cortexbrain.com - dns.ninja

`cortexbrain.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:48cb^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3032::ac43:bb51^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.72.203^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.187.81^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`sergi.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c44^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sergi.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c344^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sergi.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2344^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sergi.ns.cloudflare.com`
		A	108.162.195.68^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sergi.ns.cloudflare.com`
		A	162.159.44.68^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sergi.ns.cloudflare.com`
		A	172.64.35.68^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sergi.ns.cloudflare.com`
NS	`sunny.ns.cloudflare.com`
		A	2606:4700:50::a29f:26a6^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sunny.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2a6^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sunny.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22a6^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sunny.ns.cloudflare.com`
		A	108.162.194.166^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sunny.ns.cloudflare.com`
		A	162.159.38.166^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sunny.ns.cloudflare.com`
		A	172.64.34.166^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sunny.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c21::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`pe-in-f27.1e100.net`
		A	172.253.122.27^{🇺🇸 Google172.253.122.0/24}
			PTR	`bh-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.26^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f26.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c00::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`ws-in-f26.1e100.net`
			PTR	`ws-in-x1a.1e100.net`
		A	173.194.76.26^{🇺🇸 Google173.194.76.0/24}
			PTR	`ws-in-f26.1e100.net`
TXT	`google-site-verification=S8W3Uy8pcrXpDw(0x663470)1-rzeTc7fE13yqgSN5OodEjqdc`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.72.203, 172.67.187.81
		IPv6 hints	2606:4700:3031::6815:48cb, 2606:4700:3032::ac43:bb51
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=160, name=cloudflare-ech.com
SOA	`sergi.ns.cloudflare.com`dns@cloudflare.com serial=2404948785

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1780730551

Same first word

cortexbrain.com

DNS History

34 records (11 active, 23 former)

○NScpns01.secureserver.net2008-03-09 → 2008-03-09 · 3 obs

● 2008-03-09 04:49:22
○ 2015-10-11 05:51:00
○ 2026-06-06 07:51:10

○NScpns02.secureserver.net2008-03-09 → 2008-03-09 · 3 obs

● 2008-03-09 04:49:22
○ 2015-10-11 05:51:00
○ 2026-06-06 07:51:10

○NSdns034.c.register.com2026-03-17 → 2026-04-01 · 5 obs

○ 2018-09-11 01:20:14
● 2026-03-17 13:21:26
● 2026-04-01 19:34:42
○ 2026-06-06 07:51:08
○ 2026-06-06 07:51:10

○NSdns083.d.register.com2026-03-17 → 2026-04-01 · 5 obs

○ 2018-09-11 01:20:14
● 2026-03-17 13:21:26
● 2026-04-01 19:34:42
○ 2026-06-06 07:51:08
○ 2026-06-06 07:51:10

○NSdns086.a.register.com2026-03-17 → 2026-04-01 · 5 obs

○ 2018-09-11 01:20:14
● 2026-03-17 13:21:26
● 2026-04-01 19:34:42
○ 2026-06-06 07:51:08
○ 2026-06-06 07:51:10

○NSdns1.p05.nsone.net2017-12-20 → 2017-12-20 · 4 obs

○ 2015-10-11 05:51:00
● 2017-12-20 19:02:38
○ 2018-08-16 20:19:56
○ 2026-06-06 07:51:10

○NSdns1.register.com2026-03-17 → 2026-04-01 · 5 obs

○ 2018-09-11 01:20:14
● 2026-03-17 13:21:26
● 2026-04-01 19:34:42
○ 2026-06-06 07:51:08
○ 2026-06-06 07:51:10

○NSdns196.b.register.com2026-03-17 → 2026-04-01 · 5 obs

○ 2018-09-11 01:20:14
● 2026-03-17 13:21:26
● 2026-04-01 19:34:42
○ 2026-06-06 07:51:08
○ 2026-06-06 07:51:10

○NSdns2.p05.nsone.net2017-12-20 → 2017-12-20 · 4 obs

○ 2015-10-11 05:51:00
● 2017-12-20 19:02:38
○ 2018-08-16 20:19:56
○ 2026-06-06 07:51:10

○NSdns2.register.com2026-03-17 → 2026-04-01 · 5 obs

○ 2018-09-11 01:20:14
● 2026-03-17 13:21:26
● 2026-04-01 19:34:42
○ 2026-06-06 07:51:08
○ 2026-06-06 07:51:10

