kato-lab.org - robtex.com

kato-lab.org

DNSSEC⚠️ Not signed
A133.242.249.186🇯🇵 SAKURA-A133.242.0.0/16 (1/ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan
PTRwww4246.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
MXkato-lab.org ⭐
A133.242.249.186🇯🇵 SAKURA-A133.242.0.0/16 (1/ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan
PTRwww4246.sakura.ne.jp
TXTv=spf1 a:www4246.sakura.ne.jp mx ~all
SOAmaster.dns.ne.jptech@sakura.ad.jp 2024-05-20 #16

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=1785129690

MX for

kato-lab.org

Same first word

kato-lab.org
kato-lab.jp
kato-lab.com

Similar names

labo-tak.com
al-katob.com

DNS History

18 records (5 active, 13 former)

20162017201820192020202120222023202420252026NSmaster.dns.ne.jpns1.dns.ne.jpns2.dns.ne.jpns15.domaincontrol.comns16.domaincontrol.comMXkato-lab.orgalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comaspmx4.googlemail.comaspmx5.googlemail.comA133.242.249.186216.239.32.21216.239.34.21216.239.36.21216.239.38.21
●NSmaster.dns.ne.jp2026-07-08 → 2026-07-27 · 3 obs
○ 2016-12-31 14:13:12
● 2026-07-08 11:35:34
● 2026-07-27 06:03:58
●NSns1.dns.ne.jp2026-07-08 → 2026-07-27 · 3 obs
○ 2016-12-31 14:13:12
● 2026-07-08 11:35:34
● 2026-07-27 06:03:58
○NSns15.domaincontrol.com2015-06-01 → 2016-12-31 · 4 obs
● 2015-06-01 03:37:14
● 2016-12-31 14:13:12
○ 2026-07-08 11:35:34
○ 2026-07-27 06:03:58
○NSns16.domaincontrol.com2015-06-01 → 2016-12-31 · 4 obs
● 2015-06-01 03:37:14
● 2016-12-31 14:13:12
○ 2026-07-08 11:35:34
○ 2026-07-27 06:03:58
●NSns2.dns.ne.jp2026-07-08 → 2026-07-27 · 3 obs
○ 2016-12-31 14:13:12
● 2026-07-08 11:35:34
● 2026-07-27 06:03:58
○MXalt1.aspmx.l.google.com2015-06-01 → 2016-12-31 · 4 obs
● 2015-06-01 03:37:14
● 2016-12-31 14:13:12
○ 2026-07-08 11:35:34
○ 2026-07-27 06:03:58
○MXalt2.aspmx.l.google.com2015-06-01 → 2016-12-31 · 4 obs
● 2015-06-01 03:37:14
● 2016-12-31 14:13:12
○ 2026-07-08 11:35:34
○ 2026-07-27 06:03:58
○MXaspmx.l.google.com2015-06-01 → 2016-12-31 · 4 obs
● 2015-06-01 03:37:14
● 2016-12-31 14:13:12
○ 2026-07-08 11:35:34
○ 2026-07-27 06:03:58
○MXaspmx2.googlemail.com2015-06-01 → 2016-12-31 · 4 obs
● 2015-06-01 03:37:14
● 2016-12-31 14:13:12
○ 2026-07-08 11:35:34
○ 2026-07-27 06:03:58
○MXaspmx3.googlemail.com2015-06-01 → 2016-12-31 · 4 obs
● 2015-06-01 03:37:14
● 2016-12-31 14:13:12
○ 2026-07-08 11:35:34
○ 2026-07-27 06:03:58
○MXaspmx4.googlemail.com2015-06-01 → 2016-12-31 · 4 obs
● 2015-06-01 03:37:14
● 2016-12-31 14:13:12
○ 2026-07-08 11:35:34
○ 2026-07-27 06:03:58
○MXaspmx5.googlemail.com2015-06-01 → 2016-12-31 · 4 obs
● 2015-06-01 03:37:14
● 2016-12-31 14:13:12
○ 2026-07-08 11:35:34
○ 2026-07-27 06:03:58
●MXkato-lab.org2026-07-08 → 2026-07-27 · 3 obs
○ 2016-12-31 14:13:12
● 2026-07-08 11:35:34
● 2026-07-27 06:03:58
●A133.242.249.1862026-07-08 → 2026-07-27 · 3 obs
○ 2016-12-31 14:13:12
● 2026-07-08 11:35:34
● 2026-07-27 06:03:58
○A216.239.32.212015-06-01 → 2016-12-31 · 4 obs
● 2015-06-01 03:37:14
● 2016-12-31 14:13:12
○ 2026-07-08 11:35:34
○ 2026-07-27 06:03:58
○A216.239.34.212015-06-01 → 2016-12-31 · 4 obs
● 2015-06-01 03:37:14
● 2016-12-31 14:13:12
○ 2026-07-08 11:35:34
○ 2026-07-27 06:03:58
○A216.239.36.212015-06-01 → 2016-12-31 · 4 obs
● 2015-06-01 03:37:14
● 2016-12-31 14:13:12
○ 2026-07-08 11:35:34
○ 2026-07-27 06:03:58
○A216.239.38.212015-06-01 → 2016-12-31 · 4 obs
● 2015-06-01 03:37:14
● 2016-12-31 14:13:12
○ 2026-07-08 11:35:34
○ 2026-07-27 06:03:58

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org-
kato-lab.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 kato-lab.org (unsigned zone)

⏱️ Timing

Total: 931ms | Queries: -

📄 Records

TypeCountSample Data
A1133.242.249.186
NS2ns1.dns.ne.jp, ns2.dns.ne.jp
MX1kato-lab.org (pri: 10)
TXT1v=spf1 a:www4246.sakura.ne.jp mx ~all
SOA1master.dns.ne.jp tech.sakura.ad.jp

Analysis

Mail Server Role

kato-lab.org is listed as a mail server for itself.

IP Addresses

kato-lab.org resolves to one IP address: 133.242.249.186.

v1spa.com, vsha.jp, wacsw.com and two other host names share IP numbers with kato-lab.org.

Name Servers

The authoritative name servers for kato-lab.org are master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp — three in total.

kato-lab.org has at least partial name server overlap with other domains, such as shizuokatekko.co.jp, hinome-app.com, 1104k.sakura.ne.jp and two others.

It is common to find these name servers paired with the name servers dns.sakura.ad.jp.

The hostnames master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp each resolve to a single IP: master.dns.ne.jp → 210.224.172.18, ns1.dns.ne.jp → 61.211.236.1, ns2.dns.ne.jp → 133.167.21.1.

Mail Servers

Mail for kato-lab.org is handled by one mail server — kato-lab.org.

kato-lab.org directs to just one IP number, 133.242.249.186.