study1.jp - dns.ninja

`study1.jp`

DNSSEC	⚠️ Not signed
A	162.43.122.84^{🇯🇵 XSERVER-AS162.43.0.0/17 XSERVER Inc.}
		PTR	`sv14483.xserver.jp`
NS	`ns1.xserver.jp` ⭐
		A	202.226.36.164^{🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.}
		A	202.226.36.170^{🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.}
		A	202.226.36.246^{🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.}
			PTR	`ns1.xserver.jp`
NS	`ns2.xserver.jp`
		A	35.72.43.26^{🇯🇵 Amazon35.72.0.0/13 EC2 NRT prefix}
			PTR	`ns2.xserver.jp`
NS	`ns3.xserver.jp`
		A	202.226.36.247^{🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.}
			PTR	`ns3.xserver.jp`
NS	`ns4.xserver.jp`
		A	183.90.224.226^{🇯🇵 XSERVER-AS183.90.224.0/20 XSERVER Inc.}
		A	183.90.224.230^{🇯🇵 XSERVER-AS183.90.224.0/20 XSERVER Inc.}
		A	202.226.39.247^{🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.}
			PTR	`ns4.xserver.jp`
NS	`ns5.xserver.jp`
		A	157.112.182.218^{🇯🇵 XSERVER-AS157.112.176.0/21 XSERVER Inc.}
		A	157.112.182.220^{🇯🇵 XSERVER-AS157.112.176.0/21 XSERVER Inc.}
		A	202.226.37.247^{🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.}
			PTR	`ns5.xserver.jp`
MX	`study1.jp` ⭐
		A	162.43.122.84^{🇯🇵 XSERVER-AS162.43.0.0/17 XSERVER Inc.}
			PTR	`sv14483.xserver.jp`
TXT	`v=spf1 +a:sv14483.xserver.jp +a:study1.jp +mx include:spf.sender.xserver.jp ~all`
SOA	`ns1.xserver.jp`root@xserver.jp serial=0

`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=1786361402

WOT: SAFE (60/100)
📈 Tranco rank: #705,059

MX for

study1.jp

Subdomains

www.study1.jp

Same first word

study1.xyz

study1.net

study1.jp

study1.com

Similar names

1study.com

1study.net

DNS History

13 records (7 active, 6 former)

●NSns1.xserver.jp2026-03-04 → 2026-08-10 · 3 obs

○ 2020-04-01 10:27:46
● 2026-03-04 08:21:08
● 2026-08-10 12:45:28

●NSns2.xserver.jp2026-03-04 → 2026-08-10 · 3 obs

○ 2020-04-01 10:27:46
● 2026-03-04 08:21:08
● 2026-08-10 12:45:28

●NSns3.xserver.jp2026-03-04 → 2026-08-10 · 3 obs

○ 2020-04-01 10:27:46
● 2026-03-04 08:21:08
● 2026-08-10 12:45:28

○NSns4.cpi.ad.jp2015-07-25 → 2020-04-01 · 4 obs

● 2015-07-25 19:33:54
● 2020-04-01 10:27:46
○ 2026-03-04 08:21:08
○ 2026-08-10 12:45:28

●NSns4.xserver.jp2026-03-04 → 2026-08-10 · 3 obs

○ 2020-04-01 10:27:46
● 2026-03-04 08:21:08
● 2026-08-10 12:45:28

○NSns5.cpi.ad.jp2015-07-25 → 2020-04-01 · 4 obs

● 2015-07-25 19:33:54
● 2020-04-01 10:27:46
○ 2026-03-04 08:21:08
○ 2026-08-10 12:45:28

●NSns5.xserver.jp2026-03-04 → 2026-08-10 · 3 obs

○ 2020-04-01 10:27:46
● 2026-03-04 08:21:08
● 2026-08-10 12:45:28

●MXstudy1.jp2026-03-04 → 2026-08-10 · 3 obs

○ 2020-04-01 10:27:46
● 2026-03-04 08:21:08
● 2026-08-10 12:45:28

○MXvlmx20.secure.ne.jp2015-07-25 → 2020-04-01 · 4 obs

● 2015-07-25 19:33:54
● 2020-04-01 10:27:46
○ 2026-03-04 08:21:08
○ 2026-08-10 12:45:28

○MXvlmx21.secure.ne.jp2015-07-25 → 2020-04-01 · 4 obs

● 2015-07-25 19:33:54
● 2020-04-01 10:27:46
○ 2026-03-04 08:21:08
○ 2026-08-10 12:45:28

○MXvlmx22.secure.ne.jp2015-07-25 → 2020-04-01 · 4 obs

● 2015-07-25 19:33:54
● 2020-04-01 10:27:46
○ 2026-03-04 08:21:08
○ 2026-08-10 12:45:28

○A150.60.53.2332015-07-25 → 2020-04-01 · 4 obs

● 2015-07-25 19:33:54
● 2020-04-01 10:27:46
○ 2026-03-04 08:21:08
○ 2026-08-10 12:45:28

●A162.43.122.842026-03-04 → 2026-08-10 · 3 obs

○ 2020-04-01 10:27:46
● 2026-03-04 08:21:08
● 2026-08-10 12:45:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...	-
study1.jp	ns4.xserver.jp, ns5.xserver.jp, ns3.xserver.jp, ns2.xserver.jp...	11 records

✅ Authoritative Response

Server:157.112.182.218

NS records: ns4.xserver.jp, ns5.xserver.jp, ns3.xserver.jp, ns2.xserver.jp, ns1.xserver.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for study1.jp (unsigned zone)

⏱️ Timing

Total: 3819ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`162.43.122.84`
NS	5	`ns2.xserver.jp, ns1.xserver.jp...`
MX	1	`study1.jp (pri: 0)`
TXT	1	`v=spf1 +a:sv14483.xserver.jp +a:study1.j`
SOA	1	`ns1.xserver.jp root.xserver.jp`

📌 Glue Records Collected

Total: 11

Out-of-bailiwick: 11 (ns5.xserver.jp, ns5.xserver.jp, ns5.xserver.jp...)

Analysis

Hierarchy

study1.jp serves as the parent of www.study1.jp.

Mail Server Role

study1.jp serves as a mail server for study1.jp.

IP Addresses

study1.jp has exactly one IP address — 162.43.122.84.

kinsou.jp, pcpm.jp, liveidol.blog plus two other host names have IP numbers in common with study1.jp.

Name Servers

Five name servers handle delegation for study1.jp: ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp and two others.

study1.jp has at least partial name server overlap with other domains, such as daito-japan.co.jp, teiougaku.net, buonafortuna.net and two others.

It is common to see these name servers used together with name servers ns4.xserver.jp and ns5.xserver.jp.

Host names carrying three IP numbers:

ns1.xserver.jp points to 202.226.36.164, 202.226.36.170 and 202.226.36.246.

ns4.xserver.jp points to 183.90.224.226, 183.90.224.230 and 202.226.39.247.

ns5.xserver.jp points to 157.112.182.218, 157.112.182.220 and 202.226.37.247.

Host names resolving to a single IP address:

ns2.xserver.jp points to 35.72.43.26.

ns3.xserver.jp points to 202.226.36.247.

Mail Servers

study1.jp uses exactly one mail server, which is study1.jp.

study1.jp resolves to a single IP number: 162.43.122.84.