masterclass.com.br - dns.ninja

`masterclass.com.br`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::6815:2999^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3032::ac43:9424^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.41.153^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.148.36^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`brianna.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3af5^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brianna.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0f5^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`brianna.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20f5^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`brianna.ns.cloudflare.com`
		A	108.162.192.245^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brianna.ns.cloudflare.com`
		A	172.64.32.245^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brianna.ns.cloudflare.com`
		A	173.245.58.245^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brianna.ns.cloudflare.com`
NS	`gabe.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b72^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gabe.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c172^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`gabe.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2172^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`gabe.ns.cloudflare.com`
		A	108.162.193.114^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gabe.ns.cloudflare.com`
		A	172.64.33.114^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gabe.ns.cloudflare.com`
		A	173.245.59.114^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gabe.ns.cloudflare.com`
TXT	`fd520369056e5237f24d4315770669d2`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.41.153, 172.67.148.36
		IPv6 hints	2606:4700:3032::6815:2999, 2606:4700:3032::ac43:9424
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=214, name=cloudflare-ech.com
SOA	`brianna.ns.cloudflare.com`dns@cloudflare.com serial=2405884137

`com.br`

	DNSSEC	⚠️ Not signed
	NS	`a.dns.br` ⭐ ⚠️ Not in parent delegation
	NS	`b.dns.br` ⚠️ Not in parent delegation
	NS	`c.dns.br` ⚠️ Not in parent delegation
	NS	`d.dns.br` ⚠️ Not in parent delegation
	NS	`e.dns.br` ⚠️ Not in parent delegation
	NS	`f.dns.br` ⚠️ Not in parent delegation
	SOA	`a.dns.br`hostmaster@registro.br serial=2026211404

rank #521236 globally
rank #3733 in the tld
WOT: SAFE (69/100)

Subdomains

www.masterclass.com.br

Same first word

masterclass.courses

masterclass.co

masterclass.my

masterclass.ie

masterclass.ninja

masterclass.at

masterclass.com.hk

masterclass.de

masterclass.com.es

masterclass.com.mx

masterclass.az

masterclass.ng

masterclass.co.za

masterclass.lt

masterclass.us

masterclass.pl

masterclass.biz

masterclass.com.br

masterclass.hu

masterclass.eu

masterclass.edu.ge

masterclass.no

masterclass.team

masterclass.digital

masterclass.io

masterclass.al

masterclass.co.ke

masterclass.com.tr

masterclass.gr

masterclass.ca

masterclass.lv

masterclass.care

masterclass.kg

masterclass.jp

masterclass.co.id

masterclass.dev

masterclass.world

masterclass.cc

masterclass.com

masterclass.net

masterclass.bg

masterclass.media

masterclass.today

masterclass.fr

masterclass.uz

masterclass.je

masterclass.pt

masterclass.pk

masterclass.com.ua

masterclass.sydney

masterclass.ch

masterclass.cl

masterclass.am

masterclass.info

masterclass.it

masterclass.site

masterclass.se

masterclass.be

masterclass.co.uk

masterclass.dk

Similar names

DNS History

9 records (6 active, 3 former)

●NSbrianna.ns.cloudflare.com2018-08-04 → 2026-07-30 · 2 obs

● 2018-08-04 20:36:54
● 2026-07-30 17:04:44

●NSgabe.ns.cloudflare.com2018-08-04 → 2026-07-30 · 2 obs

● 2018-08-04 20:36:54
● 2026-07-30 17:04:44

●A104.21.41.1532026-02-21 → 2026-07-30 · 3 obs

○ 2018-08-04 20:36:54
● 2026-02-21 21:49:36
● 2026-07-30 17:04:44

○A159.203.74.462018-08-04 → 2018-08-04 · 3 obs

● 2018-08-04 20:36:54
○ 2026-02-21 21:49:36
○ 2026-07-30 17:04:44

●A172.67.148.362026-02-21 → 2026-07-30 · 3 obs

○ 2018-08-04 20:36:54
● 2026-02-21 21:49:36
● 2026-07-30 17:04:44

○A2606:4700:3030::ac43:94242026-02-21 → 2026-06-15 · 5 obs

○ 2018-08-04 20:36:54
● 2026-02-21 21:49:36
● 2026-06-15 04:41:16
○ 2026-06-24 06:24:02
○ 2026-07-30 17:04:44

●A2606:4700:3032::6815:29992026-06-24 → 2026-07-30 · 3 obs

○ 2026-06-15 04:41:16
● 2026-06-24 06:24:02
● 2026-07-30 17:04:44

●A2606:4700:3032::ac43:94242026-06-24 → 2026-07-30 · 3 obs

○ 2026-06-15 04:41:16
● 2026-06-24 06:24:02
● 2026-07-30 17:04:44

○A2606:4700:3033::6815:29992026-02-21 → 2026-06-15 · 5 obs

○ 2018-08-04 20:36:54
● 2026-02-21 21:49:36
● 2026-06-15 04:41:16
○ 2026-06-24 06:24:02
○ 2026-07-30 17:04:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
br	a.dns.br, b.dns.br, c.dns.br, d.dns.br...	-
masterclass.com.br	brianna.ns.cloudflare.com, gabe.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.193.114

NS records: brianna.ns.cloudflare.com, gabe.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for masterclass.com.br (unsigned zone)

⏱️ Timing

Total: 1004ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.148.36, 104.21.41.153`
AAAA	2	`2606:4700:3032::6815:2999, 2606:4700:3032::ac43:9424`
NS	2	`brianna.ns.cloudflare.com, gabe.ns.cloudflare.com`
TXT	1	`fd520369056e5237f24d4315770669d2`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`brianna.ns.cloudflare.com dns.cloudflare`

Analysis

Hierarchy

www.masterclass.com.br is a subdomain of masterclass.com.br.

IP Addresses

masterclass.com.br points to the four IP addresses 104.21.41.153, 172.67.148.36, 2606:4700:3032::6815:2999 and 2606:4700:3032::ac43:9424.

Among the host names that share IP numbers with masterclass.com.br are barbour-steenberg.blogbright.net, teriri.mom, mclain-keating-2.blogbright.net and two others.

Name Servers

Two name servers handle the delegation for masterclass.com.br: brianna.ns.cloudflare.com and gabe.ns.cloudflare.com.

masterclass.com.br has the same name server delegation as a number of other domains, such as socialnidemokrati.si, brunopiovan.com, aevora.es and two more.

The name servers of masterclass.com.br overlap at least partially with those of other domains — among them ufazc.com, cellarstak.com, debestesportspullen.nl and two more.

These name servers commonly appear alongside the name servers fish.ns.cloudflare.com and eoin.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

brianna.ns.cloudflare.com resolves to 108.162.192.245, 172.64.32.245 and 173.245.58.245 among others, with 3 other IP addresses in total.

gabe.ns.cloudflare.com resolves to 108.162.193.114, 172.64.33.114 and 173.245.59.114 among others, with 3 other IP addresses in total.