cortexnote.app - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`cortexnote.app`

DNSSEC	⚠️ Not signed
A	2606:4700:3035::ac43:9e46^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:493a^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.73.58^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.158.70^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`khloe.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:268b^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`khloe.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c28b^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`khloe.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:228b^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`khloe.ns.cloudflare.com`
		A	108.162.194.139^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`khloe.ns.cloudflare.com`
		A	162.159.38.139^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`khloe.ns.cloudflare.com`
		A	172.64.34.139^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`khloe.ns.cloudflare.com`
NS	`randy.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c6d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`randy.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c36d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`randy.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:236d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`randy.ns.cloudflare.com`
		A	108.162.195.109^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`randy.ns.cloudflare.com`
		A	162.159.44.109^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`randy.ns.cloudflare.com`
		A	172.64.35.109^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`randy.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c29::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadum-in-f27.1e100.net`
		A	142.251.167.26^{🇺🇸 Google142.251.167.0/24}
			PTR	`ww-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c14::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	192.178.234.26^{🇺🇸 Google192.178.0.0/15}
			PTR	`ncsclj-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::1a^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f26.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f26.1e100.net`
		A	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
TXT	`google-site-verification=PeFRkw7WuyJTeCxbdVpDcty3UEunpXs_OzLMGymXKa8`
TXT	`v=spf1 include:spf.efwd.registrar-servers.com include:_spf.google.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.73.58, 172.67.158.70
		IPv6 hints	2606:4700:3035::ac43:9e46, 2606:4700:3036::6815:493a
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=237, name=cloudflare-ech.com
SOA	`khloe.ns.cloudflare.com`dns@cloudflare.com serial=2413137415

`app`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns-tld1.charlestonroadregistry.com` ⭐
	NS	`ns-tld2.charlestonroadregistry.com`
	NS	`ns-tld3.charlestonroadregistry.com`
	NS	`ns-tld4.charlestonroadregistry.com`
	NS	`ns-tld5.charlestonroadregistry.com`
	SOA	`ns-tld1.charlestonroadregistry.com`cloud-dns-hostmaster@google.com serial=101427

🔒 HSTS Preload (+subdomains)

Same first word

cortexnote.app

Similar names

neocortext.ph

neocortext.com

recontexto.com

neocortext.net

contextero.com

neocortext.co

teoxcontre.workers.dev

Previous names

Next names

DNS History

15 records (11 active, 4 former)

●NSkhloe.ns.cloudflare.com2026-08-21 → 2026-09-14 · 2 obs

● 2026-08-21 10:35:44
● 2026-09-14 07:42:00

●NSrandy.ns.cloudflare.com2026-08-21 → 2026-09-14 · 2 obs

● 2026-08-21 10:35:44
● 2026-09-14 07:42:00

●MXalt1.aspmx.l.google.com2026-08-21 → 2026-09-14 · 2 obs

● 2026-08-21 10:35:44
● 2026-09-14 07:42:00

●MXalt2.aspmx.l.google.com2026-08-21 → 2026-09-14 · 2 obs

● 2026-08-21 10:35:44
● 2026-09-14 07:42:00

●MXalt3.aspmx.l.google.com2026-08-21 → 2026-09-14 · 2 obs

● 2026-08-21 10:35:44
● 2026-09-14 07:42:00

●MXalt4.aspmx.l.google.com2026-08-21 → 2026-09-14 · 2 obs

● 2026-08-21 10:35:44
● 2026-09-14 07:42:00

●MXaspmx.l.google.com2026-08-21 → 2026-09-14 · 2 obs

● 2026-08-21 10:35:44
● 2026-09-14 07:42:00

●A104.21.73.582026-08-21 → 2026-09-14 · 6 obs

● 2026-08-21 10:35:44
○ 2026-09-02 12:21:20
● 2026-09-03 14:42:54
○ 2026-09-12 15:04:10
● 2026-09-14 07:41:58
● 2026-09-14 07:42:00

●A172.67.158.702026-08-21 → 2026-09-14 · 6 obs

● 2026-08-21 10:35:44
○ 2026-09-02 12:21:20
● 2026-09-03 14:42:54
○ 2026-09-12 15:04:10
● 2026-09-14 07:41:58
● 2026-09-14 07:42:00

○A188.114.96.02026-09-02 → 2026-09-12 · 6 obs

○ 2026-08-21 10:35:44
● 2026-09-02 12:21:20
○ 2026-09-03 14:42:54
● 2026-09-12 15:04:10
○ 2026-09-14 07:41:58
○ 2026-09-14 07:42:00

