classdo.com - dns.ninja

`classdo.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3035::ac43:c1e0^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:3c4f^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.60.79^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.193.224^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`matteo.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2ce0^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`matteo.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3e0^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`matteo.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23e0^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`matteo.ns.cloudflare.com`
		A	108.162.195.224^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`matteo.ns.cloudflare.com`
		A	162.159.44.224^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`matteo.ns.cloudflare.com`
		A	172.64.35.224^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`matteo.ns.cloudflare.com`
NS	`ulla.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ae9^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ulla.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0e9^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ulla.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20e9^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ulla.ns.cloudflare.com`
		A	108.162.192.233^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ulla.ns.cloudflare.com`
		A	172.64.32.233^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ulla.ns.cloudflare.com`
		A	173.245.58.233^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ulla.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c21::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`pe-in-f26.1e100.net`
		A	173.194.45.26^{🇺🇸 Google173.194.0.0/16}
			PTR	`yuiadum-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁰⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁰⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`aspmx2.googlemail.com`⁽⁸⁰⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`aspmx3.googlemail.com`⁽⁸⁰⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
TXT	`facebook-domain-verification=947bw06wpf4gn826rfni6ojzt7c87e`
TXT	`google-site-verification=9gk7Rf6L5ItZHP9cB8Fs5qj3pKAeI70dAfduycb-r38`
TXT	`google-site-verification=lD68Rqw9ak1WGCi4sxwMpYxefjUUHZtYeoM8m4eboi8`
TXT	`spf2.0/pra include:google.com include:classdo.com include:amazonses.com inclu...`
TXT	`v=spf1 include:aspmx.googlemail.com include:amazonses.com include:mail.zendes...`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.60.79, 172.67.193.224
		IPv6 hints	2606:4700:3035::ac43:c1e0, 2606:4700:3037::6815:3c4f
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=121, name=cloudflare-ech.com
SOA	`matteo.ns.cloudflare.com`dns@cloudflare.com serial=2409414471

`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=1784583087

Subdomains

help.classdo.com

Same first word

classdo.com

classdo.net

Similar names

asldocs.com

doclass.com

coldass.com

classod.com

slsadco.com

colasds.com

cssload.net

dlassoc.com

DNS History

20 records (11 active, 9 former)

●NSmatteo.ns.cloudflare.com2026-07-20 → 2026-07-20 · 3 obs

○ 2017-05-17 03:43:44
● 2026-07-20 21:47:26
● 2026-07-20 21:47:28

○NSns-1153.awsdns-16.org2015-07-16 → 2017-05-17 · 4 obs

● 2015-07-16 01:34:10
● 2017-05-17 03:43:44
○ 2026-07-20 21:47:26
○ 2026-07-20 21:47:28

○NSns-1620.awsdns-10.co.uk2015-07-16 → 2017-05-17 · 4 obs

● 2015-07-16 01:34:10
● 2017-05-17 03:43:44
○ 2026-07-20 21:47:26
○ 2026-07-20 21:47:28

○NSns-325.awsdns-40.com2015-07-16 → 2017-05-17 · 4 obs

● 2015-07-16 01:34:10
● 2017-05-17 03:43:44
○ 2026-07-20 21:47:26
○ 2026-07-20 21:47:28

○NSns-938.awsdns-53.net2015-07-16 → 2017-05-17 · 4 obs

● 2015-07-16 01:34:10
● 2017-05-17 03:43:44
○ 2026-07-20 21:47:26
○ 2026-07-20 21:47:28

●NSulla.ns.cloudflare.com2026-07-20 → 2026-07-20 · 3 obs

○ 2017-05-17 03:43:44
● 2026-07-20 21:47:26
● 2026-07-20 21:47:28

●MXalt1.aspmx.l.google.com2015-07-16 → 2026-07-20 · 2 obs

● 2015-07-16 01:34:10
● 2026-07-20 21:47:28

●MXalt2.aspmx.l.google.com2015-07-16 → 2026-07-20 · 2 obs

● 2015-07-16 01:34:10
● 2026-07-20 21:47:28

●MXaspmx.l.google.com2015-07-16 → 2026-07-20 · 2 obs

● 2015-07-16 01:34:10
● 2026-07-20 21:47:28

●MXaspmx2.googlemail.com2015-07-16 → 2026-07-20 · 2 obs

● 2015-07-16 01:34:10
● 2026-07-20 21:47:28

●MXaspmx3.googlemail.com2015-07-16 → 2026-07-20 · 2 obs

● 2015-07-16 01:34:10
● 2026-07-20 21:47:28

●A104.21.60.792026-07-20 → 2026-07-20 · 3 obs

○ 2026-06-26 14:03:40
● 2026-07-20 21:47:26
● 2026-07-20 21:47:28

○A13.250.180.1172026-06-26 → 2026-06-26 · 4 obs

○ 2017-05-17 03:43:44
● 2026-06-26 14:03:40
○ 2026-07-20 21:47:26
○ 2026-07-20 21:47:28

