1study.net - dns.ninja

`1study.net`

DNSSEC	⚠️ Not signed
A	183.181.83.12^{🇯🇵 XSERVER-AS183.181.80.0/22 XSERVER Inc.}
		PTR	`sv10011.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` ⚠️ Not in parent delegation
		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	`1study.net` ⭐
		A	183.181.83.12^{🇯🇵 XSERVER-AS183.181.80.0/22 XSERVER Inc.}
			PTR	`sv10011.xserver.jp`
TXT	`v=spf1 +a:sv10011.xserver.jp +a:1study.net +mx include:spf.sender.xserver.jp ...`
SOA	`ns1.xserver.jp`root@xserver.jp serial=0

`net`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1786406884

MX for

1study.net

Same first word

1study.com

1study.net

Similar names

study1.jp

study1.com

study1.xyz

study1.net

DNS History

15 records (7 active, 8 former)

○NSdns10.hichina.com2015-08-22 → 2016-04-22 · 5 obs

○ 2007-09-22 06:21:34
● 2015-08-22 14:36:10
● 2016-04-22 16:57:20
○ 2017-04-09 01:31:54
○ 2026-08-11 00:16:14

○NSdns9.hichina.com2015-08-22 → 2016-04-22 · 5 obs

○ 2007-09-22 06:21:34
● 2015-08-22 14:36:10
● 2016-04-22 16:57:20
○ 2017-04-09 01:31:54
○ 2026-08-11 00:16:14

○NSexpirens3.hichina.com2017-04-09 → 2017-04-09 · 4 obs

○ 2016-04-22 16:57:20
● 2017-04-09 01:31:54
○ 2026-02-24 08:53:46
○ 2026-08-11 00:16:14

○NSexpirens4.hichina.com2017-04-09 → 2017-04-09 · 4 obs

○ 2016-04-22 16:57:20
● 2017-04-09 01:31:54
○ 2026-02-24 08:53:46
○ 2026-08-11 00:16:14

○NSns.xinnet.cn2007-09-22 → 2007-09-22 · 3 obs

● 2007-09-22 06:21:34
○ 2015-08-22 14:36:10
○ 2026-08-11 00:16:14

○NSns.xinnetdns.com2007-09-22 → 2007-09-22 · 3 obs

● 2007-09-22 06:21:34
○ 2015-08-22 14:36:10
○ 2026-08-11 00:16:14

●NSns1.xserver.jp2026-02-24 → 2026-08-11 · 3 obs

○ 2017-04-09 01:31:54
● 2026-02-24 08:53:46
● 2026-08-11 00:16:14

●NSns2.xserver.jp2026-02-24 → 2026-08-11 · 3 obs

○ 2017-04-09 01:31:54
● 2026-02-24 08:53:46
● 2026-08-11 00:16:14

●NSns3.xserver.jp2026-02-24 → 2026-08-11 · 3 obs

○ 2017-04-09 01:31:54
● 2026-02-24 08:53:46
● 2026-08-11 00:16:14

●NSns4.xserver.jp2026-02-24 → 2026-08-11 · 3 obs

○ 2017-04-09 01:31:54
● 2026-02-24 08:53:46
● 2026-08-11 00:16:14

●NSns5.xserver.jp2026-02-24 → 2026-08-11 · 3 obs

○ 2017-04-09 01:31:54
● 2026-02-24 08:53:46
● 2026-08-11 00:16:14

●MX1study.net2026-02-24 → 2026-08-11 · 2 obs

● 2026-02-24 08:53:46
● 2026-08-11 00:16:14

○A121.199.21.942016-01-03 → 2016-04-22 · 4 obs

● 2016-01-03 22:05:12
● 2016-04-22 16:57:20
○ 2017-04-09 01:31:54
○ 2026-08-11 00:16:14

●A183.181.83.122026-02-24 → 2026-08-11 · 3 obs

○ 2017-04-09 01:31:54
● 2026-02-24 08:53:46
● 2026-08-11 00:16:14

○A47.89.58.1412017-04-09 → 2017-04-09 · 4 obs

○ 2016-04-22 16:57:20
● 2017-04-09 01:31:54
○ 2026-02-24 08:53:46
○ 2026-08-11 00:16:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	m.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net, f.gtld-servers.net...	-
1study.net	ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp	-

✅ Authoritative Response

Server:202.226.36.170

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 1study.net (unsigned zone)

⏱️ Timing

Total: 1151ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`183.181.83.12`
NS	5	`ns5.xserver.jp, ns3.xserver.jp...`
MX	1	`1study.net (pri: 0)`
TXT	1	`v=spf1 +a:sv10011.xserver.jp +a:1study.n`
SOA	1	`ns1.xserver.jp root.xserver.jp`

Analysis

Mail Server Role

1study.net is listed as a mail server for itself.

IP Addresses

1study.net resolves to one IP address: 183.181.83.12.

sv10011.xserver.jp, haleid.com, renard.co.jp and two other host names share IP numbers with 1study.net.

Name Servers

1study.net has five name servers, which are ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp and two others.

1study.net partially shares its NS delegation with several other domains, including ooma.co.jp, marin-seikotsu.com, iiplane.com and two others.

These name servers are regularly seen alongside ns4.xserver.jp and ns5.xserver.jp as name servers.

Hostnames that resolve to three IP addresses:

ns1.xserver.jp resolves to three addresses: 202.226.36.164, 202.226.36.170 and 202.226.36.246.

ns4.xserver.jp resolves to three addresses: 183.90.224.226, 183.90.224.230 and 202.226.39.247.

ns5.xserver.jp resolves to three addresses: 157.112.182.218, 157.112.182.220 and 202.226.37.247.

Hosts with just one IP address:

ns2.xserver.jp points to the IP address 35.72.43.26.

ns3.xserver.jp points to the IP address 202.226.36.247.

Mail Servers

Mail for 1study.net is handled by one mail server — 1study.net.

There is one IP number for 1study.net: 183.181.83.12.