🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`linuxstudynotes.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:3ea6^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:898a^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.62.166^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.137.138^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`ara.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a43^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ara.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c043^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ara.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2043^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ara.ns.cloudflare.com`
		A	108.162.192.67^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ara.ns.cloudflare.com`
		A	172.64.32.67^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ara.ns.cloudflare.com`
		A	173.245.58.67^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ara.ns.cloudflare.com`
NS	`matias.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c49^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`matias.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c349^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`matias.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2349^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`matias.ns.cloudflare.com`
		A	108.162.195.73^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`matias.ns.cloudflare.com`
		A	162.159.44.73^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`matias.ns.cloudflare.com`
		A	172.64.35.73^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`matias.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.62.166, 172.67.137.138
		IPv6 hints	2606:4700:3033::6815:3ea6, 2606:4700:3036::ac43:898a
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=164, name=cloudflare-ech.com
SOA	`ara.ns.cloudflare.com`dns@cloudflare.com serial=2412539909

`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=1788436280

Same first word

linuxstudynotes.com

Previous names

Next names

DNS History

6 records (6 active, 0 former)

●NSara.ns.cloudflare.com2026-09-01 → 2026-09-03 · 2 obs

● 2026-09-01 06:35:42
● 2026-09-03 11:57:28

●NSmatias.ns.cloudflare.com2026-09-01 → 2026-09-03 · 2 obs

● 2026-09-01 06:35:42
● 2026-09-03 11:57:28

●A104.21.62.1662026-09-01 → 2026-09-03 · 2 obs

● 2026-09-01 06:35:42
● 2026-09-03 11:57:28

●A172.67.137.1382026-09-01 → 2026-09-03 · 2 obs

● 2026-09-01 06:35:42
● 2026-09-03 11:57:28

●A2606:4700:3033::6815:3ea62026-09-01 → 2026-09-03 · 2 obs

● 2026-09-01 06:35:42
● 2026-09-03 11:57:28

●A2606:4700:3036::ac43:898a2026-09-01 → 2026-09-03 · 2 obs

● 2026-09-01 06:35:42
● 2026-09-03 11:57:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
linuxstudynotes.com	ara.ns.cloudflare.com, matias.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.73

NS records: ara.ns.cloudflare.com, matias.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for linuxstudynotes.com (unsigned zone)

⏱️ Timing

Total: 223ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.62.166, 172.67.137.138`
AAAA	2	`2606:4700:3033::6815:3ea6, 2606:4700:3036::ac43:898a`
NS	2	`ara.ns.cloudflare.com, matias.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`ara.ns.cloudflare.com dns.cloudflare.com`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

linuxstudynotes.com resolves to four IP addresses: 104.21.62.166, 172.67.137.138, 2606:4700:3033::6815:3ea6 and 2606:4700:3036::ac43:898a.

codeflowstackhub.monster, dsl2.resell.biz, garuda376xjp.site and two other host names share IP numbers with linuxstudynotes.com.

Name Servers

linuxstudynotes.com uses two name servers for its delegation: ara.ns.cloudflare.com and matias.ns.cloudflare.com.

linuxstudynotes.com uses the same name servers as several other domains — among them magenta-mapusaurus.workers.dev, montrexoria.eu, nadun-0bf.workers.dev and two more.

linuxstudynotes.com partially shares its NS delegation with several other domains, including oggie.casa, clerici.tech, twinworld36-9.workers.dev and two others.

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

Hostnames that resolve to 6 IP addresses:

Hostname ara.ns.cloudflare.com directs to 108.162.192.67, 172.64.32.67 and 173.245.58.67 along with 3 other IP addresses.

Hostname matias.ns.cloudflare.com directs to 108.162.195.73, 162.159.44.73 and 172.64.35.73 along with 3 other IP addresses.

linuxstudynotes.com - robtex.com