🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`brainstack.courses`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::ac43:bb43^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:58f2^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.88.242^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.187.67^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`grace.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a9f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`grace.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c09f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`grace.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:209f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`grace.ns.cloudflare.com`
		A	108.162.192.159^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`grace.ns.cloudflare.com`
		A	172.64.32.159^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`grace.ns.cloudflare.com`
		A	173.245.58.159^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`grace.ns.cloudflare.com`
NS	`tadeo.ns.cloudflare.com`
		A	2606:4700:58::a29f:2cc5^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tadeo.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3c5^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`tadeo.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23c5^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`tadeo.ns.cloudflare.com`
		A	108.162.195.197^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tadeo.ns.cloudflare.com`
		A	162.159.44.197^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tadeo.ns.cloudflare.com`
		A	172.64.35.197^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tadeo.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.88.242, 172.67.187.67
		IPv6 hints	2606:4700:3034::ac43:bb43, 2606:4700:3037::6815:58f2
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=75, name=cloudflare-ech.com
SOA	`grace.ns.cloudflare.com`dns@cloudflare.com serial=2412259323

`courses`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.nic.courses` ⭐
	NS	`b.nic.courses`
	NS	`c.nic.courses`
	NS	`x.nic.courses`
	NS	`y.nic.courses`
	NS	`z.nic.courses`
	SOA	`a.nic.courses`admin@tldns.godaddy serial=1788045907

⚠️ On DNS blocklist: spam-tlds

Same first word

brainstack.pro

brainstack.xyz

brainstack.org

brainstack.net

brainstack.me

brainstack.io

brainstack.dev

brainstack.de

brainstack.app

brainstack.courses

brainstack.nz

brainstack.tech

Similar names

crankbaits.ca

crankbaits.com

stackbrain.uk

brianstack.co.uk

abstrakinc.com

stackbrain.online

crankbaits.de

stackbrain.com

cantabrisk.com

brianstack.net

Previous names

Next names

DNS History

6 records (6 active, 0 former)

●NSgrace.ns.cloudflare.com2026-08-20 → 2026-08-30 · 2 obs

● 2026-08-20 08:44:32
● 2026-08-30 00:32:24

●NStadeo.ns.cloudflare.com2026-08-20 → 2026-08-30 · 2 obs

● 2026-08-20 08:44:32
● 2026-08-30 00:32:24

●A104.21.88.2422026-08-20 → 2026-08-30 · 2 obs

● 2026-08-20 08:44:32
● 2026-08-30 00:32:24

●A172.67.187.672026-08-20 → 2026-08-30 · 2 obs

● 2026-08-20 08:44:32
● 2026-08-30 00:32:24

●A2606:4700:3034::ac43:bb432026-08-20 → 2026-08-30 · 2 obs

● 2026-08-20 08:44:32
● 2026-08-30 00:32:24

●A2606:4700:3037::6815:58f22026-08-20 → 2026-08-30 · 2 obs

● 2026-08-20 08:44:32
● 2026-08-30 00:32:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
courses	c.nic.courses, a.nic.courses, y.nic.courses, z.nic.courses...	12 records
brainstack.courses	grace.ns.cloudflare.com, tadeo.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.159

NS records: grace.ns.cloudflare.com, tadeo.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for brainstack.courses (unsigned zone)

⏱️ Timing

Total: 742ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.187.67, 104.21.88.242`
AAAA	2	`2606:4700:3037::6815:58f2, 2606:4700:3034::ac43:bb43`
NS	2	`grace.ns.cloudflare.com, tadeo.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`grace.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (a.nic.courses, b.nic.courses, c.nic.courses...)

Analysis

IP Addresses

brainstack.courses resolves to four IP addresses: 104.21.88.242, 172.67.187.67, 2606:4700:3034::ac43:bb43 and 2606:4700:3037::6815:58f2.

Additional host names — coupleconnects.com, plehatron.com, 24stellarplatform.com and two others — share IP numbers with brainstack.courses.

Name Servers

The NS records for brainstack.courses delegate to grace.ns.cloudflare.com and tadeo.ns.cloudflare.com.

brainstack.courses shares its name server setup with other domains, including solarlocker.bond, bo-okwill-iam1913.workers.dev, scalegrowth.top and two others.

brainstack.courses partially shares its NS delegation with several other domains, including doret.ch, jackbomgiris.net, sunshowerlabs.com and two others.

These name servers often co-occur with the name servers martin.ns.cloudflare.com.

Host names with 6 IP numbers:

grace.ns.cloudflare.com maps to 108.162.192.159, 172.64.32.159, 173.245.58.159 and 3 additional IP addresses.

tadeo.ns.cloudflare.com maps to 108.162.195.197, 162.159.44.197, 172.64.35.197 and 3 additional IP addresses.

brainstack.courses - robtex.com