cortex.su - dns.ninja

`cortex.su`

DNSSEC	⚠️ Not signed
A	176.57.64.51^{🇧🇦 DDOS-GUARD176.57.64.0/23}
NS	`vps-11036334-444279.host4g.ru` ⭐
NS	`ns1.rsnx.ru`
		A	89.253.252.13^{🇷🇺 RUSONYX-AS89.253.248.0/21 RUSONYX-RU}
			PTR	`ns1.rsnx.ru`
NS	`ns2.rsnx.ru`
		A	89.253.252.15^{🇷🇺 RUSONYX-AS89.253.248.0/21 RUSONYX-RU}
			PTR	`ns2.rsnx.ru`
MX	`mx.yandex.net` ⭐
		A	2a02:6b8::311^{🇷🇺 TELETECH2a02:6b8::/32 Yandex network}
			PTR	`mxfront.stable.qloud-b.yandex.net`
		A	77.88.21.249^{🇷🇺 TELETECH77.88.0.0/18 Yandex enterprise network}
			PTR	`mxfront.stable.qloud-b.yandex.net`
TXT	`v=spf1 +a +mx -all`
SOA	`vps-11036334-444279.host4g.ru`dubdeniss@yandex.ru 2024-09-04 #10

`su`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.dns.ripn.net` ⭐
	NS	`b.dns.ripn.net`
	NS	`c.tld-servers.ru` ⚠️ Not in parent delegation
	NS	`d.dns.ripn.net`
	NS	`e.dns.ripn.net`
	NS	`f.dns.ripn.net`
	SOA	`a.dns.ripn.net`hostmaster@ripn.net serial=650209990

Subdomains

mail.cortex.su

Same first word

cortex.dev

cortex.cz

cortex.mobi

cortex.art.br

cortex.graphics

cortex.si

cortex.nl

cortex.host

cortex.hu

cortex.com.au

cortex.se

cortex.bz

cortex.fi

cortex.co.il

cortex.ph

cortex.college

cortex.co.nz

cortex.inc

cortex.lv

cortex.jp

cortex.name

cortex.de

cortex.design

cortex.mx

cortex.biz

cortex.ro

cortex.awsapps.com

cortex.cn

cortex.camera

cortex.kg

cortex.computer

cortex.la

cortex.be

cortex.eu

cortex.fr

cortex.com.br

cortex.su

cortex.no

cortex.net

cortex.ru

cortex.ca

cortex.lt

cortex.ee

cortex.io

cortex.lu

cortex.ind.br

cortex.us

cortex.me

cortex.ax

cortex.online

cortex.in

cortex.to

cortex.med.br

cortex.so

cortex.com

cortex.az

cortex.tv

cortex.com.pl

cortex.ch

cortex.ws

Similar names

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

croxet.com

certox.com

roxtec.be

roctex.com

coretx.net

roxtec.us

roxtec.nu

torcex.com

roxtec.com.au

txreco.com

ecotrx.com

roxtec.ir

roxtec.fr

roxtec.ua

roxtec.pl

roxtec.dk

roxtec.fi

certox.de

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

DNS History

9 records (5 active, 4 former)

●NSns1.rsnx.ru2026-03-24 → 2026-07-27 · 3 obs

○ 2016-04-08 20:16:40
● 2026-03-24 19:15:04
● 2026-07-27 15:17:18

○NSns1.rusonyx.ru2015-05-18 → 2016-04-08 · 4 obs

● 2015-05-18 16:49:20
● 2016-04-08 20:16:40
○ 2026-03-24 19:15:04
○ 2026-07-27 15:17:18

●NSns2.rsnx.ru2026-03-24 → 2026-07-27 · 3 obs

○ 2016-04-08 20:16:40
● 2026-03-24 19:15:04
● 2026-07-27 15:17:18

○NSns2.rusonyx.ru2015-05-18 → 2016-04-08 · 4 obs

● 2015-05-18 16:49:20
● 2016-04-08 20:16:40
○ 2026-03-24 19:15:04
○ 2026-07-27 15:17:18

●NSvps-11036334-444279.host4g.ru2026-03-24 → 2026-07-27 · 3 obs

○ 2016-04-08 20:16:40
● 2026-03-24 19:15:04
● 2026-07-27 15:17:18

○MXmail.cortex.su2015-05-18 → 2016-04-08 · 4 obs

● 2015-05-18 16:49:20
● 2016-04-08 20:16:40
○ 2026-03-24 19:15:04
○ 2026-07-27 15:17:18

●MXmx.yandex.net2026-03-24 → 2026-07-27 · 3 obs

○ 2016-04-08 20:16:40
● 2026-03-24 19:15:04
● 2026-07-27 15:17:18

●A176.57.64.512026-03-24 → 2026-07-27 · 3 obs

○ 2016-04-08 20:16:40
● 2026-03-24 19:15:04
● 2026-07-27 15:17:18

○A89.253.247.222015-05-18 → 2016-04-08 · 4 obs

● 2015-05-18 16:49:20
● 2016-04-08 20:16:40
○ 2026-03-24 19:15:04
○ 2026-07-27 15:17:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
su	b.dns.ripn.net, a.dns.ripn.net, e.dns.ripn.net, d.dns.ripn.net...	10 records
cortex.su	ns1.rsnx.ru, ns2.rsnx.ru	-

✅ Authoritative Response

Server:89.253.252.13

NS records: ns1.rsnx.ru, ns2.rsnx.ru

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cortex.su (unsigned zone)

⏱️ Timing

Total: 1526ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`176.57.64.51`
NS	2	`ns1.rsnx.ru, ns2.rsnx.ru`
MX	1	`mx.yandex.net (pri: 10)`
TXT	1	`v=spf1 +a +mx -all`
SOA	1	`vps-11036334-444279.host4g.ru dubdeniss.`

📌 Glue Records Collected

Total: 10

Out-of-bailiwick: 10 (f.dns.ripn.net, e.dns.ripn.net, d.dns.ripn.net...)

Analysis

Hierarchy

mail.cortex.su is a subdomain of cortex.su.

IP Addresses

cortex.su has exactly one IP address — 176.57.64.51.

l-ps.ru, elstd.ru, nevskiemastera.ru plus two other host names have IP numbers in common with cortex.su.

Name Servers

cortex.su carries NS records delegating to vps-11036334-444279.host4g.ru, ns1.rsnx.ru and ns2.rsnx.ru.

The name servers of cortex.su overlap at least partially with those of other domains — among them ikstudio.ru, rakurs.ru, filmgear.ru and two more.

These name servers commonly appear in delegations together with dns1.zenon.net, dns2.zenon.net, sni2.rusonyx.ru and 7 other.

Both ns1.rsnx.ru and ns2.rsnx.ru have a single IP address each — ns1.rsnx.ru resolves to 89.253.252.13 while ns2.rsnx.ru resolves to 89.253.252.15.

Mail Servers

cortex.su uses one mail server — mx.yandex.net.

The mail server setup of cortex.su matches that of other domains such as cigarday.ru, yeditepesaglik.com.tr, hz.com.vn and two others.

At least some of the mail servers used by cortex.su are shared with other domains: sense.com.tr, rusremont-kvartir.ru, krc-briz.ru and two others among them.

mx.yandex.net resolves to two IP numbers — 77.88.21.249 and 2a02:6b8::311.