○NSdns3.p05.nsone.net2017-12-20 → 2017-12-20 · 4 obs

○ 2015-10-11 05:51:00
● 2017-12-20 19:02:38
○ 2018-08-16 20:19:56
○ 2026-06-06 07:51:10

○NSdns4.p05.nsone.net2017-12-20 → 2017-12-20 · 4 obs

○ 2015-10-11 05:51:00
● 2017-12-20 19:02:38
○ 2018-08-16 20:19:56
○ 2026-06-06 07:51:10

○NSns1.namebrightdns.com2018-08-16 → 2018-09-11 · 5 obs

○ 2017-12-20 19:02:38
● 2018-08-16 20:19:56
● 2018-09-11 01:20:14
○ 2026-03-17 13:21:26
○ 2026-06-06 07:51:10

○NSns2.namebrightdns.com2018-08-16 → 2018-09-11 · 5 obs

○ 2017-12-20 19:02:38
● 2018-08-16 20:19:56
● 2018-09-11 01:20:14
○ 2026-03-17 13:21:26
○ 2026-06-06 07:51:10

●NSsergi.ns.cloudflare.com2026-06-06 → 2026-06-06 · 3 obs

○ 2026-04-01 19:34:42
● 2026-06-06 07:51:08
● 2026-06-06 07:51:10

●NSsunny.ns.cloudflare.com2026-06-06 → 2026-06-06 · 3 obs

○ 2026-04-01 19:34:42
● 2026-06-06 07:51:08
● 2026-06-06 07:51:10

●MXalt1.aspmx.l.google.com2017-12-20 → 2026-06-06 · 6 obs

○ 2015-10-11 05:51:00
● 2017-12-20 19:02:38
○ 2018-08-16 20:19:56
○ 2018-09-11 01:20:14
● 2026-03-17 13:21:26
● 2026-06-06 07:51:10

●MXalt2.aspmx.l.google.com2017-12-20 → 2026-06-06 · 6 obs

○ 2015-10-11 05:51:00
● 2017-12-20 19:02:38
○ 2018-08-16 20:19:56
○ 2018-09-11 01:20:14
● 2026-03-17 13:21:26
● 2026-06-06 07:51:10

●MXalt3.aspmx.l.google.com2017-12-20 → 2026-06-06 · 6 obs

○ 2015-10-11 05:51:00
● 2017-12-20 19:02:38
○ 2018-08-16 20:19:56
○ 2018-09-11 01:20:14
● 2026-03-17 13:21:26
● 2026-06-06 07:51:10

●MXalt4.aspmx.l.google.com2017-12-20 → 2026-06-06 · 6 obs

○ 2015-10-11 05:51:00
● 2017-12-20 19:02:38
○ 2018-08-16 20:19:56
○ 2018-09-11 01:20:14
● 2026-03-17 13:21:26
● 2026-06-06 07:51:10

●MXaspmx.l.google.com2017-12-20 → 2026-06-06 · 6 obs

○ 2015-10-11 05:51:00
● 2017-12-20 19:02:38
○ 2018-08-16 20:19:56
○ 2018-09-11 01:20:14
● 2026-03-17 13:21:26
● 2026-06-06 07:51:10

○MXmailstore1.secureserver.net2008-03-09 → 2008-03-09 · 3 obs

● 2008-03-09 04:49:22
○ 2015-10-11 05:51:00
○ 2026-06-06 07:51:10

○MXsmtp.secureserver.net2008-03-09 → 2008-03-09 · 3 obs

● 2008-03-09 04:49:22
○ 2015-10-11 05:51:00
○ 2026-06-06 07:51:10

●A104.21.72.2032026-06-06 → 2026-06-06 · 3 obs

○ 2026-04-01 19:34:42
● 2026-06-06 07:51:08
● 2026-06-06 07:51:10

●A172.67.187.812026-06-06 → 2026-06-06 · 3 obs

○ 2026-04-01 19:34:42
● 2026-06-06 07:51:08
● 2026-06-06 07:51:10

○A198.185.159.1442017-12-20 → 2017-12-20 · 4 obs

○ 2015-10-11 05:51:00
● 2017-12-20 19:02:38
○ 2018-08-16 20:19:56
○ 2026-06-06 07:51:10

○A198.185.159.1452017-12-20 → 2017-12-20 · 4 obs

○ 2015-10-11 05:51:00
● 2017-12-20 19:02:38
○ 2018-08-16 20:19:56
○ 2026-06-06 07:51:10

