linuxclassroom.com - dns.ninja

`linuxclassroom.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:301c^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:b024^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.48.28^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.176.36^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`hope.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3aa3^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hope.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0a3^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`hope.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20a3^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`hope.ns.cloudflare.com`
		A	108.162.192.163^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hope.ns.cloudflare.com`
		A	172.64.32.163^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hope.ns.cloudflare.com`
		A	173.245.58.163^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hope.ns.cloudflare.com`
NS	`lennon.ns.cloudflare.com`
		A	2606:4700:58::a29f:2ca5^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lennon.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3a5^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`lennon.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23a5^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`lennon.ns.cloudflare.com`
		A	108.162.195.165^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lennon.ns.cloudflare.com`
		A	162.159.44.165^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lennon.ns.cloudflare.com`
		A	172.64.35.165^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lennon.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.48.28, 172.67.176.36
		IPv6 hints	2606:4700:3033::6815:301c, 2606:4700:3036::ac43:b024
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=15, name=cloudflare-ech.com
SOA	`hope.ns.cloudflare.com`dns@cloudflare.com serial=2404924294

`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=1783997657

WOT: SAFE (73/100)

Same first word

linuxclassroom.com

linuxclassroom.org

Similar names

classroomlinux.com

classroomlinux.org

DNS History

16 records (6 active, 10 former)

●NShope.ns.cloudflare.com2026-03-10 → 2026-07-14 · 3 obs

○ 2018-09-19 10:17:34
● 2026-03-10 21:43:08
● 2026-07-14 03:23:08

●NSlennon.ns.cloudflare.com2026-03-10 → 2026-07-14 · 3 obs

○ 2018-09-19 10:17:34
● 2026-03-10 21:43:08
● 2026-07-14 03:23:08

○NSns-cloud-a1.googledomains.com2016-01-25 → 2018-09-19 · 5 obs

○ 2015-10-31 01:22:18
● 2016-01-25 14:09:16
● 2018-09-19 10:17:34
○ 2026-03-10 21:43:08
○ 2026-07-14 03:23:08

○NSns-cloud-a2.googledomains.com2016-01-25 → 2018-09-19 · 5 obs

○ 2015-10-31 01:22:18
● 2016-01-25 14:09:16
● 2018-09-19 10:17:34
○ 2026-03-10 21:43:08
○ 2026-07-14 03:23:08

○NSns-cloud-a3.googledomains.com2016-01-25 → 2018-09-19 · 5 obs

○ 2015-10-31 01:22:18
● 2016-01-25 14:09:16
● 2018-09-19 10:17:34
○ 2026-03-10 21:43:08
○ 2026-07-14 03:23:08

○NSns-cloud-a4.googledomains.com2016-01-25 → 2018-09-19 · 5 obs

○ 2015-10-31 01:22:18
● 2016-01-25 14:09:16
● 2018-09-19 10:17:34
○ 2026-03-10 21:43:08
○ 2026-07-14 03:23:08

○NSns1.hostmonster.com2015-06-11 → 2015-10-31 · 4 obs

● 2015-06-11 22:38:18
● 2015-10-31 01:22:18
○ 2016-01-25 14:09:16
○ 2026-07-14 03:23:08

○NSns2.hostmonster.com2015-06-11 → 2015-10-31 · 4 obs

● 2015-06-11 22:38:18
● 2015-10-31 01:22:18
○ 2016-01-25 14:09:16
○ 2026-07-14 03:23:08

●A104.21.48.282026-03-10 → 2026-07-14 · 3 obs

○ 2018-09-19 10:17:34
● 2026-03-10 21:43:08
● 2026-07-14 03:23:08

○A104.248.69.1352018-09-19 → 2018-09-19 · 4 obs

○ 2017-01-20 06:48:52
● 2018-09-19 10:17:34
○ 2026-03-10 21:43:08
○ 2026-07-14 03:23:08

●A172.67.176.362026-03-10 → 2026-07-14 · 3 obs

○ 2018-09-19 10:17:34
● 2026-03-10 21:43:08
● 2026-07-14 03:23:08

○A2606:4700:3030::ac43:b0242026-03-10 → 2026-06-15 · 5 obs

○ 2018-09-19 10:17:34
● 2026-03-10 21:43:08
● 2026-06-15 03:28:10
○ 2026-06-26 04:52:30
○ 2026-07-14 03:23:08

●A2606:4700:3033::6815:301c2026-03-10 → 2026-07-14 · 3 obs

○ 2018-09-19 10:17:34
● 2026-03-10 21:43:08
● 2026-07-14 03:23:08

●A2606:4700:3036::ac43:b0242026-06-26 → 2026-07-14 · 3 obs

○ 2026-06-15 03:28:10
● 2026-06-26 04:52:30
● 2026-07-14 03:23:08

○A45.55.167.652016-01-25 → 2017-01-20 · 5 obs

○ 2015-10-31 01:22:18
● 2016-01-25 14:09:16
● 2017-01-20 06:48:52
○ 2018-09-19 10:17:34
○ 2026-07-14 03:23:08

○A74.220.207.1922015-06-11 → 2015-10-31 · 4 obs

● 2015-06-11 22:38:18
● 2015-10-31 01:22:18
○ 2016-01-25 14:09:16
○ 2026-07-14 03:23:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	k.gtld-servers.net, l.gtld-servers.net, i.gtld-servers.net, b.gtld-servers.net...	-
linuxclassroom.com	hope.ns.cloudflare.com, lennon.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.165

NS records: hope.ns.cloudflare.com, lennon.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for linuxclassroom.com (unsigned zone)

⏱️ Timing

Total: 346ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.48.28, 172.67.176.36`
AAAA	2	`2606:4700:3036::ac43:b024, 2606:4700:3033::6815:301c`
NS	2	`hope.ns.cloudflare.com, lennon.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`hope.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

linuxclassroom.com directs to four IP numbers, which are 104.21.48.28, 172.67.176.36, 2606:4700:3033::6815:301c and 2606:4700:3036::ac43:b024.

Additional host names — buyleansyrup.io, envifx.com, techminer.com and two others — share IP numbers with linuxclassroom.com.

Name Servers

The NS records for linuxclassroom.com delegate to hope.ns.cloudflare.com and lennon.ns.cloudflare.com.

linuxclassroom.com shares its name server setup with other domains, including earnm-mystery-boxes.com, zeng-sl.workers.dev, deepany.top and two others.

There is at least partial name server overlap between linuxclassroom.com and other domains — (0x68656e746169)taku.com, skript.pl, ocuviqemoy.com and two more among them.

The name servers norm.ns.cloudflare.com, teagan.ns.cloudflare.com and jasmine.ns.cloudflare.com are often found in combination with these name servers.

Host names with 6 IP numbers:

hope.ns.cloudflare.com maps to 108.162.192.163, 172.64.32.163, 173.245.58.163 and 3 additional IP addresses.

lennon.ns.cloudflare.com maps to 108.162.195.165, 162.159.44.165, 172.64.35.165 and 3 additional IP addresses.