okuken.jp - robtex.com

okuken.jp

DNSSEC⚠️ Not signed
A120.136.10.84🇯🇵 XSERVER-AS120.136.8.0/22 XSERVER Inc.
PTRsv583.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
MXokuken.jp ⭐
A120.136.10.84🇯🇵 XSERVER-AS120.136.8.0/22 XSERVER Inc.
PTRsv583.xserver.jp
TXTv=spf1 +a:sv583.xserver.jp +a:okuken.jp +mx include:spf.sender.xserver.jp ~all
SOAns1.xserver.jproot@sv0.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=1785458703

Previously NS for

okuken.jp

MX for

okuken.jp

Same first word

okuken.com
okuken.jp

Similar names

kuoken.com
kenkou.to
kenkou.net
kenkuo.com
kouken.com
uenokk.com
ukenko.com
kouken.co.jp
kenkou.com
uenokk.co.jp
kenkou.cc
kenkou.xyz
kenkou.or.jp
kouken.ricoh
ukkone.herokuapp.com
kenkou.de
kenkou.life
enkoku.com
kouken.net
kkenou.com
kouken.info
kenkuo.net
ukenko.info
koneku.com
konuke.com
kenkou.co.uk
kouken.ne.jp
kenkou.biz
koneku.de
kenkou.info
kenkou.co.jp
kkueno.jp
kenkou.com.cn
nekoku.de
kokune.net
kokune.co.jp
kenkou.ne.jp
okunek.de
kenkou.jp
kenkou.okinawa
kenkou.support
kenkou.plus
kounek.com
keknou.com
kouken.jp
kounek.cz

DNS History

10 records (7 active, 3 former)

20162017201820192020202120222023202420252026NSns1.xserver.jpns2.xserver.jpns3.xserver.jpns4.xserver.jpns5.xserver.jpdns01.muumuu-domain.comdns02.muumuu-domain.comokuken.jpMXokuken.jpA120.136.10.84
○NSdns01.muumuu-domain.com2015-08-07 → 2020-02-28 · 4 obs
● 2015-08-07 20:24:44
● 2020-02-28 19:21:46
○ 2026-06-19 04:20:02
○ 2026-07-31 00:55:44
○NSdns02.muumuu-domain.com2015-08-07 → 2020-02-28 · 4 obs
● 2015-08-07 20:24:44
● 2020-02-28 19:21:46
○ 2026-06-19 04:20:02
○ 2026-07-31 00:55:44
●NSns1.xserver.jp2026-06-19 → 2026-07-31 · 3 obs
○ 2020-02-28 19:21:46
● 2026-06-19 04:20:02
● 2026-07-31 00:55:44
●NSns2.xserver.jp2026-06-19 → 2026-07-31 · 3 obs
○ 2020-02-28 19:21:46
● 2026-06-19 04:20:02
● 2026-07-31 00:55:44
●NSns3.xserver.jp2026-06-19 → 2026-07-31 · 3 obs
○ 2020-02-28 19:21:46
● 2026-06-19 04:20:02
● 2026-07-31 00:55:44
●NSns4.xserver.jp2026-06-19 → 2026-07-31 · 3 obs
○ 2020-02-28 19:21:46
● 2026-06-19 04:20:02
● 2026-07-31 00:55:44
●NSns5.xserver.jp2026-06-19 → 2026-07-31 · 3 obs
○ 2020-02-28 19:21:46
● 2026-06-19 04:20:02
● 2026-07-31 00:55:44
○NSokuken.jp2015-08-07 → 2020-02-28 · 4 obs
● 2015-08-07 20:24:44
● 2020-02-28 19:21:46
○ 2026-06-19 04:20:02
○ 2026-07-31 00:55:44
●MXokuken.jp2015-08-07 → 2026-07-31 · 2 obs
● 2015-08-07 20:24:44
● 2026-07-31 00:55:44
●A120.136.10.842015-08-07 → 2026-07-31 · 2 obs
● 2015-08-07 20:24:44
● 2026-07-31 00:55:44

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpe.dns.jp, g.dns.jp, c.dns.jp, a.dns.jp...-
okuken.jpns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp...11 records

✅ Authoritative Response

Server:183.90.224.226

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for okuken.jp (unsigned zone)

⏱️ Timing

Total: 971ms | Queries: -

📄 Records

TypeCountSample Data
A1120.136.10.84
NS5ns1.xserver.jp, ns5.xserver.jp...
MX1okuken.jp (pri: 0)
TXT1v=spf1 +a:sv583.xserver.jp +a:okuken.jp
SOA1ns1.xserver.jp root.sv0.xserver.jp

📌 Glue Records Collected

Total: 11

Out-of-bailiwick: 11 (ns1.xserver.jp, ns1.xserver.jp, ns1.xserver.jp...)

Analysis

Mail Server Role

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

IP Addresses

okuken.jp has exactly one IP address — 120.136.10.84.

mail.sougaku.com, t-eigo.com, chitaya07.xsrv.jp plus two other host names have IP numbers in common with okuken.jp.

Name Servers

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

okuken.jp has at least partial name server overlap with other domains, such as kisukisyuzou.com, kodudo0829.com, datemaru.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:

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

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

The hostname 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:

The hostname ns2.xserver.jp resolves to 35.72.43.26.

The hostname ns3.xserver.jp resolves to 202.226.36.247.

Mail Servers

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

okuken.jp carries a single IP number, which is 120.136.10.84.