○A198.49.23.1442017-12-20 → 2017-12-20 · 4 obs

○ 2015-10-11 05:51:00
● 2017-12-20 19:02:38
○ 2018-08-16 20:19:56
○ 2026-06-06 07:51:10

○A198.49.23.1452017-12-20 → 2017-12-20 · 4 obs

○ 2015-10-11 05:51:00
● 2017-12-20 19:02:38
○ 2018-08-16 20:19:56
○ 2026-06-06 07:51:10

○A216.198.79.12026-03-17 → 2026-04-01 · 5 obs

○ 2018-08-16 20:19:56
● 2026-03-17 13:21:26
● 2026-04-01 19:34:42
○ 2026-06-06 07:51:08
○ 2026-06-06 07:51:10

●A2606:4700:3031::6815:48cb2026-06-06 → 2026-06-06 · 3 obs

○ 2026-04-01 19:34:42
● 2026-06-06 07:51:08
● 2026-06-06 07:51:10

●A2606:4700:3032::ac43:bb512026-06-06 → 2026-06-06 · 3 obs

○ 2026-04-01 19:34:42
● 2026-06-06 07:51:08
● 2026-06-06 07:51:10

○A68.178.232.1432008-03-09 → 2008-03-09 · 3 obs

● 2008-03-09 04:49:22
○ 2015-10-11 05:51:00
○ 2026-06-06 07:51:10

○CNAMEhdredirect-lb3-890977680.us-east-1.elb.amazonaws.com2018-08-16 → 2018-09-18 · 4 obs

● 2018-08-16 20:19:56
● 2018-09-18 16:40:16
○ 2026-03-17 13:21:26
○ 2026-06-06 07:51:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	k.gtld-servers.net, m.gtld-servers.net, j.gtld-servers.net, d.gtld-servers.net...	-
cortexbrain.com	sunny.ns.cloudflare.com, sergi.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.68

NS records: sunny.ns.cloudflare.com, sergi.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cortexbrain.com (unsigned zone)

⏱️ Timing

Total: 326ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.187.81, 104.21.72.203`
AAAA	2	`2606:4700:3032::ac43:bb51, 2606:4700:3031::6815:48cb`
NS	2	`sergi.ns.cloudflare.com, sunny.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	1	`google-site-verification=S8W3Uy8pcrXpDwf`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`sergi.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (sunny.ns.cloudflare.com, sunny.ns.cloudflare.com, sunny.ns.cloudflare.com...)

Analysis

IP Addresses

cortexbrain.com resolves to 4 IP numbers: 104.21.72.203, 172.67.187.81, 2606:4700:3031::6815:48cb and 2606:4700:3032::ac43:bb51.

Additional host names — skyjackgraco.com, replica-watch.co, mbkmcenter.upp.ac.id and two others — share IP numbers with cortexbrain.com.

Name Servers

cortexbrain.com is served by two delegated name servers, sergi.ns.cloudflare.com and sunny.ns.cloudflare.com.

cortexbrain.com shares its name server setup with other domains, including teradium.org, abingdonpressbytery.com, pw-vistadelmar.com and two others.

At least some of cortexbrain.com's name servers are shared with other domains, for example blochd.com, tienjin.com, humanizerpro.ai and two more.

These name servers are frequently paired with the name servers paityn.ns.cloudflare.com, sullivan.ns.cloudflare.com, ricardo.ns.cloudflare.com and two others.

Host names with 6 IP numbers:

sergi.ns.cloudflare.com directs to 108.162.195.68, 162.159.44.68, 172.64.35.68 and three others.

sunny.ns.cloudflare.com directs to 108.162.194.166, 162.159.38.166, 172.64.34.166 and three others.

Mail Servers

cortexbrain.com is handled by 5 mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

cortexbrain.com shares mail servers — at least in part — with other domains, including ryberbearing.com.tw, rarestk.com, post-men.com and two others.

These mail servers are frequently paired with the mail servers alt4.aspmx.l.google.com, alt3.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com.

Host names with two IP numbers:

aspmx.l.google.com maps to two IP addresses — 172.253.122.27 and 2607:f8b0:4004:c21::1b.

alt1.aspmx.l.google.com maps to two IP addresses — 108.177.123.26 and 2800:3f0:4003:c0f::1b.

alt2.aspmx.l.google.com maps to two IP addresses — 172.253.116.27 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com maps to two IP addresses — 192.178.223.26 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com maps to two IP addresses — 173.194.76.26 and 2a00:1450:400c:c00::1a.