`modelica-usersgroup.jp`

DNSSEC	⚠️ Not signed
A	153.122.50.114^{🇯🇵 AS131921153.122.48.0/20 GMO CLOUD K.K. GMO GlobalSign Holdings K.K.}
		PTR	`newtonworks.co.jp`
NS	`ns2.namedserver.net` ⭐
		A	157.120.112.212^{🇯🇵 GMOHS-CL157.120.112.0/24 GMO GlobalSign Holdings K.K.}
		A	157.120.113.212^{🇯🇵 GMOHS-CL157.120.113.0/24 GMO GlobalSign Holdings K.K.}
		A	157.120.114.212^{🇯🇵 GMOHS-CL157.120.114.0/24 GMO GlobalSign Holdings K.K.}
NS	`ns.namedserver.net`
		A	157.120.112.212^{🇯🇵 GMOHS-CL157.120.112.0/24 GMO GlobalSign Holdings K.K.}
		A	157.120.113.212^{🇯🇵 GMOHS-CL157.120.113.0/24 GMO GlobalSign Holdings K.K.}
		A	157.120.114.212^{🇯🇵 GMOHS-CL157.120.114.0/24 GMO GlobalSign Holdings K.K.}
MX	`mail.modelica-usersgroup.jp` ⭐
		A	153.122.50.114^{🇯🇵 AS131921153.122.48.0/20 GMO CLOUD K.K. GMO GlobalSign Holdings K.K.}
			PTR	`newtonworks.co.jp`
MX	`modelica-usersgroup.jp` ⭐
		A	153.122.50.114^{🇯🇵 AS131921153.122.48.0/20 GMO CLOUD K.K. GMO GlobalSign Holdings K.K.}
			PTR	`newtonworks.co.jp`
SOA	`ns.namedserver.net`root@namedserver.net serial=1

`jp`

	DNSSEC	🔒 Signed (DS record present)
	NS	`z.dns.jp` ⭐
	NS	`a.dns.jp`
	NS	`b.dns.jp`
	NS	`c.dns.jp`
	NS	`d.dns.jp`
	NS	`e.dns.jp`
	NS	`f.dns.jp`
	NS	`g.dns.jp`
	NS	`h.dns.jp`
	SOA	`z.dns.jp`root@dns.jp serial=1778856302

WOT: UNKNOWN (61/100)

MX for

modelica-usersgroup.jp

Subdomains

mail.modelica-usersgroup.jp

www.modelica-usersgroup.jp

Same first word

modelica-usersgroup.jp

DNS History

6 records (5 active, 1 former)

●NSns.namedserver.net2015-08-21 → 2026-05-15 · 2 obs

● 2015-08-21 02:12:22
● 2026-05-15 14:52:50

●NSns2.namedserver.net2015-08-21 → 2026-05-15 · 2 obs

● 2015-08-21 02:12:22
● 2026-05-15 14:52:50

●MXmail.modelica-usersgroup.jp2015-08-21 → 2026-05-15 · 2 obs

● 2015-08-21 02:12:22
● 2026-05-15 14:52:50

●MXmodelica-usersgroup.jp2015-08-21 → 2026-05-15 · 2 obs

● 2015-08-21 02:12:22
● 2026-05-15 14:52:50

○A121.119.175.1292015-08-21 → 2017-03-30 · 4 obs

● 2015-08-21 02:12:22
● 2017-03-30 06:21:24
○ 2026-05-09 17:33:06
○ 2026-05-15 14:52:50

●A153.122.50.1142026-05-09 → 2026-05-15 · 3 obs

○ 2017-03-30 06:21:24
● 2026-05-09 17:33:06
● 2026-05-15 14:52:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...	-
modelica-usersgroup.jp	ns.namedserver.net, ns2.namedserver.net	-

✅ Authoritative Response

Server:157.120.114.212

NS records: ns.namedserver.net, ns2.namedserver.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for modelica-usersgroup.jp (unsigned zone)

⏱️ Timing

Total: 1938ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`153.122.50.114`
NS	2	`ns2.namedserver.net, ns.namedserver.net`
MX	2	`modelica-usersgroup.jp (pri: 100), mail.modelica-usersgroup.jp (pri: 100)`
SOA	1	`ns.namedserver.net root.namedserver.net`

Analysis

Hierarchy

modelica-usersgroup.jp is parent of mail.modelica-usersgroup.jp and www.modelica-usersgroup.jp.

Mail Server Role

modelica-usersgroup.jp serves as a mail server for modelica-usersgroup.jp.

mail.modelica-usersgroup.jp commonly serves as a mail server together with modelica-usersgroup.jp.

IP Addresses

modelica-usersgroup.jp points to a single IP: 153.122.50.114.

Other host names, for instance ns1.newtonworks.com, newtonworks.co.jp, mail.modelica-usersgroup.jp, www.modelica-usersgroup.jp and ns2.newtonworks.co.jp share IP numbers with modelica-usersgroup.jp.

Name Servers

modelica-usersgroup.jp's delegation is to two name servers ns2.namedserver.net and ns.namedserver.net.

modelica-usersgroup.jp shares the same name server configuration as other domains, such as yamajim.com, 241.0.122.153.in-addr.arpa, gc-corp.com, ryukyu-tech-bridge.com and minyo-shakuhachi.com.

modelica-usersgroup.jp shares name servers with other domains at least partially, for instance 139.152.172.210.in-addr.arpa, ainan-spc.co.jp and reple.com.

These name servers are commonly used alongside ns2.isle-jp.net and ns.isle-jp.net.

Host names with three IP numbers

Host ns2.namedserver.net points to 157.120.112.212, 157.120.113.212 and 157.120.114.212

Host ns.namedserver.net points to 157.120.112.212, 157.120.113.212 and 157.120.114.212

Host names that point to 157.120.112.212: ns2.namedserver.net and ns.namedserver.net

Host names that point to 157.120.113.212: ns2.namedserver.net and ns.namedserver.net

Host names that point to 157.120.114.212: ns2.namedserver.net and ns.namedserver.net

Mail Servers

modelica-usersgroup.jp is handled by two mail servers: modelica-usersgroup.jp and mail.modelica-usersgroup.jp.

Host names with one IP number: modelica-usersgroup.jp and mail.modelica-usersgroup.jp point to 153.122.50.114.

modelica-usersgroup.jp - robtex.com