plus-u.jp - robtex.com

plus-u.jp

DNSSEC⚠️ Not signed
A85.131.213.5🇯🇵 XSERVER-AS85.131.192.0/18 XSERVER Inc.
PTRsv16624.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 ⚠️ Not in parent delegation
A202.226.36.247🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.
PTRns3.xserver.jp
NSns4.xserver.jp ⚠️ Not in parent delegation
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 ⚠️ Not in parent delegation
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
MXplus-u.jp ⭐
A85.131.213.5🇯🇵 XSERVER-AS85.131.192.0/18 XSERVER Inc.
PTRsv16624.xserver.jp
TXTv=spf1 +a:sv16624.xserver.jp +a:plus-u.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=1775471403
WOT: SAFE (62/100)

Previously NS for

plus-u.jp

MX for

plus-u.jp

Subdomains

ns2.plus-u.jp

Same first word

plus-u.com.au
plus-u.jp
plus-u.net

Similar names

u-plus.org
u-plus.net
u-plus.me
u-plus.com.cn
u-plus.co
upl-us.com

DNS History

17 records (7 active, 10 former)

20162017201820192020202120222023202420252026NSns1.xserver.jpns2.xserver.jpns3.xserver.jpns4.xserver.jpns5.xserver.jpns1.plus-u.jpns1.sedoparking.comns2.plus-u.jpns2.sedoparking.complus-u.jpMXplus-u.jplocalhostmail.uat.ne.jpmail2.uat.ne.jpA85.131.213.5202.225.1.13672.52.4.119
○NSns1.plus-u.jp2015-08-06 → 2016-04-18 · 4 obs
● 2015-08-06 15:52:16
● 2016-04-18 06:41:52
○ 2016-12-09 17:33:50
○ 2026-04-06 11:01:24
○NSns1.sedoparking.com2016-12-09 → 2017-01-09 · 5 obs
○ 2016-04-18 06:41:52
● 2016-12-09 17:33:50
● 2017-01-09 00:07:54
○ 2026-04-03 03:24:02
○ 2026-04-06 11:01:24
●NSns1.xserver.jp2026-04-03 → 2026-04-06 · 3 obs
○ 2017-01-09 00:07:54
● 2026-04-03 03:24:02
● 2026-04-06 11:01:24
○NSns2.plus-u.jp2015-08-06 → 2016-04-18 · 4 obs
● 2015-08-06 15:52:16
● 2016-04-18 06:41:52
○ 2016-12-09 17:33:50
○ 2026-04-06 11:01:24
○NSns2.sedoparking.com2016-12-09 → 2017-01-09 · 5 obs
○ 2016-04-18 06:41:52
● 2016-12-09 17:33:50
● 2017-01-09 00:07:54
○ 2026-04-03 03:24:02
○ 2026-04-06 11:01:24
●NSns2.xserver.jp2026-04-03 → 2026-04-06 · 3 obs
○ 2017-01-09 00:07:54
● 2026-04-03 03:24:02
● 2026-04-06 11:01:24
●NSns3.xserver.jp2026-04-03 → 2026-04-06 · 3 obs
○ 2017-01-09 00:07:54
● 2026-04-03 03:24:02
● 2026-04-06 11:01:24
●NSns4.xserver.jp2026-04-03 → 2026-04-06 · 3 obs
○ 2017-01-09 00:07:54
● 2026-04-03 03:24:02
● 2026-04-06 11:01:24
●NSns5.xserver.jp2026-04-03 → 2026-04-06 · 3 obs
○ 2017-01-09 00:07:54
● 2026-04-03 03:24:02
● 2026-04-06 11:01:24
○NSplus-u.jp2015-08-06 → 2016-04-18 · 4 obs
● 2015-08-06 15:52:16
● 2016-04-18 06:41:52
○ 2016-12-09 17:33:50
○ 2026-04-06 11:01:24
○MXlocalhost2016-12-09 → 2017-01-09 · 5 obs
○ 2016-04-18 06:41:52
● 2016-12-09 17:33:50
● 2017-01-09 00:07:54
○ 2026-04-03 03:24:02
○ 2026-04-06 11:01:24
○MXmail.uat.ne.jp2015-08-06 → 2016-04-18 · 4 obs
● 2015-08-06 15:52:16
● 2016-04-18 06:41:52
○ 2016-12-09 17:33:50
○ 2026-04-06 11:01:24
○MXmail2.uat.ne.jp2015-08-06 → 2016-04-18 · 4 obs
● 2015-08-06 15:52:16
● 2016-04-18 06:41:52
○ 2016-12-09 17:33:50
○ 2026-04-06 11:01:24
●MXplus-u.jp2026-04-03 → 2026-04-06 · 3 obs
○ 2017-01-09 00:07:54
● 2026-04-03 03:24:02
● 2026-04-06 11:01:24
○A202.225.1.1362015-08-06 → 2016-04-18 · 4 obs
● 2015-08-06 15:52:16
● 2016-04-18 06:41:52
○ 2016-12-09 17:33:50
○ 2026-04-06 11:01:24
○A72.52.4.1192016-12-09 → 2017-01-09 · 5 obs
○ 2016-04-18 06:41:52
● 2016-12-09 17:33:50
● 2017-01-09 00:07:54
○ 2026-04-03 03:24:02
○ 2026-04-06 11:01:24
●A85.131.213.52026-04-03 → 2026-04-06 · 3 obs
○ 2017-01-09 00:07:54
● 2026-04-03 03:24:02
● 2026-04-06 11:01:24

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpg.dns.jp, h.dns.jp, a.dns.jp, d.dns.jp...-
plus-u.jpns1.xserver.jp, ns2.xserver.jp4 records

✅ Authoritative Response

Server:202.226.36.246

NS records: ns1.xserver.jp, ns2.xserver.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for plus-u.jp (unsigned zone)

⏱️ Timing

Total: 878ms | Queries: -

📄 Records

TypeCountSample Data
A185.131.213.5
NS5ns5.xserver.jp, ns3.xserver.jp...
MX1plus-u.jp (pri: 0)
TXT1v=spf1 +a:sv16624.xserver.jp +a:plus-u.j
SOA1ns1.xserver.jp root.xserver.jp

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns2.xserver.jp, ns1.xserver.jp, ns1.xserver.jp...)

Analysis

Hierarchy

plus-u.jp is the parent of ns2.plus-u.jp.

Mail Server Role

plus-u.jp serves as the mail server for plus-u.jp.

IP Addresses

plus-u.jp resolves to a single IP address: 85.131.213.5.

Other host names including amaniyu.jp, mail.maharishi.jp, www.upyca.com, lawit.jp and tsukada-lp.com share IP numbers with plus-u.jp.

Name Servers

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

plus-u.jp at least partially shares name servers with other domains, including bonbi.co.jp, bc-net.co.jp, kishihoikuen.ed.jp, sunotice.com and skylon.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

A single mail server handles plus-u.jp.

plus-u.jp points to a single IP: 85.131.213.5.