fourjack.jp - robtex.com

fourjack.jp

DNSSEC⚠️ Not signed
A161.34.17.145🇯🇵 InfoSphere161.34.0.0/16 INFOSPHERE
PTRfourjack.jp
NSns3.sphere.ad.jp ⭐
A202.239.113.22🇯🇵 InfoSphere202.239.64.0/18 INFOSPHERE
PTRns3.sphere.ad.jp
NSns4.sphere.ad.jp
A202.239.113.30🇯🇵 InfoSphere202.239.64.0/18 INFOSPHERE
PTRns4.sphere.ad.jp
MXfourjack.jp ⭐
A161.34.17.145🇯🇵 InfoSphere161.34.0.0/16 INFOSPHERE
PTRfourjack.jp
TXTv=spf1 include:fmx.etius.jp +ip4:161.34.17.2/32 +ip4:161.34.17.145/32 -all
SOAns3.sphere.ad.jpdns@sphere.ad.jp serial=1573005021

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=1784823302

PTR for

145.17.34.161.in-addr.arpa

MX for

fourjack.jp

Same first word

fourjack.jp

DNS History

8 records (4 active, 4 former)

20162017201820192020202120222023202420252026NSns3.sphere.ad.jpns4.sphere.ad.jpasns1.customer.ne.jpasns2.customer.ne.jpMXfourjack.jpA161.34.17.145101.110.181.160.43.221.10
○NSasns1.customer.ne.jp2015-05-07 → 2017-03-31 · 4 obs
● 2015-05-07 22:50:10
● 2017-03-31 14:13:38
○ 2026-03-11 10:11:32
○ 2026-07-23 16:58:12
○NSasns2.customer.ne.jp2015-05-07 → 2017-03-31 · 4 obs
● 2015-05-07 22:50:10
● 2017-03-31 14:13:38
○ 2026-03-11 10:11:32
○ 2026-07-23 16:58:12
●NSns3.sphere.ad.jp2026-03-11 → 2026-07-23 · 3 obs
○ 2017-03-31 14:13:38
● 2026-03-11 10:11:32
● 2026-07-23 16:58:12
●NSns4.sphere.ad.jp2026-03-11 → 2026-07-23 · 3 obs
○ 2017-03-31 14:13:38
● 2026-03-11 10:11:32
● 2026-07-23 16:58:12
●MXfourjack.jp2015-05-07 → 2026-07-23 · 2 obs
● 2015-05-07 22:50:10
● 2026-07-23 16:58:12
○A101.110.181.12015-05-07 → 2015-05-07 · 3 obs
● 2015-05-07 22:50:10
○ 2015-10-16 18:28:16
○ 2026-07-23 16:58:12
●A161.34.17.1452026-03-11 → 2026-07-23 · 3 obs
○ 2017-03-31 14:13:38
● 2026-03-11 10:11:32
● 2026-07-23 16:58:12
○A60.43.221.102015-10-16 → 2017-03-31 · 5 obs
○ 2015-05-07 22:50:10
● 2015-10-16 18:28:16
● 2017-03-31 14:13:38
○ 2026-03-11 10:11:32
○ 2026-07-23 16:58:12

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpa.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...-
fourjack.jpns4.sphere.ad.jp, ns3.sphere.ad.jp-

✅ Authoritative Response

Server:202.239.113.30

NS records: ns4.sphere.ad.jp, ns3.sphere.ad.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for fourjack.jp (unsigned zone)

⏱️ Timing

Total: 2779ms | Queries: -

📄 Records

TypeCountSample Data
A1161.34.17.145
NS2ns3.sphere.ad.jp, ns4.sphere.ad.jp
MX1fourjack.jp (pri: 10)
TXT1v=spf1 include:fmx.etius.jp +ip4:161.34.
SOA1ns3.sphere.ad.jp dns.sphere.ad.jp

Analysis

Mail Server Role

fourjack.jp handles its own mail, functioning as its own mail server.

IP Addresses

fourjack.jp resolves to just one IP address, 161.34.17.145.

Name Servers

Two name servers handle the delegation for fourjack.jp: ns3.sphere.ad.jp and ns4.sphere.ad.jp.

fourjack.jp shares its NS records with other domains, for example maomida.com, 163.212.202.in-addr.arpa, m-auto.jp and two others.

fourjack.jp and other domains like kenchiku-cpd.jp, jstp.or.jp and eload.jp share some name servers

ns3.sphere.ad.jp and ns4.sphere.ad.jp each resolve to one IP number: ns3.sphere.ad.jp points to 202.239.113.22 and ns4.sphere.ad.jp points to 202.239.113.30.

Mail Servers

fourjack.jp is served by just one mail server: fourjack.jp.

fourjack.jp carries a single IP number, which is 161.34.17.145.