studyup.jp - robtex.com

studyup.jp

DNSSEC⚠️ Not signed
A162.43.105.121🇯🇵 XSERVER-AS162.43.0.0/17 XSERVER Inc.
PTRsv740.xbiz.ne.jp
NSns1.xbiz.ne.jp ⭐
A157.112.182.247🇯🇵 XSERVER-AS157.112.176.0/21 XSERVER Inc.
PTRns1.xbiz.ne.jp
NSns2.xbiz.ne.jp
A35.76.79.244🇯🇵 Amazon35.72.0.0/13 EC2 NRT prefix
PTRns2.xbiz.ne.jp
NSns3.xbiz.ne.jp
A157.112.191.237🇯🇵 XSERVER-AS157.112.184.0/21 XSERVER Inc.
PTRns3.xbiz.ne.jp
MXaspmx.l.google.com ⭐
A2a00:1450:4009:c0f::1b🇬🇧 Google2a00:1450:4009::/48
PTRyulhrs-in-f27.1e100.net
A108.177.15.26🇺🇸 Google108.177.15.0/24
PTRwr-in-f26.1e100.net
MXalt1.aspmx.l.google.com(5)
A2607:f8b0:4023:2801::1a🇺🇸 Google2607:f8b0::/32
PTRlcausi-in-f26.1e100.net
A192.178.128.27🇺🇸 Google192.178.128.0/24
PTRlcausi-in-f27.1e100.net
MXalt2.aspmx.l.google.com(5)
A2a00:1450:4001:c21::1a🇩🇪 Google2a00:1450:4001::/48
PTRlcfrai-in-f26.1e100.net
A192.178.213.26🇺🇸 Google192.178.213.0/24
PTRyugrqzs-in-f26.1e100.net
MXalt3.aspmx.l.google.com(10)
A2a00:1450:4025:c01::1b🇵🇱 Google2a00:1450:4025::/48
PTRrd-in-f27.1e100.net
A142.251.127.26🇺🇸 Google142.251.127.0/24
PTRlcfrai-in-f26.1e100.net
MXalt4.aspmx.l.google.com(10)
A2607:f8b0:4003:c4a::1b🇺🇸 Google2607:f8b0:4003::/48
PTRyutulth-in-f27.1e100.net
A142.251.96.26🇺🇸 Google142.250.0.0/15
PTRyutulth-in-f26.1e100.net
TXTv=spf1 +a:sv740.xbiz.ne.jp +a:studyup.jp +mx include:spf.sender.xserver.jp in...
SOAns1.xbiz.ne.jproot@xbiz.ne.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=1774372502

Subdomains

www.studyup.jp

Same first word

studyup.de
studyup.pt
studyup.com
studyup.com.vn
studyup.jp
studyup.net
studyup.club
studyup.pk

Similar names

upstudy.ai
upstudy.pro
upstudy.net
pustudy.com
upstudy.ru
upstudy.com.br
upstudy.com
upstudy.org

DNS History

14 records (9 active, 5 former)

20162017201820192020202120222023202420252026NSns1.xbiz.ne.jpns2.xbiz.ne.jpns3.xbiz.ne.jpuns01.lolipop.jpuns02.lolipop.jpMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.commx01.lolipop.jpA162.43.105.121157.7.107.39203.189.109.166
●NSns1.xbiz.ne.jp2026-03-13 → 2026-03-24 · 3 obs
○ 2017-03-23 01:32:58
● 2026-03-13 04:14:32
● 2026-03-24 17:42:04
●NSns2.xbiz.ne.jp2026-03-13 → 2026-03-24 · 3 obs
○ 2017-03-23 01:32:58
● 2026-03-13 04:14:32
● 2026-03-24 17:42:04
●NSns3.xbiz.ne.jp2026-03-13 → 2026-03-24 · 3 obs
○ 2017-03-23 01:32:58
● 2026-03-13 04:14:32
● 2026-03-24 17:42:04
○NSuns01.lolipop.jp2015-08-08 → 2017-03-23 · 4 obs
● 2015-08-08 04:41:18
● 2017-03-23 01:32:58
○ 2026-03-13 04:14:32
○ 2026-03-24 17:42:04
○NSuns02.lolipop.jp2015-08-08 → 2017-03-23 · 4 obs
● 2015-08-08 04:41:18
● 2017-03-23 01:32:58
○ 2026-03-13 04:14:32
○ 2026-03-24 17:42:04
●MXalt1.aspmx.l.google.com2026-03-13 → 2026-03-24 · 3 obs
○ 2017-03-23 01:32:58
● 2026-03-13 04:14:32
● 2026-03-24 17:42:04
●MXalt2.aspmx.l.google.com2026-03-13 → 2026-03-24 · 3 obs
○ 2017-03-23 01:32:58
● 2026-03-13 04:14:32
● 2026-03-24 17:42:04
●MXalt3.aspmx.l.google.com2026-03-13 → 2026-03-24 · 3 obs
○ 2017-03-23 01:32:58
● 2026-03-13 04:14:32
● 2026-03-24 17:42:04
●MXalt4.aspmx.l.google.com2026-03-13 → 2026-03-24 · 3 obs
○ 2017-03-23 01:32:58
● 2026-03-13 04:14:32
● 2026-03-24 17:42:04
●MXaspmx.l.google.com2026-03-13 → 2026-03-24 · 3 obs
○ 2017-03-23 01:32:58
● 2026-03-13 04:14:32
● 2026-03-24 17:42:04
○MXmx01.lolipop.jp2015-08-08 → 2017-03-23 · 4 obs
● 2015-08-08 04:41:18
● 2017-03-23 01:32:58
○ 2026-03-13 04:14:32
○ 2026-03-24 17:42:04
○A157.7.107.392016-04-19 → 2017-03-23 · 5 obs
○ 2016-01-04 16:22:46
● 2016-04-19 17:28:20
● 2017-03-23 01:32:58
○ 2026-03-13 04:14:32
○ 2026-03-24 17:42:04
●A162.43.105.1212026-03-13 → 2026-03-24 · 3 obs
○ 2017-03-23 01:32:58
● 2026-03-13 04:14:32
● 2026-03-24 17:42:04
○A203.189.109.1662015-08-08 → 2016-01-04 · 4 obs
● 2015-08-08 04:41:18
● 2016-01-04 16:22:46
○ 2016-04-19 17:28:20
○ 2026-03-24 17:42:04