○A188.114.97.02026-09-02 → 2026-09-12 · 6 obs

○ 2026-08-21 10:35:44
● 2026-09-02 12:21:20
○ 2026-09-03 14:42:54
● 2026-09-12 15:04:10
○ 2026-09-14 07:41:58
○ 2026-09-14 07:42:00

●A2606:4700:3035::ac43:9e462026-08-21 → 2026-09-14 · 6 obs

● 2026-08-21 10:35:44
○ 2026-09-02 12:21:20
● 2026-09-03 14:42:54
○ 2026-09-12 15:04:10
● 2026-09-14 07:41:58
● 2026-09-14 07:42:00

●A2606:4700:3036::6815:493a2026-08-21 → 2026-09-14 · 6 obs

● 2026-08-21 10:35:44
○ 2026-09-02 12:21:20
● 2026-09-03 14:42:54
○ 2026-09-12 15:04:10
● 2026-09-14 07:41:58
● 2026-09-14 07:42:00

○A2a06:98c1:3120::2026-09-02 → 2026-09-12 · 6 obs

○ 2026-08-21 10:35:44
● 2026-09-02 12:21:20
○ 2026-09-03 14:42:54
● 2026-09-12 15:04:10
○ 2026-09-14 07:41:58
○ 2026-09-14 07:42:00

○A2a06:98c1:3121::2026-09-02 → 2026-09-12 · 6 obs

○ 2026-08-21 10:35:44
● 2026-09-02 12:21:20
○ 2026-09-03 14:42:54
● 2026-09-12 15:04:10
○ 2026-09-14 07:41:58
○ 2026-09-14 07:42:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
app	ns-tld1.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld5.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com...	10 records
cortexnote.app	randy.ns.cloudflare.com, khloe.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.35.109

NS records: randy.ns.cloudflare.com, khloe.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cortexnote.app (unsigned zone)

⏱️ Timing

Total: 619ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.73.58, 172.67.158.70`
AAAA	2	`2606:4700:3035::ac43:9e46, 2606:4700:3036::6815:493a`
NS	2	`khloe.ns.cloudflare.com, randy.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	2	`google-site-verification=PeFRkw7WuyJTeCx, v=spf1 include:spf.efwd.registrar-server`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`khloe.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 10

Out-of-bailiwick: 10 (ns-tld5.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com...)

Analysis

IP Addresses

cortexnote.app points to the four IP addresses 104.21.73.58, 172.67.158.70, 2606:4700:3035::ac43:9e46 and 2606:4700:3036::6815:493a.

Two other host names, along with rupppfalzgrafi.com, aveeplayerapk.com and tierleckerli.com, also share IP numbers with cortexnote.app.

Name Servers

cortexnote.app uses two name servers for its delegation: khloe.ns.cloudflare.com and randy.ns.cloudflare.com.

cortexnote.app shares its NS records with other domains, for example koko288-ky.site, topesperienza69539401.pages.dev, hotelikin.com and two others.

There is at least partial name server overlap between cortexnote.app and other domains — brightsidefestival.de, foxnode56300.workers.dev, about-me-bfb.pages.dev and two more among them.

The name servers rory.ns.cloudflare.com, kanye.ns.cloudflare.com and uma.ns.cloudflare.com are often found in combination with these name servers.

DNS names with 6 IP addresses:

Hostname khloe.ns.cloudflare.com directs to 108.162.194.139, 162.159.38.139 and 172.64.34.139 along with 3 other IP addresses.

Hostname randy.ns.cloudflare.com directs to 108.162.195.109, 162.159.44.109 and 172.64.35.109 along with 3 other IP addresses.

Mail Servers

cortexnote.app has five mail servers, which are aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

There is at least a partial MX overlap between cortexnote.app and other domains, including giomonsrl.com, kendraann.com, slinghive.com and two others.

alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com are mail servers that frequently appear together with these mail servers.

Host names that have two IP addresses:

aspmx.l.google.com directs traffic to 142.251.167.26 and 2607:f8b0:4004:c29::1b.

alt1.aspmx.l.google.com directs traffic to 192.178.234.26 and 2800:3f0:4003:c14::1b.

alt2.aspmx.l.google.com directs traffic to 172.253.116.27 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com directs traffic to 192.178.223.27 and 2a00:1450:4009:c0f::1a.

alt4.aspmx.l.google.com directs traffic to 172.253.157.27 and 2a00:1450:400c:c23::1a.