k-four.jp - robtex.com

k-four.jp

DNSSEC⚠️ Not signed
A162.43.120.155🇯🇵 XSERVER-AS162.43.0.0/17 XSERVER Inc.
PTRsv14154.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
MXk-four.jp
A162.43.120.155🇯🇵 XSERVER-AS162.43.0.0/17 XSERVER Inc.
PTRsv14154.xserver.jp
TXTv=spf1 +a:sv14154.xserver.jp +a:k-four.jp +mx include:spf.sender.xserver.jp ~all
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=1784173502

MX for

Same first word

Similar names

DNS History

11 records (7 active, 4 former)

20162017201820192020202120222023202420252026NSns1.xserver.jpns2.xserver.jpns3.xserver.jpns4.xserver.jpns5.xserver.jpmaster.dns.ne.jpns1.dns.ne.jpns2.dns.ne.jpMXk-four.jpA162.43.120.15559.106.19.19
NSmaster.dns.ne.jp2015-07-23 → 2017-05-27 · 4 obs
● 2015-07-23 13:01:46
● 2017-05-27 06:20:38
○ 2026-05-30 21:54:24
○ 2026-07-16 04:01:20
NSns1.dns.ne.jp2015-07-23 → 2017-05-27 · 4 obs
● 2015-07-23 13:01:46
● 2017-05-27 06:20:38
○ 2026-05-30 21:54:24
○ 2026-07-16 04:01:20
NSns1.xserver.jp2026-05-30 → 2026-07-16 · 3 obs
○ 2017-05-27 06:20:38
● 2026-05-30 21:54:24
● 2026-07-16 04:01:20
NSns2.dns.ne.jp2015-07-23 → 2017-05-27 · 4 obs
● 2015-07-23 13:01:46
● 2017-05-27 06:20:38
○ 2026-05-30 21:54:24
○ 2026-07-16 04:01:20
NSns2.xserver.jp2026-05-30 → 2026-07-16 · 3 obs
○ 2017-05-27 06:20:38
● 2026-05-30 21:54:24
● 2026-07-16 04:01:20
NSns3.xserver.jp2026-05-30 → 2026-07-16 · 3 obs
○ 2017-05-27 06:20:38
● 2026-05-30 21:54:24
● 2026-07-16 04:01:20
NSns4.xserver.jp2026-05-30 → 2026-07-16 · 3 obs
○ 2017-05-27 06:20:38
● 2026-05-30 21:54:24
● 2026-07-16 04:01:20
NSns5.xserver.jp2026-05-30 → 2026-07-16 · 3 obs
○ 2017-05-27 06:20:38
● 2026-05-30 21:54:24
● 2026-07-16 04:01:20
MXk-four.jp2015-07-23 → 2026-07-16 · 2 obs
● 2015-07-23 13:01:46
● 2026-07-16 04:01:20
A162.43.120.1552026-05-30 → 2026-07-16 · 3 obs
○ 2017-05-27 06:20:38
● 2026-05-30 21:54:24
● 2026-07-16 04:01:20
A59.106.19.192015-07-23 → 2017-05-27 · 4 obs
● 2015-07-23 13:01:46
● 2017-05-27 06:20:38
○ 2026-05-30 21:54:24
○ 2026-07-16 04:01:20

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpa.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...-
k-four.jpns4.xserver.jp, ns5.xserver.jp, ns1.xserver.jp, ns2.xserver.jp...11 records

✅ Authoritative Response

Server:157.112.182.218

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for k-four.jp (unsigned zone)

⏱️ Timing

Total: 948ms | Queries: -

📄 Records

TypeCountSample Data
A1162.43.120.155
NS5ns3.xserver.jp, ns2.xserver.jp...
MX1k-four.jp (pri: 0)
TXT1v=spf1 +a:sv14154.xserver.jp +a:k-four.j
SOA1ns1.xserver.jp root.xserver.jp

📌 Glue Records Collected

Total: 11

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

Analysis

Mail Server Role

k-four.jp serves as a mail server for k-four.jp.

IP Addresses

k-four.jp has exactly one IP address — 162.43.120.155.

www.trainer.agency, ymge.com, lion-do.jp plus two other host names have IP numbers in common with k-four.jp.

Name Servers

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

At least some of k-four.jp's name servers are shared with other domains, for example flat-kids.com, zenryoku-usagi.com, tochicli.com and two more.

These name servers tend to be deployed in combination with the name servers ns4.xserver.jp and ns5.xserver.jp.

Host names carrying three IP numbers:

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

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

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

Host names resolving to a single IP address:

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

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

Mail Servers

k-four.jp uses exactly one mail server, which is k-four.jp.

k-four.jp resolves to 162.43.120.155 and no other IP number.