superusers.jp - dns.ninja

`superusers.jp`

DNSSEC	⚠️ Not signed
A	2406:8c00:0:3428:133:18:241:181^{🇯🇵 KAGOYAJAPAN2406:8c00::/32 KAGOYA Japan Inc.}
		PTR	`su001.superusers.jp`
A	133.18.241.181^{🇯🇵 KAGOYAJAPAN133.18.0.0/16 KAGOYA Japan 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	`mail.superusers.jp` ⭐
		A	2406:8c00:0:3428:133:18:241:181^{🇯🇵 KAGOYAJAPAN2406:8c00::/32 KAGOYA Japan Inc.}
			PTR	`su001.superusers.jp`
		A	133.18.241.181^{🇯🇵 KAGOYAJAPAN133.18.0.0/16 KAGOYA Japan Inc.}
TXT	`google-site-verification=ozytZNXhenEpdVF6YGGtDJCNvAjV8F4WbQR9MiHMYFk`
TXT	`v=spf1 ip4:133.18.241.181 ip6:2406:8c00:0:3428:133:18:241:181 ip4:160.16.74.1...`
SOA	`01.dnsv.jp`hostmaster@dnsv.jp serial=1781660746

`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=1782841502

Subdomains

mail.superusers.jp

su001.superusers.jp

Same first word

superusers.dk

superusers.net

superusers.in

superusers.netlify.app

superusers.com

superusers.de

superusers.jp

DNS History

11 records (7 active, 4 former)

●NS01.dnsv.jp2026-06-30 → 2026-06-30 · 3 obs

○ 2017-03-22 00:08:42
● 2026-06-30 17:55:06
● 2026-06-30 17:55:10

●NS02.dnsv.jp2026-06-30 → 2026-06-30 · 3 obs

○ 2017-03-22 00:08:42
● 2026-06-30 17:55:06
● 2026-06-30 17:55:10

●NS03.dnsv.jp2026-06-30 → 2026-06-30 · 3 obs

○ 2017-03-22 00:08:42
● 2026-06-30 17:55:06
● 2026-06-30 17:55:10

●NS04.dnsv.jp2026-06-30 → 2026-06-30 · 3 obs

○ 2017-03-22 00:08:42
● 2026-06-30 17:55:06
● 2026-06-30 17:55:10

○NSdns01.muumuu-domain.com2017-03-22 → 2017-03-22 · 3 obs

● 2017-03-22 00:08:42
○ 2026-06-30 17:55:06
○ 2026-06-30 17:55:10

○NSdns02.muumuu-domain.com2017-03-22 → 2017-03-22 · 3 obs

● 2017-03-22 00:08:42
○ 2026-06-30 17:55:06
○ 2026-06-30 17:55:10

○NSsuperusers.jp2017-03-22 → 2017-03-22 · 3 obs

● 2017-03-22 00:08:42
○ 2026-06-30 17:55:06
○ 2026-06-30 17:55:10

●MXmail.superusers.jp2017-03-22 → 2026-06-30 · 2 obs

● 2017-03-22 00:08:42
● 2026-06-30 17:55:10

○A133.130.89.762017-03-22 → 2017-03-22 · 3 obs

● 2017-03-22 00:08:42
○ 2026-06-30 17:55:06
○ 2026-06-30 17:55:10

●A133.18.241.1812026-06-30 → 2026-06-30 · 3 obs

○ 2017-03-22 00:08:42
● 2026-06-30 17:55:06
● 2026-06-30 17:55:10

●A2406:8c00:0:3428:133:18:241:1812026-06-30 → 2026-06-30 · 3 obs

○ 2017-03-22 00:08:42
● 2026-06-30 17:55:06
● 2026-06-30 17:55:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	e.dns.jp, f.dns.jp, a.dns.jp, d.dns.jp...	-
superusers.jp	01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp, 04.dnsv.jp	7 records

✅ Authoritative Response

Server:157.7.35.53

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for superusers.jp (unsigned zone)

⏱️ Timing

Total: 1427ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`133.18.241.181`
AAAA	1	`2406:8c00:0:3428:133:18:241:181`
NS	4	`01.dnsv.jp, 02.dnsv.jp...`
MX	1	`mail.superusers.jp (pri: 10)`
TXT	2	`google-site-verification=ozytZNXhenEpdVF, v=spf1 ip4:133.18.241.181 ip6:2406:8c00:`
SOA	1	`01.dnsv.jp hostmaster.dnsv.jp`

📌 Glue Records Collected

Total: 7

Out-of-bailiwick: 7 (01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp...)

Analysis

Hierarchy

superusers.jp serves as the parent of mail.superusers.jp and su001.superusers.jp.

IP Addresses

superusers.jp has two IP addresses: 133.18.241.181 and 2406:8c00:0:3428:133:18:241:181

Additional host names such as mail.superusers.jp, su001.superusers.jp, www.dejavuz.com and dejavuz.com share IP numbers with superusers.jp.

Name Servers

Four name servers handle the delegation for superusers.jp: 01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp and 04.dnsv.jp.

The name servers of superusers.jp overlap at least partially with those of other domains — among them kau-ie-sapporo.com, mkt-i.net, realdunk.com and two more.

Host names pointing to two IP addresses:

01.dnsv.jp maps to two IP addresses — 157.7.32.53 and 2400:8500:3300::53.

03.dnsv.jp maps to two IP addresses — 157.7.34.53 and 2400:8500:3000::53.

04.dnsv.jp maps to two IP addresses — 157.7.35.53 and 2400:8500:3fff::53.

Host names resolving to a single IP address:

02.dnsv.jp points to the IP address 157.7.33.53.

Mail Servers

superusers.jp uses one mail server — mail.superusers.jp.

mail.superusers.jp resolves to two IP numbers — 133.18.241.181 and 2406:8c00:0:3428:133:18:241:181.