cortex.jp - robtex.com

cortex.jp

DNSSEC⚠️ Not signed
A124.100.158.184🇯🇵 OCN124.96.0.0/13 (AS4713) CIDR BLOCK 79 NTT Communications Corporation 1-1-6 Uchisaiwai-cho, Chiyoda-ku Tokyo 100-8019 JAPAN
PTRp4357184-ipxg00q01tokaisakaetozai.aichi.ocn.ne.jp
NSns1.value-domain.com ⭐
A172.64.52.38🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
A172.64.52.161🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
NSns2.value-domain.com
A172.64.53.3🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
A172.64.53.115🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
NSns3.value-domain.com ⚠️ Not in zone NS records
A172.64.52.38🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
A172.64.52.161🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
NSns4.value-domain.com ⚠️ Not in zone NS records
A172.64.53.3🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
A172.64.53.115🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
NSns5.value-domain.com ⚠️ Not in zone NS records
A172.64.52.38🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
A172.64.52.161🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
SOAns1.value-domain.comhostmaster@cortex.jp 2025-07-01 #16

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=1776981603

Same first word

cortex.cn
cortex.camera
cortex.kg
cortex.computer
cortex.la
cortex.eu
cortex.fr
cortex.com.br
cortex.su
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cortex.net
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cortex.inc
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cortex.jp
cortex.de
cortex.design
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cortex.ro
cortex.awsapps.com

Similar names

roxtec.sg
roxtec.it
trexco.eu
xtcore.wiki
cretox.com
crotex.com
crotex.de
cetrox.com.br
roxtec.ro
roxtec.co.nz
excort.net
roxtec.com.tr
corext.com.es
excort.de
crotex.net
roxtec.pt
trexoc.com
roxtec.kz
crotex.eu
txcore.com
roxtec.co.za
roxtec.nl
xetroc.com
roxtec.org
corext.blob.core.windows.net
roxtec.de
txcore.net
cotrex.de
roxtec.no
roxtec.co
xector.net
roxtec.com.sg
roxtec.hu
excort.com
trexco.com
roxtec.com.br
roxtec.net
roxtec.es
roxtec.se
roxtec.mx
roxtec.ch
corext.com
roxtec.ru
roxtec.lt
roxtec.in
trexco.co.in
rectox.com
xortec.fi
roxtec.com
trexco.in
roxtec.cl
trexco.net
roxtec.sk
roxtec.co.il
roxtec.co.uk
xtcore.com
roxtec.cz
roxtec.be

DNS History

11 records (6 active, 5 former)

20162017201820192020202120222023202420252026NSns1.value-domain.comns2.value-domain.comns3.value-domain.comns4.value-domain.comns5.value-domain.comMXcortex.sakura.ne.jptakatronix.sakura.ne.jpA124.100.158.184122.16.145.43157.7.125.249221.185.67.149
●NSns1.value-domain.com2015-08-13 → 2026-04-23 · 2 obs
● 2015-08-13 12:15:52
● 2026-04-23 22:32:26
●NSns2.value-domain.com2015-08-13 → 2026-04-23 · 2 obs
● 2015-08-13 12:15:52
● 2026-04-23 22:32:26
●NSns3.value-domain.com2026-03-23 → 2026-04-23 · 3 obs
○ 2015-08-13 12:15:52
● 2026-03-23 22:23:16
● 2026-04-23 22:32:26
●NSns4.value-domain.com2026-03-23 → 2026-04-23 · 3 obs
○ 2015-08-13 12:15:52
● 2026-03-23 22:23:16
● 2026-04-23 22:32:26
●NSns5.value-domain.com2026-03-23 → 2026-04-23 · 3 obs
○ 2015-08-13 12:15:52
● 2026-03-23 22:23:16
● 2026-04-23 22:32:26
○MXcortex.sakura.ne.jp2020-02-18 → 2020-02-18 · 4 obs
○ 2017-01-31 06:41:42
● 2020-02-18 14:36:50
○ 2026-03-23 22:23:16
○ 2026-04-23 22:32:26
○MXtakatronix.sakura.ne.jp2015-08-13 → 2017-01-31 · 4 obs
● 2015-08-13 12:15:52
● 2017-01-31 06:41:42
○ 2020-02-18 14:36:50
○ 2026-04-23 22:32:26
○A122.16.145.432026-03-23 → 2026-04-23 · 2 obs
○ 2026-03-23 22:23:16
○ 2026-04-23 22:32:26
●A124.100.158.1842026-03-23 → 2026-04-23 · 3 obs
○ 2020-02-18 14:36:50
● 2026-03-23 22:23:16
● 2026-04-23 22:32:26
○A157.7.125.2492015-08-13 → 2017-01-31 · 4 obs
● 2015-08-13 12:15:52
● 2017-01-31 06:41:42
○ 2020-02-18 14:36:50
○ 2026-04-23 22:32:26
○A221.185.67.1492020-02-18 → 2020-02-18 · 4 obs
○ 2017-01-31 06:41:42
● 2020-02-18 14:36:50
○ 2026-03-23 22:23:16
○ 2026-04-23 22:32:26

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpa.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...-
cortex.jpns1.value-domain.com, ns3.value-domain.com, ns2.value-domain.com, ns5.value-domain.com...-

✅ Authoritative Response

Server:172.64.52.38

NS records: ns1.value-domain.com, ns3.value-domain.com, ns2.value-domain.com, ns5.value-domain.com, ns4.value-domain.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cortex.jp (unsigned zone)

⏱️ Timing

Total: 1109ms | Queries: -

📄 Records

TypeCountSample Data
A1124.100.158.184
NS2ns2.value-domain.com, ns1.value-domain.com
SOA1ns1.value-domain.com hostmaster.cortex.j

Analysis

IP Addresses

cortex.jp points to a single IP address: 124.100.158.184.

Name Servers

cortex.jp is delegated to five name servers: ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com, ns4.value-domain.com and ns5.value-domain.com.

At least part of the name servers for cortex.jp are shared with other domains, for instance shiriko.jp, sipo.jp, shirai.be, o2navi.com and one-group.biz.

These name servers are often used together with ns11.value-domain.com, ns12.value-domain.com and ns13.value-domain.com.

Host names with two IP numbers:

The host name ns1.value-domain.com points to: 172.64.52.38 and 172.64.52.161.

The host name ns2.value-domain.com points to: 172.64.53.3 and 172.64.53.115.

The host name ns3.value-domain.com points to: 172.64.52.38 and 172.64.52.161.

The host name ns4.value-domain.com points to: 172.64.53.3 and 172.64.53.115.

The host name ns5.value-domain.com points to: 172.64.52.38 and 172.64.52.161.

Host names that point to 172.64.52.38: ns1.value-domain.com, ns3.value-domain.com and ns5.value-domain.com.

Host names that point to 172.64.52.161: ns1.value-domain.com, ns3.value-domain.com and ns5.value-domain.com.

Host names that point to 172.64.53.3: ns2.value-domain.com and ns4.value-domain.com.

Host names that point to 172.64.53.115: ns2.value-domain.com and ns4.value-domain.com.