`classhubedu.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::ac43:b23f^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::6815:11c6^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.17.198^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.178.63^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`dave.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b6d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dave.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c16d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`dave.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:216d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`dave.ns.cloudflare.com`
		A	108.162.193.109^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dave.ns.cloudflare.com`
		A	172.64.33.109^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dave.ns.cloudflare.com`
		A	173.245.59.109^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dave.ns.cloudflare.com`
NS	`kia.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ab3^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kia.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0b3^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`kia.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20b3^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`kia.ns.cloudflare.com`
		A	108.162.192.179^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kia.ns.cloudflare.com`
		A	172.64.32.179^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kia.ns.cloudflare.com`
		A	173.245.58.179^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kia.ns.cloudflare.com`
MX	`alt1.aspmx.l.google.com` ⭐
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com` ⭐
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`alt3.aspmx.l.google.com` ⭐
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com` ⭐
		A	2a00:1450:400c:c23::1b^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f27.1e100.net`
		A	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c09::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bh-in-f26.1e100.net`
		A	192.178.155.26^{🇺🇸 Google192.178.155.0/24}
			PTR	`yuiadrs-in-f26.1e100.net`
MX	`smtp.google.com` ⭐
		A	2607:f8b0:4004:c07::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bc-in-f27.1e100.net`
		A	2607:f8b0:4004:c29::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadum-in-f26.1e100.net`
		A	2607:f8b0:4004:c29::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadum-in-f27.1e100.net`
		A	2607:f8b0:4004:c2d::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`ry-in-f27.1e100.net`
		A	172.253.62.26^{🇺🇸 Google172.253.62.0/24}
			PTR	`bc-in-f26.1e100.net`
		A	172.253.62.27^{🇺🇸 Google172.253.62.0/24}
			PTR	`bc-in-f27.1e100.net`
		A	173.194.45.26^{🇺🇸 Google173.194.0.0/16}
			PTR	`yuiadum-in-f26.1e100.net`
		A	173.194.45.27^{🇺🇸 Google173.194.0.0/16}
			PTR	`yuiadum-in-f27.1e100.net`
		A	192.179.18.27^{🇺🇸 Google192.178.0.0/15}
			PTR	`ry-in-f27.1e100.net`
TXT	`google-site-verification=A2SYYk7jxh0-zDypBaCEI7gYyHDSRSi_yBv9487vM74`
TXT	`google-site-verification=P5yMUcmnYolpaGqOlnUMLvqF887VoU_xeGsQoFUWk-A`
TXT	`v=spf1 -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.17.198, 172.67.178.63
		IPv6 hints	2606:4700:3033::ac43:b23f, 2606:4700:3035::6815:11c6
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=64, name=cloudflare-ech.com
SOA	`dave.ns.cloudflare.com`dns@cloudflare.com serial=2409973303

`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=1785180502

Same first word

classhubedu.com

DNS History

16 records (12 active, 4 former)

