`cort.co`

DNSSEC	⚠️ Not signed
A	54.203.228.38^{🇺🇸 Amazon54.202.0.0/15 EC2 PDX prefix}
		PTR	`ec2-54-203-228-38.us-west-2.compute.amazonaws.com`
NS	`pdns1.registrar-servers.com` ⭐
		A	2610:a1:1024::100^{🇺🇸 MAINT-ID-120082610:a1:1024::/48 Neustar}
		A	156.154.132.100^{🇺🇸 MAINT-ID-12008156.154.132.0/24 Neustar}
NS	`pdns2.registrar-servers.com`
		A	2610:a1:1025::100^{🇺🇸 MAINT-ID-120082610:a1:1025::/48 Neustar}
		A	156.154.133.100^{🇺🇸 MAINT-ID-12008156.154.133.0/24 Neustar}
MX	`mail.protonmail.ch` ⭐
		A	176.119.200.128^{🇨🇭 Proton176.119.200.0/24}
			PTR	`mail.protonmail.ch`
		A	185.70.42.128^{🇨🇭 Proton185.70.42.0/24}
			PTR	`mail.protonmail.ch`
		A	185.205.70.128^{🇫🇷 Proton185.205.70.0/24}
			PTR	`mail.protonmail.ch`
MX	`mailsec.protonmail.ch`⁽²⁰⁾
		A	176.119.200.129^{🇨🇭 Proton176.119.200.0/24}
			PTR	`mailsec.protonmail.ch`
		A	185.70.42.129^{🇨🇭 Proton185.70.42.0/24}
			PTR	`mailsec.protonmail.ch`
		A	185.205.70.129^{🇫🇷 Proton185.205.70.0/24}
			PTR	`mailsec.protonmail.ch`
TXT	`v=spf1 include:_spf.protonmail.ch ~all`
TXT	`protonmail-verification=6ccc198e69a22cafe3d2e789b864d60b8d57c14a`
SOA	`pdns1.registrar-servers.com`hostmaster@registrar-servers.com serial=1771092498

`co`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns0.centralnic.net` ⭐
	NS	`a.registrydns.co`
	NS	`b.registrydns.co`
	NS	`c.registrydns.co`
	NS	`d.registrydns.co`
	SOA	`ns0.centralnic.net`hostmaster@centralnic.net serial=1759621893

Previously MX for

cort.co

Subdomains

www.cort.co

Same first word

cort.net

cort.es

cort.co

cort.nl

cort.dk

cort.de

cort.info

cort.jp

cort.com

cort.it

cort.org.nz

cort.ch

cort.tech

cort.co.kr

cort.cn

cort.as

cort.org

cort.se

cort.ru

cort.ca

cort.co.uk

cort.cz

cort.guru

cort.eu

cort.at

cort.fr

Similar names

roct.de

ctro.co

tcor.it

torc.in

rcto.cn

roct.org

torc.dev

ctor.ch

ortc.net

torc.com.br

troc.it

troc.ch

troc.se

crot.xyz

torc.co

rcot.cn

torc.de

crto.pro

troc.es

rtoc.org

crot.in

tcro.org

tcor.us

torc.info

roct.com.au

torc.co.in

crto.ch

rtoc.de

rotc.ca

rcot.ru

rotc.life

rtco.com

troc.co.uk

rcot.us

roct.com

roct.eu

cotr.info

ocrt.gc.ca

rcto.org

ctor.eu

torc.ai

cotr.in

rcot.com

ctor.com.ua

troc.cn

rcot.net

cotr.pt

trco.com.au

tocr.com

rotc.com

ctro.com.br

otrc.de

ctro.net

rtco.nl

ortc.tv

rcot.info

cotr.tv

tcor.ca

troc.ru

torc.k12.nm.us

tcor.net

ctor.co.uk

crot.us

torc.tech

torc.ru

rotc.or.kr

trco.my

tcor.com

torc.co.th

rcto.com

rotc.nl

torc.jp

tcor.de

trco.jp

crot.net

ctor.org

ocrt.ru

ctro.ca

troc.ca

troc.me

cotr.life

ctro.de

rcot.org.rw

rotc.cn

torc.com.au

ctor.clinic

ortc.cc

crot.org

cotr.me

DNS History

18 records (5 active, 13 former)

○NSns1.websiteserverbox.com2015-11-09 → 2018-03-01 · 4 obs

● 2015-11-09 06:21:10
● 2018-03-01 06:42:10
○ 2026-03-27 13:19:30
○ 2026-03-30 13:35:04

○NSns2.websiteserverbox.com2015-11-09 → 2018-03-01 · 4 obs

● 2015-11-09 06:21:10
● 2018-03-01 06:42:10
○ 2026-03-27 13:19:30
○ 2026-03-30 13:35:04

○NSns3.websiteserverbox.com2015-11-09 → 2018-03-01 · 4 obs

● 2015-11-09 06:21:10
● 2018-03-01 06:42:10
○ 2026-03-27 13:19:30
○ 2026-03-30 13:35:04

●NSpdns1.registrar-servers.com2026-03-27 → 2026-03-30 · 3 obs

○ 2018-03-01 06:42:10
● 2026-03-27 13:19:30
● 2026-03-30 13:35:04

●NSpdns2.registrar-servers.com2026-03-27 → 2026-03-30 · 3 obs

○ 2018-03-01 06:42:10
● 2026-03-27 13:19:30
● 2026-03-30 13:35:04

○MXalt1.aspmx.l.google.com2017-06-06 → 2017-09-14 · 5 obs

○ 2017-03-05 13:42:28
● 2017-06-06 09:39:58
● 2017-09-14 13:11:58
○ 2018-03-01 06:42:10
○ 2026-03-30 13:35:04

