mathstudy.jp - robtex.com

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

mathstudy.jp

DNSSEC⚠️ Not signed
A85.131.209.145🇯🇵 XSERVER-AS85.131.192.0/18 XSERVER Inc.
PTRsv16604.xserver.jp
NSns1.xserver.jp ⭐
A202.226.36.164🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.
A202.226.36.170🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.
A202.226.36.246🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.
PTRns1.xserver.jp
NSns2.xserver.jp
A35.72.43.26🇯🇵 Amazon35.72.0.0/13 EC2 NRT prefix
PTRns2.xserver.jp
NSns3.xserver.jp
A202.226.36.247🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.
PTRns3.xserver.jp
NSns4.xserver.jp
A183.90.224.226🇯🇵 XSERVER-AS183.90.224.0/20 XSERVER Inc.
A183.90.224.230🇯🇵 XSERVER-AS183.90.224.0/20 XSERVER Inc.
A202.226.39.247🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.
PTRns4.xserver.jp
NSns5.xserver.jp
A157.112.182.218🇯🇵 XSERVER-AS157.112.176.0/21 XSERVER Inc.
A157.112.182.220🇯🇵 XSERVER-AS157.112.176.0/21 XSERVER Inc.
A202.226.37.247🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.
PTRns5.xserver.jp
TXTv=spf1 +a:sv16604.xserver.jp +a:mathstudy.jp +mx include:spf.sender.xserver.j...
SOAns1.xserver.jproot@xserver.jp serial=0

jp

DNSSEC🔒 Signed (DS record present)
NSz.dns.jp ⭐
NSa.dns.jp
NSb.dns.jp
NSc.dns.jp
NSd.dns.jp
NSe.dns.jp
NSf.dns.jp
NSg.dns.jp
NSh.dns.jp
SOAz.dns.jproot@dns.jp serial=1789054202

Same first word

mathstudy.network
mathstudy.com
mathstudy.jp
mathstudy.in
mathstudy.dev
mathstudy.kz
mathstudy.tech
mathstudy.help

Similar names

studymath.academy
studymath.top
studymath.space
studymath.net
studymath.buzz
studymath.in

Previous names

mathexamtest.jp
mathey.jp
mathforum.jp
mathgraphic.jp
mathi.jp
mathilda.jp
mathis.jp
mathkangaroo.jp
mathlab.jp
mathlion.jp
mathmagic.jp
mathmath-lab.jp
mathmath.jp
mathnet.jp
mathom.jp
mathpub.jp
mathrg.jp
mathscope.jp
mathsoc.jp

Next names

mathsuke.jp
mathter.jp
mathtore.jp
mathtrain.jp
mathusalem.jp
mathusers.jp
mathworks.jp
mati-kado.jp
mati.jp
matiar.jp
matiaru.jp
matically.jp
matico.jp
matier.jp
matikado.jp
matilda-designers.jp
matilda2023.jp
matilda22.jp
matilde.jp
matin.jp

DNS History

6 records (6 active, 0 former)

NSns1.xserver.jpns2.xserver.jpns3.xserver.jpns4.xserver.jpns5.xserver.jpA85.131.209.145
●NSns1.xserver.jp2026-09-01 → 2026-09-10 · 2 obs
● 2026-09-01 10:20:58
● 2026-09-10 15:48:56
●NSns2.xserver.jp2026-09-01 → 2026-09-10 · 2 obs
● 2026-09-01 10:20:58
● 2026-09-10 15:48:56
●NSns3.xserver.jp2026-09-01 → 2026-09-10 · 2 obs
● 2026-09-01 10:20:58
● 2026-09-10 15:48:56
●NSns4.xserver.jp2026-09-01 → 2026-09-10 · 2 obs
● 2026-09-01 10:20:58
● 2026-09-10 15:48:56
●NSns5.xserver.jp2026-09-01 → 2026-09-10 · 2 obs
● 2026-09-01 10:20:58
● 2026-09-10 15:48:56
●A85.131.209.1452026-09-01 → 2026-09-10 · 2 obs
● 2026-09-01 10:20:58
● 2026-09-10 15:48:56

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpa.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...-
mathstudy.jpns3.xserver.jp, ns5.xserver.jp, ns4.xserver.jp, ns2.xserver.jp...11 records

✅ Authoritative Response

Server:202.226.36.247

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mathstudy.jp (unsigned zone)

⏱️ Timing

Total: 1081ms | Queries: -

📄 Records

TypeCountSample Data
A185.131.209.145
NS5ns1.xserver.jp, ns4.xserver.jp...
TXT1v=spf1 +a:sv16604.xserver.jp +a:mathstud
SOA1ns1.xserver.jp root.xserver.jp

📌 Glue Records Collected

Total: 11

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

Analysis

IP Addresses

mathstudy.jp resolves to one IP address: 85.131.209.145.

osubbc.com, links-hair-salon.com, tabi-no-sumika.jp and two other host names share IP numbers with mathstudy.jp.

Name Servers

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

mathstudy.jp has at least partial name server overlap with other domains, such as wakuwakunoburin.com, iceburg.jp, timejp.net and two others.

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

Hostnames that resolve to three IP addresses:

ns1.xserver.jp has IP addresses 202.226.36.164, 202.226.36.170 and 202.226.36.246.

ns4.xserver.jp has IP addresses 183.90.224.226, 183.90.224.230 and 202.226.39.247.

ns5.xserver.jp has IP addresses 157.112.182.218, 157.112.182.220 and 202.226.37.247.

Hosts with just one IP address:

ns2.xserver.jp directs to 35.72.43.26.

ns3.xserver.jp directs to 202.226.36.247.