●NSdave.ns.cloudflare.com2026-07-17 → 2026-07-27 · 2 obs

● 2026-07-17 03:26:44
● 2026-07-27 19:50:56

●NSkia.ns.cloudflare.com2026-07-17 → 2026-07-27 · 2 obs

● 2026-07-17 03:26:44
● 2026-07-27 19:50:56

●MXalt1.aspmx.l.google.com2026-07-17 → 2026-07-27 · 2 obs

● 2026-07-17 03:26:44
● 2026-07-27 19:50:56

●MXalt2.aspmx.l.google.com2026-07-17 → 2026-07-27 · 2 obs

● 2026-07-17 03:26:44
● 2026-07-27 19:50:56

●MXalt3.aspmx.l.google.com2026-07-17 → 2026-07-27 · 2 obs

● 2026-07-17 03:26:44
● 2026-07-27 19:50:56

●MXalt4.aspmx.l.google.com2026-07-17 → 2026-07-27 · 2 obs

● 2026-07-17 03:26:44
● 2026-07-27 19:50:56

●MXaspmx.l.google.com2026-07-17 → 2026-07-27 · 2 obs

● 2026-07-17 03:26:44
● 2026-07-27 19:50:56

●MXsmtp.google.com2026-07-17 → 2026-07-27 · 2 obs

● 2026-07-17 03:26:44
● 2026-07-27 19:50:56

●A104.21.17.1982026-07-19 → 2026-07-27 · 3 obs

○ 2026-07-17 03:26:44
● 2026-07-19 03:57:36
● 2026-07-27 19:50:56

●A172.67.178.632026-07-19 → 2026-07-27 · 3 obs

○ 2026-07-17 03:26:44
● 2026-07-19 03:57:36
● 2026-07-27 19:50:56

○A188.114.96.02026-07-17 → 2026-07-17 · 3 obs

● 2026-07-17 03:26:44
○ 2026-07-19 03:57:36
○ 2026-07-27 19:50:56

○A188.114.97.02026-07-17 → 2026-07-17 · 3 obs

● 2026-07-17 03:26:44
○ 2026-07-19 03:57:36
○ 2026-07-27 19:50:56

●A2606:4700:3033::ac43:b23f2026-07-19 → 2026-07-27 · 3 obs

○ 2026-07-17 03:26:44
● 2026-07-19 03:57:36
● 2026-07-27 19:50:56

●A2606:4700:3035::6815:11c62026-07-19 → 2026-07-27 · 3 obs

○ 2026-07-17 03:26:44
● 2026-07-19 03:57:36
● 2026-07-27 19:50:56

○A2a06:98c1:3120::2026-07-17 → 2026-07-17 · 3 obs

● 2026-07-17 03:26:44
○ 2026-07-19 03:57:36
○ 2026-07-27 19:50:56

○A2a06:98c1:3121::2026-07-17 → 2026-07-17 · 3 obs

● 2026-07-17 03:26:44
○ 2026-07-19 03:57:36
○ 2026-07-27 19:50:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
classhubedu.com	dave.ns.cloudflare.com, kia.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.109

NS records: dave.ns.cloudflare.com, kia.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for classhubedu.com (unsigned zone)

⏱️ Timing

Total: 207ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.17.198, 172.67.178.63`
AAAA	2	`2606:4700:3033::ac43:b23f, 2606:4700:3035::6815:11c6`
NS	2	`dave.ns.cloudflare.com, kia.ns.cloudflare.com`
MX	6	`alt1.aspmx.l.google.com (pri: 1), alt2.aspmx.l.google.com (pri: 1)...`
TXT	3	`google-site-verification=A2SYYk7jxh0-zDy, google-site-verification=P5yMUcmnYolpaGq...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`dave.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

classhubedu.com points to the four IP addresses 104.21.17.198, 172.67.178.63, 2606:4700:3033::ac43:b23f and 2606:4700:3035::6815:11c6.

Among the host names that share IP numbers with classhubedu.com are 3gp7.com, ftp.dlinkla.com, www.gemmavreyeslaw.com and two others.

Name Servers

The NS records for classhubedu.com delegate to dave.ns.cloudflare.com and kia.ns.cloudflare.com.

classhubedu.com has the same name server delegation as a number of other domains, such as wxhby2.com, teknosamobil.com, shenlong.wiki and two more.

At least some of classhubedu.com's name servers are shared with other domains, for example pelorgroup.com, sledgeforge.digital, 8kbet61.com and two more.

These name servers are often deployed together with the name servers tom.ns.cloudflare.com, mimi.ns.cloudflare.com, darwin.ns.cloudflare.com and dana.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

dave.ns.cloudflare.com maps to 108.162.193.109, 172.64.33.109, 173.245.59.109 and 3 additional IP addresses.

kia.ns.cloudflare.com maps to 108.162.192.179, 172.64.32.179, 173.245.58.179 and 3 additional IP addresses.

Mail Servers

classhubedu.com uses 6 mail servers for delivery: smtp.google.com, aspmx.l.google.com, alt1.aspmx.l.google.com and 3 other.

classhubedu.com shares at least some of its mail servers with other domains — for example ns500758.ns500759.ns500759.ns500758.ns500759.ns500735.ns500698.ns500735.ns500708.ns500698.ns500686.ns500619.trackreceptor.com, ns500758.ns500759.ns500759.ns500759.ns500736.ns500735.ns500698.ns500735.ns500698.ns500708.ns500698.ns500576.ns500576.ns500619.ns500576.trackreceptor.com, ns500758.ns500758.ns500758.ns500698.ns500736.ns500735.ns500698.ns500735.ns500576.ns500698.ns500708.ns500698.ns500619.trackreceptor.com and two more.

These mail servers tend to be used in conjunction with alt2.aspmx.l.google.com, alt3.aspmx.l.google.com, alt4.aspmx.l.google.com and two additional mail servers.

Host names resolving to 9 IP numbers:

smtp.google.com maps to 172.253.62.26, 172.253.62.27, 173.194.45.26 and 6 additional IP addresses.

Hosts with two IP numbers each:

The A records for aspmx.l.google.com return 192.178.155.26 and 2607:f8b0:4004:c09::1a.

The A records for alt1.aspmx.l.google.com return 108.177.123.27 and 2800:3f0:4003:c0f::1a.

The A records for alt2.aspmx.l.google.com return 172.253.116.27 and 2a00:1450:400b:c02::1b.

The A records for alt3.aspmx.l.google.com return 192.178.223.27 and 2a00:1450:4009:c0f::1b.

The A records for alt4.aspmx.l.google.com return 172.253.157.27 and 2a00:1450:400c:c23::1b.

classhubedu.com - robtex.com

classhubedu.com

com

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`classhubedu.com`

`com`