kokokusha.jp - robtex.com

kokokusha.jp

DNSSEC⚠️ Not signed
A49.212.207.75🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTRwww3065.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
MXkokokusha.jp ⭐
A49.212.207.75🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTRwww3065.sakura.ne.jp
TXTv=spf1 a:www3065.sakura.ne.jp mx ~all
TXTgoogle-site-verification=kAGbfAxalPpKtmlaW40pmRkEtD7ZR33uMthyRAeF_oE
SOAmaster.dns.ne.jptech@sakura.ad.jp 2025-10-03 #1

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=1778821203

MX for

kokokusha.jp

Same first word

kokokusha.co.jp
kokokusha.jp
kokokusha.net

DNS History

14 records (5 active, 9 former)

20162017201820192020202120222023202420252026NSmaster.dns.ne.jpns1.dns.ne.jpns2.dns.ne.jpns-1065.awsdns-05.orgns-1643.awsdns-13.co.ukns-318.awsdns-39.comns-815.awsdns-37.netns0.kokokusha.co.jpns2.kokokusha.co.jpMXkokokusha.jpmail.kokokusha.jpA49.212.207.75119.245.149.163140.227.100.138
●NSmaster.dns.ne.jp2026-04-21 → 2026-05-15 · 3 obs
○ 2020-03-08 23:19:58
● 2026-04-21 00:12:18
● 2026-05-15 05:32:26
○NSns-1065.awsdns-05.org2020-03-08 → 2020-03-08 · 4 obs
○ 2017-04-02 06:32:02
● 2020-03-08 23:19:58
○ 2026-04-21 00:12:18
○ 2026-05-15 05:32:26
○NSns-1643.awsdns-13.co.uk2020-03-08 → 2020-03-08 · 4 obs
○ 2017-04-02 06:32:02
● 2020-03-08 23:19:58
○ 2026-04-21 00:12:18
○ 2026-05-15 05:32:26
○NSns-318.awsdns-39.com2020-03-08 → 2020-03-08 · 4 obs
○ 2017-04-02 06:32:02
● 2020-03-08 23:19:58
○ 2026-04-21 00:12:18
○ 2026-05-15 05:32:26
○NSns-815.awsdns-37.net2020-03-08 → 2020-03-08 · 4 obs
○ 2017-04-02 06:32:02
● 2020-03-08 23:19:58
○ 2026-04-21 00:12:18
○ 2026-05-15 05:32:26
○NSns0.kokokusha.co.jp2015-05-27 → 2017-04-02 · 4 obs
● 2015-05-27 20:54:52
● 2017-04-02 06:32:02
○ 2020-03-08 23:19:58
○ 2026-05-15 05:32:26
●NSns1.dns.ne.jp2026-04-21 → 2026-05-15 · 3 obs
○ 2020-03-08 23:19:58
● 2026-04-21 00:12:18
● 2026-05-15 05:32:26
●NSns2.dns.ne.jp2026-04-21 → 2026-05-15 · 3 obs
○ 2020-03-08 23:19:58
● 2026-04-21 00:12:18
● 2026-05-15 05:32:26
○NSns2.kokokusha.co.jp2016-09-11 → 2017-04-02 · 5 obs
○ 2015-05-27 20:54:52
● 2016-09-11 01:28:06
● 2017-04-02 06:32:02
○ 2020-03-08 23:19:58
○ 2026-05-15 05:32:26
●MXkokokusha.jp2026-04-21 → 2026-05-15 · 3 obs
○ 2020-03-08 23:19:58
● 2026-04-21 00:12:18
● 2026-05-15 05:32:26
○MXmail.kokokusha.jp2015-05-27 → 2017-04-02 · 4 obs
● 2015-05-27 20:54:52
● 2017-04-02 06:32:02
○ 2020-03-08 23:19:58
○ 2026-05-15 05:32:26
○A119.245.149.1632015-05-27 → 2017-04-02 · 4 obs
● 2015-05-27 20:54:52
● 2017-04-02 06:32:02
○ 2020-03-08 23:19:58
○ 2026-05-15 05:32:26
○A140.227.100.1382020-03-08 → 2020-03-08 · 4 obs
○ 2017-04-02 06:32:02
● 2020-03-08 23:19:58
○ 2026-04-21 00:12:18
○ 2026-05-15 05:32:26
●A49.212.207.752026-04-21 → 2026-05-15 · 3 obs
○ 2020-03-08 23:19:58
● 2026-04-21 00:12:18
● 2026-05-15 05:32:26

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpa.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...-
kokokusha.jpns1.dns.ne.jp, ns2.dns.ne.jp2 records

✅ Authoritative Response

Server:133.167.21.1

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for kokokusha.jp (unsigned zone)

⏱️ Timing

Total: 1011ms | Queries: -

📄 Records

TypeCountSample Data
A149.212.207.75
NS2ns1.dns.ne.jp, ns2.dns.ne.jp
MX1kokokusha.jp (pri: 10)
TXT2v=spf1 a:www3065.sakura.ne.jp mx ~all, google-site-verification=kAGbfAxalPpKtml
SOA1master.dns.ne.jp tech.sakura.ad.jp

📌 Glue Records Collected

Total: 2

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

Analysis

Mail Server Role

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

IP Addresses

kokokusha.jp points to IP number 49.212.207.75.

For instance, other host names siegmitsmx.sakura.ne.jp, f-literacy.sakura.ne.jp, tadao3d.com, keiko-1013.sakura.ne.jp and crepis000.sakura.ne.jp share IP numbers with kokokusha.jp.

Name Servers

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

kokokusha.jp shares name servers with other domains at least partially, for example souseikai.sakura.ne.jp, bizinfo.co.jp, msv-im05932.sakura.ne.jp, satobriand.com and brilliantport.sakura.ne.jp.

Host names with a single IP address: 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

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

kokokusha.jp points to a single IP: 49.212.207.75.