`classroomlesson.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::ac43:8219^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::6815:764^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.7.100^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.130.25^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`hugh.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b75^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hugh.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c175^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`hugh.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2175^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`hugh.ns.cloudflare.com`
		A	108.162.193.117^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hugh.ns.cloudflare.com`
		A	172.64.33.117^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hugh.ns.cloudflare.com`
		A	173.245.59.117^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hugh.ns.cloudflare.com`
NS	`jule.ns.cloudflare.com`
		A	2606:4700:50::adf5:3aaf^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jule.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0af^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jule.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20af^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jule.ns.cloudflare.com`
		A	108.162.192.175^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jule.ns.cloudflare.com`
		A	172.64.32.175^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jule.ns.cloudflare.com`
		A	173.245.58.175^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jule.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.7.100, 172.67.130.25
		IPv6	2606:4700:3034::ac43:8219, 2606:4700:3035::6815:764
SOA	`hugh.ns.cloudflare.com`dns@cloudflare.com serial=2398628489

`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=1771291435

Same first word

classroomlesson.com

classroomlesson.github.io

DNS History

10 records (6 active, 4 former)

●NShugh.ns.cloudflare.com2026-02-19 → 2026-03-14 · 2 obs

● 2026-02-19 19:21:16
● 2026-03-14 11:41:30

●NSjule.ns.cloudflare.com2026-02-19 → 2026-03-14 · 2 obs

● 2026-02-19 19:21:16
● 2026-03-14 11:41:30

●A104.21.7.1002026-02-19 → 2026-03-14 · 4 obs

● 2026-02-19 19:21:16
○ 2026-02-27 12:03:18
● 2026-03-14 11:41:26
● 2026-03-14 11:41:30

●A172.67.130.252026-02-19 → 2026-03-14 · 4 obs

● 2026-02-19 19:21:16
○ 2026-02-27 12:03:18
● 2026-03-14 11:41:26
● 2026-03-14 11:41:30

○A188.114.96.02026-02-27 → 2026-02-27 · 4 obs

○ 2026-02-19 19:21:16
● 2026-02-27 12:03:18
○ 2026-03-14 11:41:26
○ 2026-03-14 11:41:30

○A188.114.97.02026-02-27 → 2026-02-27 · 4 obs

○ 2026-02-19 19:21:16
● 2026-02-27 12:03:18
○ 2026-03-14 11:41:26
○ 2026-03-14 11:41:30

●A2606:4700:3034::ac43:82192026-02-19 → 2026-03-14 · 4 obs

● 2026-02-19 19:21:16
○ 2026-02-27 12:03:18
● 2026-03-14 11:41:26
● 2026-03-14 11:41:30

●A2606:4700:3035::6815:7642026-02-19 → 2026-03-14 · 4 obs

● 2026-02-19 19:21:16
○ 2026-02-27 12:03:18
● 2026-03-14 11:41:26
● 2026-03-14 11:41:30

○A2a06:98c1:3120::2026-02-27 → 2026-02-27 · 4 obs

○ 2026-02-19 19:21:16
● 2026-02-27 12:03:18
○ 2026-03-14 11:41:26
○ 2026-03-14 11:41:30

○A2a06:98c1:3121::2026-02-27 → 2026-02-27 · 4 obs

○ 2026-02-19 19:21:16
● 2026-02-27 12:03:18
○ 2026-03-14 11:41:26
○ 2026-03-14 11:41:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
classroomlesson.com	hugh.ns.cloudflare.com, jule.ns.cloudflare.com	12 records

✅ Authoritative Response

Server: 108.162.193.117

NS records: hugh.ns.cloudflare.com, jule.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for classroomlesson.com (unsigned zone)

⏱️ Timing

Total: 242ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.7.100, 172.67.130.25`
AAAA	2	`2606:4700:3035::6815:764, 2606:4700:3034::ac43:8219`
NS	2	`hugh.ns.cloudflare.com, jule.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`hugh.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

classroomlesson.com points to four IP numbers: 2606:4700:3034::ac43:8219, 2606:4700:3035::6815:764, 104.21.7.100 and 172.67.130.25.

Other host names, for instance kanota.net, snapvade.org, japp.jkhub.org, myrls.in.cdn.cloudflare.net and alachpress.com share IP numbers with classroomlesson.com.

Name Servers

Delegation for classroomlesson.com rests with two name servers, hugh.ns.cloudflare.com and jule.ns.cloudflare.com.

classroomlesson.com shares the same name server setup as other domains, including zerkalo.com.kz, 4xfjb.info, foodsnfruits.com, pkmn.world and frostnova.com.

classroomlesson.com at least partially shares name servers with other domains, for instance future-science.com, dm2018.com, flagshipboutique.co.uk, thaiest.com and doraee.com.

these name servers are commonly used with chan.ns.cloudflare.com, elsa.ns.cloudflare.com and alla.ns.cloudflare.com.

Host names with six IP numbers: hugh.ns.cloudflare.com points to: 2606:4700:58::adf5:3b75, 2803:f800:50::6ca2:c175, 2a06:98c1:50::ac40:2175, 108.162.193.117, 172.64.33.117 and 173.245.59.117. jule.ns.cloudflare.com points to: 2606:4700:50::adf5:3aaf, 2803:f800:50::6ca2:c0af, 2a06:98c1:50::ac40:20af, 108.162.192.175, 172.64.32.175 and 173.245.58.175.

classroomlesson.com - robtex.com