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpe.dns.jp, f.dns.jp, g.dns.jp, a.dns.jp...-
studyup.jpns3.xbiz.ne.jp, ns1.xbiz.ne.jp, ns2.xbiz.ne.jp3 records

✅ Authoritative Response

Server:157.112.191.237

NS records: ns3.xbiz.ne.jp, ns1.xbiz.ne.jp, ns2.xbiz.ne.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for studyup.jp (unsigned zone)

⏱️ Timing

Total: 861ms | Queries: -

📄 Records

TypeCountSample Data
A1162.43.105.121
NS3ns3.xbiz.ne.jp, ns2.xbiz.ne.jp...
MX5ALT1.ASPMX.L.GOOGLE.COM (pri: 5), ALT4.ASPMX.L.GOOGLE.COM (pri: 10)...
TXT1v=spf1 +a:sv740.xbiz.ne.jp +a:studyup.jp
SOA1ns1.xbiz.ne.jp root.xbiz.ne.jp

📌 Glue Records Collected

Total: 3

Out-of-bailiwick: 3 (ns3.xbiz.ne.jp, ns2.xbiz.ne.jp, ns1.xbiz.ne.jp)

Analysis

Hierarchy

The parent of www.studyup.jp is studyup.jp.

IP Addresses

studyup.jp points to a single IP number: 162.43.105.121.

Other host names, for instance marineandwalk.jp, maytheater.jp, mx.next-energy.co.jp, www.j-dog-fes.com and sv740.xbiz.ne.jp share IP numbers with studyup.jp.

Name Servers

The domain studyup.jp is delegated to three name servers: ns1.xbiz.ne.jp, ns2.xbiz.ne.jp and ns3.xbiz.ne.jp.

studyup.jp shares name servers with other domains at least partially, for instance ec-akinai.com, jimopon.com, apk.jp, plex-web.com and a-drive.jp.

Host names with a single IP number:

ns1.xbiz.ne.jp points to 157.112.182.247.

ns2.xbiz.ne.jp points to 35.76.79.244.

ns3.xbiz.ne.jp points to 157.112.191.237.

Mail Servers

studyup.jp is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.

studyup.jp shares some mail servers with other domains, including ns500758.ns500759.ns500758.ns500759.ns500758.ns500698.ns500736.ns500735.ns500698.ns500708.ns500576.ns500708.ns500698.ns500698.ns500576.ns500619.tracksymphony.com, ns500754.ns500742.ns500671.ns500704.ns500688.ns500705.ns500671.ns500671.ns500688.ns500291.ns500291.ns500153.tenderladiesbz.com, ns500671.ns500754.ns500671.ns500688.ns500704.ns500688.ns500678.ns500678.ns500666.ns500291.ns500291.ns500131.lustychickser.com, ns500698.ns500759.ns500759.ns500758.ns500735.ns500735.ns500698.ns500576.ns500698.ns500619.ns500576.ns500619.ns500619.trackreceptor.com and ns500699.ns500699.ns500699.ns500699.ns500693.ns500693.ns500588.ns500588.ns500693.ns500693.ns500588.ns500683.ns500632.ns500588.ns500588.ns500578.ns500110.dtrkdll.com.

These mail servers are commonly used with aspmx2.googlemail.com and aspmx3.googlemail.com.

Host names with two IP numbers:

aspmx.l.google.com points to 2a00:1450:4009:c0f::1b and 108.177.15.26.

alt1.aspmx.l.google.com points to 2607:f8b0:4023:2801::1a and 192.178.128.27.

alt2.aspmx.l.google.com points to 2a00:1450:4001:c21::1a and 192.178.213.26.

alt3.aspmx.l.google.com points to 2a00:1450:4025:c01::1b and 142.251.127.26.

alt4.aspmx.l.google.com points to 2607:f8b0:4003:c4a::1b and 142.251.96.26.