○MXalt2.aspmx.l.google.com2017-06-06 → 2017-09-14 · 5 obs

○ 2017-03-05 13:42:28
● 2017-06-06 09:39:58
● 2017-09-14 13:11:58
○ 2018-03-01 06:42:10
○ 2026-03-30 13:35:04

○MXalt3.aspmx.l.google.com2017-06-06 → 2017-09-14 · 5 obs

○ 2017-03-05 13:42:28
● 2017-06-06 09:39:58
● 2017-09-14 13:11:58
○ 2018-03-01 06:42:10
○ 2026-03-30 13:35:04

○MXalt4.aspmx.l.google.com2017-06-06 → 2017-09-14 · 5 obs

○ 2017-03-05 13:42:28
● 2017-06-06 09:39:58
● 2017-09-14 13:11:58
○ 2018-03-01 06:42:10
○ 2026-03-30 13:35:04

○MXaspmx.l.google.com2017-06-06 → 2017-09-14 · 5 obs

○ 2017-03-05 13:42:28
● 2017-06-06 09:39:58
● 2017-09-14 13:11:58
○ 2018-03-01 06:42:10
○ 2026-03-30 13:35:04

○MXcort.co2015-11-09 → 2018-03-01 · 7 obs

● 2015-11-09 06:21:10
● 2017-03-05 13:42:28
○ 2017-06-06 09:39:58
○ 2017-09-14 13:11:58
● 2018-03-01 06:42:10
○ 2026-03-27 13:19:30
○ 2026-03-30 13:35:04

●MXmail.protonmail.ch2026-03-27 → 2026-03-30 · 3 obs

○ 2018-03-01 06:42:10
● 2026-03-27 13:19:30
● 2026-03-30 13:35:04

●MXmailsec.protonmail.ch2026-03-27 → 2026-03-30 · 3 obs

○ 2018-03-01 06:42:10
● 2026-03-27 13:19:30
● 2026-03-30 13:35:04

○MXrtao4ica4iwiyodu5vza46shol2twg5oq3m27z5j2dqa4q2lbeyq.mx-verification.google.com2017-06-06 → 2017-09-14 · 5 obs

○ 2017-03-05 13:42:28
● 2017-06-06 09:39:58
● 2017-09-14 13:11:58
○ 2018-03-01 06:42:10
○ 2026-03-30 13:35:04

●A54.203.228.382026-03-27 → 2026-03-30 · 3 obs

○ 2018-03-01 06:42:10
● 2026-03-27 13:19:30
● 2026-03-30 13:35:04

○A66.85.47.102015-11-09 → 2017-09-14 · 7 obs

● 2015-11-09 06:21:10
● 2016-01-29 10:35:24
○ 2016-04-24 02:04:12
● 2017-02-18 18:20:48
● 2017-09-14 13:11:58
○ 2018-03-01 06:42:10
○ 2026-03-30 13:35:04

○A66.85.47.112016-04-24 → 2016-04-24 · 4 obs

○ 2016-01-29 10:35:24
● 2016-04-24 02:04:12
○ 2017-02-18 18:20:48
○ 2026-03-30 13:35:04

○A66.85.47.52018-03-01 → 2018-03-01 · 4 obs

○ 2017-09-14 13:11:58
● 2018-03-01 06:42:10
○ 2026-03-27 13:19:30
○ 2026-03-30 13:35:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
co	a.registrydns.co, b.registrydns.co, c.registrydns.co, d.registrydns.co	-
cort.co	pdns2.registrar-servers.com, pdns1.registrar-servers.com	-

✅ Authoritative Response

Server:156.154.133.100

NS records: pdns2.registrar-servers.com, pdns1.registrar-servers.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cort.co (unsigned zone)

⏱️ Timing

Total: 488ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`54.203.228.38`
NS	2	`pdns1.registrar-servers.com, pdns2.registrar-servers.com`
MX	2	`mail.protonmail.ch (pri: 10), mailsec.protonmail.ch (pri: 20)`
TXT	2	`v=spf1 include:_spf.protonmail.ch ~all, protonmail-verification=6ccc198e69a22caf`
SOA	1	`pdns1.registrar-servers.com hostmaster.r`

Analysis

Hierarchy

cort.co is the parent of www.cort.co.

IP Addresses

cort.co resolves to a single IP address: 54.203.228.38.

Other host names including futurex-products.com, wbrei.com, anytech.net, mommyandmefitness.net and indexit.net share IP numbers with cort.co.

Name Servers

cort.co's delegation uses two name servers, pdns1.registrar-servers.com and pdns2.registrar-servers.com.

cort.co shares the same name server setup as other domains, for example jcltnc.com, nuzeal.com, jujumeshop.com, faceliss.com and 011info.com.

cort.co at least partially shares name servers with other domains; for instance doggysupplystore.com.

Host names with two IPs:

pdns1.registrar-servers.com points to: 2610:a1:1024::100 and 156.154.132.100

pdns2.registrar-servers.com points to: 2610:a1:1025::100 and 156.154.133.100

Mail Servers

cort.co is handled by two mail servers: mail.protonmail.ch and mailsec.protonmail.ch.

cort.co shares its mail server setup with other domains, including buscaglione.net, mallow.art, wburgtrade.com, halfdates.com and strollcast.com.

The mail servers for cort.co are shared with other domains, for instance evandjohnston.com, alf.io, globi.org, retrovale.com and ammenheuser.com.

Host names with three IPs:

mail.protonmail.ch points to 176.119.200.128, 185.70.42.128 and 185.205.70.128

mailsec.protonmail.ch points to 176.119.200.129, 185.70.42.129 and 185.205.70.129

cort.co - robtex.com

cort.co

co

Previously MX for

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`cort.co`

`co`