openacademy.jp - robtex.com

openacademy.jp

DNSSEC⚠️ Not signed
A202.181.97.40🇯🇵 SAKURA-B202.181.96.0/20 (6/TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTRwww230.sakura.ne.jp
NSmaster.dns.ne.jp ⭐
A210.224.172.18🇯🇵 SAKURA-C210.224.160.0/19 (1/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTRmaster.dns.ne.jp
NSns1.dns.ne.jp
A61.211.236.1🇯🇵 SAKURA-B61.211.236.0/24 (4/TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTRns1.dns.ne.jp
NSns2.dns.ne.jp
A133.167.21.1🇯🇵 SAKURA-C133.167.21.0/24 (OSAKA) SAKURA Internet // WEST JAPAN BACKBONE Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka, Osaka 530-0011, Japan
PTRns2.dns.ne.jp
MXopenacademy.jp ⭐
A202.181.97.40🇯🇵 SAKURA-B202.181.96.0/20 (6/TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTRwww230.sakura.ne.jp
SOAmaster.dns.ne.jptech@sakura.ad.jp 2012-10-16 #17

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=1774426502

MX for

openacademy.jp

Same first word

openacademy.es
openacademy.org
openacademy.cl
openacademy.jp
openacademy.net

DNS History

5 records (5 active, 0 former)

20162017201820192020202120222023202420252026NSmaster.dns.ne.jpns1.dns.ne.jpns2.dns.ne.jpMXopenacademy.jpA202.181.97.40
●NSmaster.dns.ne.jp2015-05-03 → 2026-03-25 · 2 obs
● 2015-05-03 22:36:50
● 2026-03-25 08:44:50
●NSns1.dns.ne.jp2015-05-03 → 2026-03-25 · 2 obs
● 2015-05-03 22:36:50
● 2026-03-25 08:44:50
●NSns2.dns.ne.jp2015-05-03 → 2026-03-25 · 2 obs
● 2015-05-03 22:36:50
● 2026-03-25 08:44:50
●MXopenacademy.jp2015-05-03 → 2026-03-25 · 2 obs
● 2015-05-03 22:36:50
● 2026-03-25 08:44:50
●A202.181.97.402015-05-03 → 2026-03-25 · 2 obs
● 2015-05-03 22:36:50
● 2026-03-25 08:44:50

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpd.dns.jp, c.dns.jp, a.dns.jp, b.dns.jp...-
openacademy.jpns2.dns.ne.jp, ns1.dns.ne.jp2 records

✅ Authoritative Response

Server:133.167.21.1

NS records: ns2.dns.ne.jp, ns1.dns.ne.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for openacademy.jp (unsigned zone)

⏱️ Timing

Total: 637ms | Queries: -

📄 Records

TypeCountSample Data
A1202.181.97.40
NS2ns1.dns.ne.jp, ns2.dns.ne.jp
MX1openacademy.jp (pri: 10)
SOA1master.dns.ne.jp tech.sakura.ad.jp

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns2.dns.ne.jp, ns1.dns.ne.jp)

Analysis

Mail Server Role

openacademy.jp serves as the mail server for openacademy.jp.

IP Addresses

openacademy.jp points to a single IP number: 202.181.97.40.

Other host names, for instance bbs.tefutefu-crane.jp, tomsballoon.com, amitir.jp, houwomanabukai.org and bellegarmo.com share IP numbers with openacademy.jp.

Name Servers

The delegation for openacademy.jp is handled by three name servers: master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.

openacademy.jp at least partially shares name servers with other domains, for instance zensyuchu-skillupblog.com, kagusize.com, farman-u.com, coread.jp and relife-d.com.

Host names with one IP number:

master.dns.ne.jp points to 210.224.172.18.

ns1.dns.ne.jp points to 61.211.236.1.

ns2.dns.ne.jp points to 133.167.21.1.

Mail Servers

A single mail server handles openacademy.jp.

openacademy.jp points to a single IP: 202.181.97.40.