system-cobo.jp - robtex.com

`system-cobo.jp`

	DNSSEC	⚠️ Not signed
	NS	`ns1.kumiai.or.jp` ⭐ ⚠️ Not in parent delegation
			A	210.227.91.133^{🇯🇵 OCN210.226.0.0/15 (AS4713) CIDR BLOCK 14 NTT Communications Corporation 1-1-6 Uchisaiwai-cho, Chiyoda-ku Tokyo 100-8019 JAPAN}
				PTR	`tessie.kumiai.or.jp`
	NS	`cassis.kumiai.or.jp` ⚠️ Not in zone NS records
	NS	`ns-kg021.ocn.ad.jp` ⚠️ Not in parent delegation
			A	2001:380:0:10::101^{🇯🇵 OCN2001:380::/32 IPv6 Network, Japan}
				PTR	`ns-kg021.ocn.ad.jp`
			A	211.129.14.166^{🇯🇵 OCN211.129.0.0/16 (AS4713) CIDR BLOCK 26 NTT Communications Corporation 1-1-6 Uchisaiwai-cho, Chiyoda-ku Tokyo 100-8019 JAPAN}
				PTR	`ns-kg021.ocn.ad.jp`
	NS	`ns.system-cobo.co.jp` ⚠️ Not in parent delegation
			A	210.227.91.129^{🇯🇵 OCN210.226.0.0/15 (AS4713) CIDR BLOCK 14 NTT Communications Corporation 1-1-6 Uchisaiwai-cho, Chiyoda-ku Tokyo 100-8019 JAPAN}
				PTR	`cynthia.system-cobo.co.jp`
	NS	`ns2.kumiai.or.jp` ⚠️ Not in parent delegation
			A	210.227.91.132^{🇯🇵 OCN210.226.0.0/15 (AS4713) CIDR BLOCK 14 NTT Communications Corporation 1-1-6 Uchisaiwai-cho, Chiyoda-ku Tokyo 100-8019 JAPAN}
				PTR	`pepper.kumiai.or.jp`
	NS	`ns3.kumiai.or.jp` ⚠️ Not in parent delegation
			A	54.95.57.41^{🇯🇵 Amazon54.95.0.0/17 EC2 NRT prefix}
				PTR	`ns3.kumiai.or.jp`
	NS	`pepper.kumiai.or.jp` ⚠️ Not in zone NS records
			A	210.227.91.132^{🇯🇵 OCN210.226.0.0/15 (AS4713) CIDR BLOCK 14 NTT Communications Corporation 1-1-6 Uchisaiwai-cho, Chiyoda-ku Tokyo 100-8019 JAPAN}
				PTR	`pepper.kumiai.or.jp`
	NS	`tessie.kumiai.or.jp` ⚠️ Not in zone NS records
			A	210.227.91.133^{🇯🇵 OCN210.226.0.0/15 (AS4713) CIDR BLOCK 14 NTT Communications Corporation 1-1-6 Uchisaiwai-cho, Chiyoda-ku Tokyo 100-8019 JAPAN}
				PTR	`tessie.kumiai.or.jp`
	SOA	`ns1.kumiai.or.jp`root@kumiai.or.jp 2012-12-15 #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=1778409003

Same first word

system-cobo.jp

system-cobo.co.jp

system-cobo.net

DNS History

8 records (8 active, 0 former)

●NScassis.kumiai.or.jp2026-05-09 → 2026-05-10 · 3 obs

○ 2015-08-06 11:13:50
● 2026-05-09 05:39:16
● 2026-05-10 11:05:26

●NSns-kg021.ocn.ad.jp2015-08-06 → 2026-05-10 · 2 obs

● 2015-08-06 11:13:50
● 2026-05-10 11:05:26

●NSns.system-cobo.co.jp2015-08-06 → 2026-05-10 · 2 obs

● 2015-08-06 11:13:50
● 2026-05-10 11:05:26

●NSns1.kumiai.or.jp2015-08-06 → 2026-05-10 · 2 obs

● 2015-08-06 11:13:50
● 2026-05-10 11:05:26

●NSns2.kumiai.or.jp2015-08-06 → 2026-05-10 · 2 obs

● 2015-08-06 11:13:50
● 2026-05-10 11:05:26

●NSns3.kumiai.or.jp2015-08-06 → 2026-05-10 · 2 obs

● 2015-08-06 11:13:50
● 2026-05-10 11:05:26

●NSpepper.kumiai.or.jp2026-05-09 → 2026-05-10 · 3 obs

○ 2015-08-06 11:13:50
● 2026-05-09 05:39:16
● 2026-05-10 11:05:26

●NStessie.kumiai.or.jp2026-05-09 → 2026-05-10 · 3 obs

○ 2015-08-06 11:13:50
● 2026-05-09 05:39:16
● 2026-05-10 11:05:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...	-
system-cobo.jp	pepper.kumiai.or.jp, tessie.kumiai.or.jp, cassis.kumiai.or.jp	-

✅ Authoritative Response

Server:210.227.91.133

NS records: pepper.kumiai.or.jp, tessie.kumiai.or.jp, cassis.kumiai.or.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for system-cobo.jp (unsigned zone)

⏱️ Timing

Total: 3195ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	5	`ns-kg021.ocn.ad.jp, ns3.kumiai.or.jp...`
SOA	1	`ns1.kumiai.or.jp root.kumiai.or.jp`

Analysis

Name Servers

system-cobo.jp is delegated to eight name servers: ns-kg021.ocn.ad.jp, ns.system-cobo.co.jp, cassis.kumiai.or.jp, ns1.kumiai.or.jp, ns2.kumiai.or.jp, ns3.kumiai.or.jp, pepper.kumiai.or.jp and tessie.kumiai.or.jp.

system-cobo.jp at least partially shares name servers with other domains, for instance kumulipo.jp, tmch.or.jp, 224.63.160.114.in-addr.arpa, city.akishima.tokyo.jp and grand-inc.co.jp.

these name servers are commonly used with the name servers ns4.kumiai.or.jp, ns-tk022.ocn.ad.jp, ns2.system-cobo.net, ns3.system-cobo.net, ns1.system-cobo.net, ns4.system-cobo.net, ymmt.f-take.com and tonio.or.jp.

Two-IP host: ns-kg021.ocn.ad.jp points to: 2001:380:0:10::101 and 211.129.14.166.

One-IP hosts:

ns.system-cobo.co.jp points to: 210.227.91.129

ns1.kumiai.or.jp points to: 210.227.91.133

ns2.kumiai.or.jp points to: 210.227.91.132

ns3.kumiai.or.jp points to: 54.95.57.41

pepper.kumiai.or.jp points to: 210.227.91.132

tessie.kumiai.or.jp points to: 210.227.91.133

Hosts pointing to 210.227.91.133: ns1.kumiai.or.jp and tessie.kumiai.or.jp

Hosts pointing to 210.227.91.132: ns2.kumiai.or.jp and pepper.kumiai.or.jp