jsrt.org - dns.ninja

jsrt.org

DNSSEC⚠️ Not signed
A49.212.150.161🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTRos3-292-35657.vs.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
SOAmaster.dns.ne.jptech@sakura.ad.jp 2026-06-14 #1

org

DNSSEC🔒 Signed (DS record present)
NSa0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation
NSa2.org.afilias-nst.info ⚠️ Not in parent delegation
NSb0.org.afilias-nst.org
NSb2.org.afilias-nst.org
NSc0.org.afilias-nst.info ⚠️ Not in parent delegation
NSd0.org.afilias-nst.org
SOAa0.org.afilias-nst.infohostmaster@donuts.email serial=1783944830

Same first word

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jsrt.kr

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DNS History

17 records (4 active, 13 former)

201820192020202120222023202420252026NSmaster.dns.ne.jpns1.dns.ne.jpns2.dns.ne.jpns1.linode.comns2.linode.comns3.linode.comns4.linode.comns47.domaincontrol.comns48.domaincontrol.comns5.linode.comMXmailstore1.secureserver.netsmtp.secureserver.netA49.212.150.161153.120.1.9423.239.1.1652600:3c01::f03c:91ff:fe11:279650.63.202.56
●NSmaster.dns.ne.jp2026-04-03 → 2026-07-13 · 3 obs
○ 2018-11-07 02:14:56
● 2026-04-03 13:57:50
● 2026-07-13 12:41:44
●NSns1.dns.ne.jp2026-04-03 → 2026-07-13 · 3 obs
○ 2018-11-07 02:14:56
● 2026-04-03 13:57:50
● 2026-07-13 12:41:44
○NSns1.linode.com2018-11-07 → 2018-11-07 · 4 obs
○ 2017-02-03 00:58:56
● 2018-11-07 02:14:56
○ 2026-04-03 13:57:50
○ 2026-07-13 12:41:44
●NSns2.dns.ne.jp2026-04-03 → 2026-07-13 · 3 obs
○ 2018-11-07 02:14:56
● 2026-04-03 13:57:50
● 2026-07-13 12:41:44
○NSns2.linode.com2018-11-07 → 2018-11-07 · 4 obs
○ 2017-02-03 00:58:56
● 2018-11-07 02:14:56
○ 2026-04-03 13:57:50
○ 2026-07-13 12:41:44
○NSns3.linode.com2018-11-07 → 2018-11-07 · 4 obs
○ 2017-02-03 00:58:56
● 2018-11-07 02:14:56
○ 2026-04-03 13:57:50
○ 2026-07-13 12:41:44
○NSns4.linode.com2018-11-07 → 2018-11-07 · 4 obs
○ 2017-02-03 00:58:56
● 2018-11-07 02:14:56
○ 2026-04-03 13:57:50
○ 2026-07-13 12:41:44
○NSns47.domaincontrol.com2017-02-03 → 2017-02-03 · 3 obs
● 2017-02-03 00:58:56
○ 2018-11-07 02:14:56
○ 2026-07-13 12:41:44
○NSns48.domaincontrol.com2017-02-03 → 2017-02-03 · 3 obs
● 2017-02-03 00:58:56
○ 2018-11-07 02:14:56
○ 2026-07-13 12:41:44
○NSns5.linode.com2018-11-07 → 2018-11-07 · 4 obs
○ 2017-02-03 00:58:56
● 2018-11-07 02:14:56
○ 2026-04-03 13:57:50
○ 2026-07-13 12:41:44
○MXmailstore1.secureserver.net2017-02-03 → 2017-02-03 · 3 obs
● 2017-02-03 00:58:56
○ 2018-11-07 02:14:56
○ 2026-07-13 12:41:44
○MXsmtp.secureserver.net2017-02-03 → 2017-02-03 · 3 obs
● 2017-02-03 00:58:56
○ 2018-11-07 02:14:56
○ 2026-07-13 12:41:44
○A153.120.1.942026-04-03 → 2026-06-07 · 4 obs
○ 2018-11-07 02:14:56
● 2026-04-03 13:57:50
● 2026-06-07 03:12:32
○ 2026-07-13 12:41:44
○A23.239.1.1652018-11-07 → 2018-11-07 · 4 obs
○ 2017-02-03 00:58:56
● 2018-11-07 02:14:56
○ 2026-04-03 13:57:50
○ 2026-07-13 12:41:44
○A2600:3c01::f03c:91ff:fe11:27962018-11-07 → 2018-11-07 · 4 obs
○ 2017-02-03 00:58:56
● 2018-11-07 02:14:56
○ 2026-04-03 13:57:50
○ 2026-07-13 12:41:44
●A49.212.150.1612026-07-13 → 2026-07-13 · 2 obs
○ 2026-06-07 03:12:32
● 2026-07-13 12:41:44
○A50.63.202.562017-02-03 → 2017-02-03 · 3 obs
● 2017-02-03 00:58:56
○ 2018-11-07 02:14:56
○ 2026-07-13 12:41:44

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org-
jsrt.orgns2.dns.ne.jp, ns1.dns.ne.jp-

✅ 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 jsrt.org (unsigned zone)

⏱️ Timing

Total: 1023ms | Queries: -

📄 Records

TypeCountSample Data
A149.212.150.161
NS2ns1.dns.ne.jp, ns2.dns.ne.jp
SOA1master.dns.ne.jp tech.sakura.ad.jp

Analysis

IP Addresses

jsrt.org has exactly one IP address — 49.212.150.161.

Host names like os3-292-35657.vs.sakura.ne.jp are further examples that share IP numbers with jsrt.org.

Name Servers

jsrt.org carries NS records delegating to master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.

jsrt.org partially shares its NS delegation with several other domains, including hassoudaikou.net, himuroserika.sakura.ne.jp, zennkoku.sakura.ne.jp and two others.

These name servers often co-occur with the name servers dns.sakura.ad.jp.

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 — each hostname maps to exactly one IP address.