`jumbo-net.jp`

DNSSEC	⚠️ Not signed
A	18.176.183.140^{🇯🇵 Amazon18.176.0.0/15 EC2 NRT prefix}
A	57.181.55.11^{🇯🇵 Amazon57.180.0.0/14 EC2}
NS	`ns-1817.awsdns-35.co.uk` ⭐
		A	2600:9000:5307:1900::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1817.awsdns-35.co.uk`
		A	205.251.199.25^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1817.awsdns-35.co.uk`
NS	`ns-1110.awsdns-10.org`
		A	2600:9000:5304:5600::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1110.awsdns-10.org`
		A	205.251.196.86^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1110.awsdns-10.org`
NS	`ns-53.awsdns-06.com`
		A	2600:9000:5300:3500::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-53.awsdns-06.com`
		A	205.251.192.53^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-53.awsdns-06.com`
NS	`ns-699.awsdns-23.net`
		A	2600:9000:5302:bb00::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-699.awsdns-23.net`
		A	205.251.194.187^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-699.awsdns-23.net`
MX	`ist-mail2.i-studio.co.jp` ⭐
		A	1.33.190.179^{🇯🇵 InfoSphere1.33.0.0/16 INFOSPHERE}
SOA	`ns-1817.awsdns-35.co.uk`awsdns-hostmaster@amazon.com 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=1784003403

Same first word

jumbo-net.jp

DNS History

17 records (7 active, 10 former)

●NSns-1110.awsdns-10.org2026-04-29 → 2026-07-14 · 3 obs

○ 2017-06-06 21:45:10
● 2026-04-29 17:00:16
● 2026-07-14 05:07:46

●NSns-1817.awsdns-35.co.uk2026-04-29 → 2026-07-14 · 3 obs

○ 2017-06-06 21:45:10
● 2026-04-29 17:00:16
● 2026-07-14 05:07:46

●NSns-53.awsdns-06.com2026-04-29 → 2026-07-14 · 3 obs

○ 2017-06-06 21:45:10
● 2026-04-29 17:00:16
● 2026-07-14 05:07:46

●NSns-699.awsdns-23.net2026-04-29 → 2026-07-14 · 3 obs

○ 2017-06-06 21:45:10
● 2026-04-29 17:00:16
● 2026-07-14 05:07:46

○NSns1.nttbiz.com2015-07-19 → 2017-06-06 · 4 obs

● 2015-07-19 19:26:24
● 2017-06-06 21:45:10
○ 2026-04-29 17:00:16
○ 2026-07-14 05:07:46

○NSns2.nttbiz.com2015-07-19 → 2017-06-06 · 4 obs

● 2015-07-19 19:26:24
● 2017-06-06 21:45:10
○ 2026-04-29 17:00:16
○ 2026-07-14 05:07:46

●MXist-mail2.i-studio.co.jp2015-07-19 → 2026-07-14 · 2 obs

● 2015-07-19 19:26:24
● 2026-07-14 05:07:46

○A13.112.151.562026-04-29 → 2026-07-14 · 2 obs

○ 2026-04-29 17:00:16
○ 2026-07-14 05:07:46

○A13.193.84.2022026-05-04 → 2026-05-04 · 4 obs

○ 2026-04-29 17:00:16
● 2026-05-04 20:19:34
○ 2026-05-13 12:59:56
○ 2026-07-14 05:07:46

●A18.176.183.1402026-07-09 → 2026-07-14 · 3 obs

○ 2026-05-13 12:59:56
● 2026-07-09 06:37:16
● 2026-07-14 05:07:46

○A210.134.174.1502015-07-19 → 2017-06-06 · 4 obs

● 2015-07-19 19:26:24
● 2017-06-06 21:45:10
○ 2026-04-29 17:00:16
○ 2026-07-14 05:07:46