●A172.67.193.2242026-07-20 → 2026-07-20 · 3 obs

○ 2026-06-26 14:03:40
● 2026-07-20 21:47:26
● 2026-07-20 21:47:28

○A175.41.254.1302015-07-16 → 2015-12-17 · 4 obs

● 2015-07-16 01:34:10
● 2015-12-17 14:03:04
○ 2016-03-20 16:24:40
○ 2026-07-20 21:47:28

○A18.141.115.2212026-06-26 → 2026-06-26 · 4 obs

○ 2017-05-17 03:43:44
● 2026-06-26 14:03:40
○ 2026-07-20 21:47:26
○ 2026-07-20 21:47:28

●A2606:4700:3035::ac43:c1e02026-07-20 → 2026-07-20 · 3 obs

○ 2026-06-26 14:03:40
● 2026-07-20 21:47:26
● 2026-07-20 21:47:28

●A2606:4700:3037::6815:3c4f2026-07-20 → 2026-07-20 · 3 obs

○ 2026-06-26 14:03:40
● 2026-07-20 21:47:26
● 2026-07-20 21:47:28

○A52.192.113.1542016-03-20 → 2017-05-17 · 5 obs

○ 2015-12-17 14:03:04
● 2016-03-20 16:24:40
● 2017-05-17 03:43:44
○ 2026-06-26 14:03:40
○ 2026-07-20 21:47:28

○A52.221.114.2392026-06-26 → 2026-06-26 · 4 obs

○ 2017-05-17 03:43:44
● 2026-06-26 14:03:40
○ 2026-07-20 21:47:26
○ 2026-07-20 21:47:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	k.gtld-servers.net, i.gtld-servers.net, l.gtld-servers.net, e.gtld-servers.net...	-
classdo.com	ulla.ns.cloudflare.com, matteo.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.224

NS records: ulla.ns.cloudflare.com, matteo.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for classdo.com (unsigned zone)

⏱️ Timing

Total: 432ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.60.79, 172.67.193.224`
AAAA	2	`2606:4700:3037::6815:3c4f, 2606:4700:3035::ac43:c1e0`
NS	2	`matteo.ns.cloudflare.com, ulla.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 20), alt1.aspmx.l.google.com (pri: 50)...`
TXT	5	`facebook-domain-verification=947bw06wpf4, google-site-verification=9gk7Rf6L5ItZHP9...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`matteo.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

help.classdo.com is delegated beneath classdo.com.

IP Addresses

classdo.com points to the four IP addresses 104.21.60.79, 172.67.193.224, 2606:4700:3035::ac43:c1e0 and 2606:4700:3037::6815:3c4f.

bet7790.com, genipack.com, novocuadro.com plus two other host names have IP numbers in common with classdo.com.

Name Servers

Two name servers handle the delegation for classdo.com: matteo.ns.cloudflare.com and ulla.ns.cloudflare.com.

The name server configuration of classdo.com is shared with other domains, for instance pub-law.net, ashoktak95.workers.dev, lumisafe.co.uk and two others.

There is at least partial name server overlap between classdo.com and other domains — b6ee7e40d6b1.com, jacobspandm.com, morehandles.co.uk and two more among them.

The name servers clay.ns.cloudflare.com, ali.ns.cloudflare.com and mckinley.ns.cloudflare.com are often found in combination with these name servers.

Hosts with 6 IP addresses each:

matteo.ns.cloudflare.com resolves to 108.162.195.224, 162.159.44.224 and 172.64.35.224 among others, with 3 other IP addresses in total.

ulla.ns.cloudflare.com resolves to 108.162.192.233, 172.64.32.233 and 173.245.58.233 among others, with 3 other IP addresses in total.

Mail Servers

classdo.com has five mail servers, which are aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com and two others.

At least some of the mail servers used by classdo.com are shared with other domains: oceanvibes.com, enjoytheprocessoflifeis.com, dealsauce.io and two others among them.

These mail servers are often deployed together with alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and 3 other mail servers.

Host names pointing to two IP addresses:

aspmx2.googlemail.com resolves to two addresses: 108.177.123.26 and 2800:3f0:4003:c0f::1b.

aspmx3.googlemail.com resolves to two addresses: 172.253.116.27 and 2a00:1450:400b:c02::1a.

aspmx.l.google.com resolves to two addresses: 173.194.45.26 and 2607:f8b0:4004:c21::1a.

alt1.aspmx.l.google.com resolves to two addresses: 108.177.123.26 and 2800:3f0:4003:c0f::1a.

alt2.aspmx.l.google.com resolves to two addresses: 172.253.116.27 and 2a00:1450:400b:c02::1a.

aspmx2.googlemail.com along with alt1.aspmx.l.google.com each resolve to 108.177.123.26 IP addresses.

aspmx3.googlemail.com along with alt2.aspmx.l.google.com each resolve to 2a00:1450:400b:c02::1a IP addresses.

aspmx3.googlemail.com along with alt2.aspmx.l.google.com each resolve to 172.253.116.27 IP addresses.