`dotstudy.jp`

DNSSEC	⚠️ Not signed
A	160.251.151.114^{🇯🇵 GMOOSK-NET160.251.151.0/24 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
		PTR	`s287.xrea.com`
NS	`ns1.value-domain.com` ⭐
		A	172.64.52.38^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns2.value-domain.com`
		A	172.64.53.3^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns3.value-domain.com` ⚠️ Not in zone NS records
		A	172.64.52.38^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
MX	`dotstudy.jp` ⭐
		A	160.251.151.114^{🇯🇵 GMOOSK-NET160.251.151.0/24 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
			PTR	`s287.xrea.com`
TXT	`v=spf1 ip4:160.251.151.114 include:mxr.valueserver.jp -all`
SOA	`ns1.value-domain.com`hostmaster@dotstudy.jp 2026-01-06 #17

`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=1786626903

MX for

dotstudy.jp

Subdomains

m1.dotstudy.jp

Same first word

dotstudy.jp

Similar names

studydot.com

DNS History

6 records (5 active, 1 former)

●NSns1.value-domain.com2015-07-07 → 2026-08-13 · 2 obs

● 2015-07-07 23:37:06
● 2026-08-13 13:24:24

●NSns2.value-domain.com2015-07-07 → 2026-08-13 · 2 obs

● 2015-07-07 23:37:06
● 2026-08-13 13:24:24

●NSns3.value-domain.com2026-04-09 → 2026-08-13 · 3 obs

○ 2015-07-07 23:37:06
● 2026-04-09 18:47:44
● 2026-08-13 13:24:24

●MXdotstudy.jp2026-04-09 → 2026-08-13 · 3 obs

○ 2018-06-02 07:54:12
● 2026-04-09 18:47:44
● 2026-08-13 13:24:24

○MXm1.dotstudy.jp2015-07-07 → 2018-06-02 · 4 obs

● 2015-07-07 23:37:06
● 2018-06-02 07:54:12
○ 2026-04-09 18:47:44
○ 2026-08-13 13:24:24

●A160.251.151.1142026-04-09 → 2026-08-13 · 2 obs

● 2026-04-09 18:47:44
● 2026-08-13 13:24:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...	-
dotstudy.jp	ns2.value-domain.com, ns1.value-domain.com, ns3.value-domain.com	-

✅ Authoritative Response

Server:172.64.53.3

NS records: ns2.value-domain.com, ns1.value-domain.com, ns3.value-domain.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dotstudy.jp (unsigned zone)

⏱️ Timing

Total: 949ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`160.251.151.114`
NS	2	`ns2.value-domain.com, ns1.value-domain.com`
MX	1	`dotstudy.jp (pri: 10)`
TXT	1	`v=spf1 ip4:160.251.151.114 include:mxr.v`
SOA	1	`ns1.value-domain.com hostmaster.dotstudy`

Analysis

Hierarchy

m1.dotstudy.jp is a subdomain of dotstudy.jp.

Mail Server Role

The MX record for dotstudy.jp points back to dotstudy.jp — it is its own mail server.

IP Addresses

dotstudy.jp directs to one IP number, which is 160.251.151.114.

Among the host names that share IP numbers with dotstudy.jp are mail.cafe-prado.jp, xn--x-3euthyaf2i.com, m1.dotstudy.jp and two others.

Name Servers

dotstudy.jp is delegated to three name servers: ns1.value-domain.com, ns2.value-domain.com and ns3.value-domain.com.

The name servers of dotstudy.jp overlap at least partially with those of other domains — among them nakahara.co.jp, strawberry879.com, siemple.link and two more.

These name servers are routinely co-deployed with the name servers ns4.value-domain.com, ns5.value-domain.com, ns11.value-domain.com and two others.

Each of the hostnames ns1.value-domain.com, ns2.value-domain.com and ns3.value-domain.com has a single IP address assigned: ns1.value-domain.com directs to 172.64.52.38, ns2.value-domain.com directs to 172.64.53.3 and ns3.value-domain.com directs to 172.64.52.38.

ns1.value-domain.com and ns3.value-domain.com are host names that each point to 172.64.52.38 IP addresses.

Mail Servers

The MX record for dotstudy.jp points to a single mail server: dotstudy.jp.

dotstudy.jp resolves to a single IP number: 160.251.151.114.

dotstudy.jp - robtex.com

dotstudy.jp

jp