pre21.jp - robtex.com

pre21.jp

DNSSEC⚠️ Not signed
A162.43.105.96🇯🇵 XSERVER-AS162.43.0.0/17 XSERVER Inc.
PTRsv705.xbiz.ne.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
MXmail.pre21.jp ⭐
A183.90.242.31🇯🇵 XSERVER-AS183.90.240.0/20 XSERVER Inc.
PTRsv2130.xserver.jp
TXTv=spf1 +a:sv2130.xserver.jp +a:pre21.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=1776140102
WOT: SAFE (49/100)

Previously MX for

pre21.jp

Subdomains

mail.pre21.jp
ns.pre21.jp

Same first word

pre21.com
pre21.jp

Similar names

21erp.com
erp21.com
erp21.com.sg
12pre.com
12erp.com

DNS History

12 records (7 active, 5 former)

20162017201820192020202120222023202420252026NSns1.xserver.jpns2.xserver.jpns3.xserver.jpns4.xserver.jpns5.xserver.jpns.pre21.jpns4.sphere.ad.jpMXmail.pre21.jpkokura.sakura.ne.jppre21.jpA162.43.105.96158.199.249.212
○NSns.pre21.jp2015-06-22 → 2016-04-21 · 4 obs
● 2015-06-22 17:46:56
● 2016-04-21 14:29:20
○ 2017-03-20 16:48:12
○ 2026-04-14 04:19:54
●NSns1.xserver.jp2017-03-20 → 2026-04-14 · 3 obs
○ 2016-04-21 14:29:20
● 2017-03-20 16:48:12
● 2026-04-14 04:19:54
●NSns2.xserver.jp2017-03-20 → 2026-04-14 · 3 obs
○ 2016-04-21 14:29:20
● 2017-03-20 16:48:12
● 2026-04-14 04:19:54
●NSns3.xserver.jp2017-03-20 → 2026-04-14 · 3 obs
○ 2016-04-21 14:29:20
● 2017-03-20 16:48:12
● 2026-04-14 04:19:54
○NSns4.sphere.ad.jp2015-06-22 → 2016-04-21 · 4 obs
● 2015-06-22 17:46:56
● 2016-04-21 14:29:20
○ 2017-03-20 16:48:12
○ 2026-04-14 04:19:54
●NSns4.xserver.jp2017-03-20 → 2026-04-14 · 3 obs
○ 2016-04-21 14:29:20
● 2017-03-20 16:48:12
● 2026-04-14 04:19:54
●NSns5.xserver.jp2017-03-20 → 2026-04-14 · 3 obs
○ 2016-04-21 14:29:20
● 2017-03-20 16:48:12
● 2026-04-14 04:19:54
○MXkokura.sakura.ne.jp2015-06-22 → 2016-04-21 · 4 obs
● 2015-06-22 17:46:56
● 2016-04-21 14:29:20
○ 2017-03-20 16:48:12
○ 2026-04-14 04:19:54
●MXmail.pre21.jp2017-03-20 → 2026-04-14 · 3 obs
○ 2016-04-21 14:29:20
● 2017-03-20 16:48:12
● 2026-04-14 04:19:54
○MXpre21.jp2015-06-22 → 2016-04-21 · 4 obs
● 2015-06-22 17:46:56
● 2016-04-21 14:29:20
○ 2017-03-20 16:48:12
○ 2026-04-14 04:19:54
○A158.199.249.2122015-06-22 → 2017-03-20 · 4 obs
● 2015-06-22 17:46:56
● 2017-03-20 16:48:12
○ 2026-02-15 03:54:12
○ 2026-04-14 04:19:54
●A162.43.105.962026-02-15 → 2026-04-14 · 3 obs
○ 2017-03-20 16:48:12
● 2026-02-15 03:54:12
● 2026-04-14 04:19:54

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpa.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...-
pre21.jpns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp...11 records

✅ Authoritative Response

Server:202.226.36.164

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 pre21.jp (unsigned zone)

⏱️ Timing

Total: 2921ms | Queries: -

📄 Records

TypeCountSample Data
A1162.43.105.96
NS5ns5.xserver.jp, ns2.xserver.jp...
MX1mail.pre21.jp (pri: 10)
TXT1v=spf1 +a:sv2130.xserver.jp +a:pre21.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

Hierarchy

pre21.jp is parent of mail.pre21.jp and ns.pre21.jp.

IP Addresses

pre21.jp resolves to a single IP address: 162.43.105.96.

Other host names including www.wirelesswire.jp, www.chuoko.ac.jp, videkin.com, sv705.xbiz.ne.jp and yutaka-s.co.jp share IP numbers with pre21.jp.

Name Servers

pre21.jp is delegated to five name servers: ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp and ns5.xserver.jp.

pre21.jp at least partially shares name servers with other domains, including prosperity.bz, kanox.net, komuro.biz, iwataglass.com and eco-h.co.jp.

Host names with three IP numbers:

ns1.xserver.jp points to: 202.226.36.164, 202.226.36.170 and 202.226.36.246.

ns4.xserver.jp points to: 183.90.224.226, 183.90.224.230 and 202.226.39.247.

ns5.xserver.jp points to: 157.112.182.218, 157.112.182.220 and 202.226.37.247.

Host names with one IP number:

ns2.xserver.jp points to: 35.72.43.26.

ns3.xserver.jp points to: 202.226.36.247.

Mail Servers

pre21.jp is handled by a single mail server, mail.pre21.jp.

mail.pre21.jp points to a single IP: 183.90.242.31.