○A52.197.178.232026-04-29 → 2026-07-14 · 2 obs

○ 2026-04-29 17:00:16
○ 2026-07-14 05:07:46

○A52.69.9.2292026-05-13 → 2026-05-13 · 4 obs

○ 2026-05-04 20:19:34
● 2026-05-13 12:59:56
○ 2026-07-09 06:37:16
○ 2026-07-14 05:07:46

○A54.249.137.942026-04-29 → 2026-04-29 · 4 obs

○ 2017-06-06 21:45:10
● 2026-04-29 17:00:16
○ 2026-05-04 20:19:34
○ 2026-07-14 05:07:46

○A54.92.89.2032026-05-13 → 2026-05-13 · 4 obs

○ 2026-05-04 20:19:34
● 2026-05-13 12:59:56
○ 2026-07-09 06:37:16
○ 2026-07-14 05:07:46

○A57.180.237.722026-04-29 → 2026-05-04 · 5 obs

○ 2017-06-06 21:45:10
● 2026-04-29 17:00:16
● 2026-05-04 20:19:34
○ 2026-05-13 12:59:56
○ 2026-07-14 05:07:46

●A57.181.55.112026-07-09 → 2026-07-14 · 3 obs

○ 2026-05-13 12:59:56
● 2026-07-09 06:37:16
● 2026-07-14 05:07:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	h.dns.jp, b.dns.jp, f.dns.jp, e.dns.jp...	-
jumbo-net.jp	ns-1817.awsdns-35.co.uk, ns-699.awsdns-23.net, ns-53.awsdns-06.com, ns-1110.awsdns-10.org	-

✅ Authoritative Response

Server:205.251.199.25

NS records: ns-1817.awsdns-35.co.uk, ns-699.awsdns-23.net, ns-53.awsdns-06.com, ns-1110.awsdns-10.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for jumbo-net.jp (unsigned zone)

⏱️ Timing

Total: 584ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`57.181.55.11, 18.176.183.140`
NS	4	`ns-1110.awsdns-10.org, ns-1817.awsdns-35.co.uk...`
MX	1	`ist-mail2.i-studio.co.jp (pri: 10)`
SOA	1	`ns-1817.awsdns-35.co.uk awsdns-hostmaste`

Analysis

IP Addresses

jumbo-net.jp points to the IP addresses 18.176.183.140 and 57.181.55.11

Other host names, among them icebox.jp and ec2-57-181-55-11.ap-northeast-1.compute.amazonaws.com, have IP numbers in common with jumbo-net.jp.

Name Servers

The domain jumbo-net.jp is delegated to these four name servers: ns-53.awsdns-06.com, ns-699.awsdns-23.net, ns-1110.awsdns-10.org and ns-1817.awsdns-35.co.uk.

At least some of jumbo-net.jp's name servers are shared with other domains, for example d3m4ghe267dc67.cloudfront.net, cloud9.us-east-1.amazonaws.com, saddlebackdentalcenter.mobi and two more.

These name servers are routinely co-deployed with the name servers ns-460.awsdns-57.com, ns1.tukios.net, ns2.tukios.net and two others.

Four hostnames, each resolving to a pair of IP addresses: ns-53.awsdns-06.com directs to 205.251.192.53 and 2600:9000:5300:3500::1; ns-699.awsdns-23.net directs to 205.251.194.187 and 2600:9000:5302:bb00::1; ns-1110.awsdns-10.org directs to 205.251.196.86 and 2600:9000:5304:5600::1; ns-1817.awsdns-35.co.uk directs to 205.251.199.25 and 2600:9000:5307:1900::1.

Mail Servers

jumbo-net.jp routes its mail through a single mail server, ist-mail2.i-studio.co.jp.

jumbo-net.jp shares at least some of its mail servers with other domains — for example jp.warnerbros.com, rubina.jp, actage.jp and two more.

It is common to find these mail servers paired with the mail servers juno.i-studio.co.jp.

There is one IP number for ist-mail2.i-studio.co.jp: 1.33.190.179.

jumbo-net.jp - robtex.com

jumbo-net.jp

jp

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

Mail Servers

`jumbo-net.jp`

`jp`