-11-30 18:52:36
● 2026-08-03 05:09:32

●NS03.dnsv.jp2018-11-30 → 2026-08-03 · 3 obs

○ 2017-02-02 21:45:36
● 2018-11-30 18:52:36
● 2026-08-03 05:09:32

●NS04.dnsv.jp2018-11-30 → 2026-08-03 · 3 obs

○ 2017-02-02 21:45:36
● 2018-11-30 18:52:36
● 2026-08-03 05:09:32

○NSdns2.ixent.ne.jp2015-07-22 → 2017-02-02 · 4 obs

● 2015-07-22 14:53:50
● 2017-02-02 21:45:36
○ 2018-11-30 18:52:36
○ 2026-08-03 05:09:32

○NSns.mdx-grp.co.jp2015-07-22 → 2017-02-02 · 4 obs

● 2015-07-22 14:53:50
● 2017-02-02 21:45:36
○ 2018-11-30 18:52:36
○ 2026-08-03 05:09:32

●MXdmail.kagoya.net2018-11-30 → 2026-08-03 · 3 obs

○ 2017-02-02 21:45:36
● 2018-11-30 18:52:36
● 2026-08-03 05:09:32

○MXmail.mdx-edu.com2015-07-22 → 2017-02-02 · 4 obs

● 2015-07-22 14:53:50
● 2017-02-02 21:45:36
○ 2018-11-30 18:52:36
○ 2026-08-03 05:09:32

●A203.137.113.1592018-11-30 → 2026-08-03 · 3 obs

○ 2017-02-02 21:45:36
● 2018-11-30 18:52:36
● 2026-08-03 05:09:32

○A210.166.215.482015-07-22 → 2017-02-02 · 4 obs

● 2015-07-22 14:53:50
● 2017-02-02 21:45:36
○ 2018-11-30 18:52:36
○ 2026-08-03 05:09:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
mdx-edu.com	01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp, 04.dnsv.jp	-

✅ Authoritative Response

Server:157.7.32.53

NS records: 01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp, 04.dnsv.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mdx-edu.com (unsigned zone)

⏱️ Timing

Total: 1048ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`203.137.113.159`
NS	4	`01.dnsv.jp, 02.dnsv.jp...`
MX	1	`dmail.kagoya.net (pri: 10)`
TXT	1	`v=spf1 ip4:203.137.113.159 include:kagoy`
SOA	1	`01.dnsv.jp hostmaster.dnsv.jp`

Analysis

IP Addresses

mdx-edu.com resolves to one IP address: 203.137.113.159.

up-sys.co.jp, upsystem.jp, healingm.com and two other host names share IP numbers with mdx-edu.com.

Name Servers

The authoritative name servers for mdx-edu.com are 01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp and 04.dnsv.jp.

mdx-edu.com has at least partial name server overlap with other domains, such as capitalinvate.jp, daido-house-tech.jp, vam.jp and two others.

Hostnames that resolve to two IP addresses:

01.dnsv.jp has two IP addresses: 157.7.32.53 and 2400:8500:3300::53.

03.dnsv.jp has two IP addresses: 157.7.34.53 and 2400:8500:3000::53.

04.dnsv.jp has two IP addresses: 157.7.35.53 and 2400:8500:3fff::53.

Hosts with just one IP address:

02.dnsv.jp directs to 157.7.33.53.