classr.pro - dns.ninja

`classr.pro`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::ac43:c0d8^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:21d9^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.33.217^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.192.216^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`lara.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a80^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lara.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c080^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`lara.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2080^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`lara.ns.cloudflare.com`
		A	108.162.192.128^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lara.ns.cloudflare.com`
		A	172.64.32.128^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lara.ns.cloudflare.com`
		A	173.245.58.128^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lara.ns.cloudflare.com`
NS	`plato.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bdf^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`plato.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1df^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`plato.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21df^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`plato.ns.cloudflare.com`
		A	108.162.193.223^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`plato.ns.cloudflare.com`
		A	172.64.33.223^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`plato.ns.cloudflare.com`
		A	173.245.59.223^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`plato.ns.cloudflare.com`
MX	`route1.mx.cloudflare.net` ⭐
		A	2606:4700:f5::b^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::c^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::d^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.11^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.12^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.13^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
MX	`route3.mx.cloudflare.net`⁽⁶⁸⁾
		A	2606:4700:f5::11^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::12^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::13^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.23^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.24^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.25^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
MX	`route2.mx.cloudflare.net`⁽⁸⁴⁾
		A	2606:4700:f5::e^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::f^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::10^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.17^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.18^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.19^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
TXT	`google-site-verification=eO3FgZFCrGWUpU2sloE8MsPJ4wdDN_5t6Zk-EWd0Fz8`
TXT	`v=spf1 include:spf.mailjet.com include:_spf.mx.cloudflare.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.33.217, 172.67.192.216
		IPv6 hints	2606:4700:3033::ac43:c0d8, 2606:4700:3037::6815:21d9
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=246, name=cloudflare-ech.com
SOA	`lara.ns.cloudflare.com`dns@cloudflare.com serial=2406708654

`pro`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.pro.afilias-nst.info` ⭐
	NS	`a2.pro.afilias-nst.info`
	NS	`b0.pro.afilias-nst.org`
	NS	`b2.pro.afilias-nst.org`
	NS	`c0.pro.afilias-nst.info`
	NS	`d0.pro.afilias-nst.org`
	SOA	`a0.pro.afilias-nst.info`hostmaster@donuts.email serial=1785155908

Same first word

classr.pro

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DNS History

14 records (9 active, 5 former)

●NSlara.ns.cloudflare.com2026-03-21 → 2026-07-27 · 3 obs

○ 2017-09-07 05:07:38
● 2026-03-21 02:50:48
● 2026-07-27 12:42:50

○NSns35.domaincontrol.com2016-12-10 → 2017-09-07 · 4 obs

● 2016-12-10 04:38:20
● 2017-09-07 05:07:38
○ 2026-03-21 02:50:48
○ 2026-07-27 12:42:50

○NSns36.domaincontrol.com2016-12-10 → 2017-09-07 · 4 obs

● 2016-12-10 04:38:20
● 2017-09-07 05:07:38
○ 2026-03-21 02:50:48
○ 2026-07-27 12:42:50

●NSplato.ns.cloudflare.com2026-03-21 → 2026-07-27 · 3 obs

○ 2017-09-07 05:07:38
● 2026-03-21 02:50:48
● 2026-07-27 12:42:50

○MXmail.bellasys.net2016-12-10 → 2017-09-07 · 4 obs

● 2016-12-10 04:38:20
● 2017-09-07 05:07:38
○ 2026-03-21 02:50:48
○ 2026-07-27 12:42:50

●MXroute1.mx.cloudflare.net2026-03-21 → 2026-07-27 · 3 obs

○ 2017-09-07 05:07:38
● 2026-03-21 02:50:48
● 2026-07-27 12:42:50

●MXroute2.mx.cloudflare.net2026-03-21 → 2026-07-27 · 3 obs

○ 2017-09-07 05:07:38
● 2026-03-21 02:50:48
● 2026-07-27 12:42:50

●MXroute3.mx.cloudflare.net2026-03-21 → 2026-07-27 · 3 obs

○ 2017-09-07 05:07:38
● 2026-03-21 02:50:48
● 2026-07-27 12:42:50

●A104.21.33.2172026-07-08 → 2026-07-27 · 3 obs

○ 2026-05-31 10:58:36
● 2026-07-08 01:47:16
● 2026-07-27 12:42:50

○A158.69.66.872016-12-10 → 2017-09-07 · 4 obs

● 2016-12-10 04:38:20
● 2017-09-07 05:07:38
○ 2026-03-21 02:50:48
○ 2026-07-27 12:42:50

●A172.67.192.2162026-07-08 → 2026-07-27 · 3 obs

○ 2026-05-31 10:58:36
● 2026-07-08 01:47:16
● 2026-07-27 12:42:50

○A216.198.79.12026-03-21 → 2026-05-31 · 5 obs

○ 2017-09-07 05:07:38
● 2026-03-21 02:50:48
● 2026-05-31 10:58:36
○ 2026-07-08 01:47:16
○ 2026-07-27 12:42:50

●A2606:4700:3033::ac43:c0d82026-07-08 → 2026-07-27 · 3 obs

○ 2026-05-31 10:58:36
● 2026-07-08 01:47:16
● 2026-07-27 12:42:50

●A2606:4700:3037::6815:21d92026-07-08 → 2026-07-27 · 3 obs

○ 2026-05-31 10:58:36
● 2026-07-08 01:47:16
● 2026-07-27 12:42:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
pro	b0.pro.afilias-nst.org, a2.pro.afilias-nst.info, a0.pro.afilias-nst.info, d0.pro.afilias-nst.org...	12 records
classr.pro	plato.ns.cloudflare.com, lara.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.59.223

NS records: plato.ns.cloudflare.com, lara.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for classr.pro (unsigned zone)

⏱️ Timing

Total: 716ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.33.217, 172.67.192.216`
AAAA	2	`2606:4700:3037::6815:21d9, 2606:4700:3033::ac43:c0d8`
NS	2	`lara.ns.cloudflare.com, plato.ns.cloudflare.com`
MX	3	`route3.mx.cloudflare.net (pri: 68), route1.mx.cloudflare.net (pri: 7)...`
TXT	2	`google-site-verification=eO3FgZFCrGWUpU2, v=spf1 include:spf.mailjet.com include:_`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`lara.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (d0.pro.afilias-nst.org, c0.pro.afilias-nst.info, b2.pro.afilias-nst.org...)

Analysis

IP Addresses

classr.pro has four IP addresses: 104.21.33.217, 172.67.192.216, 2606:4700:3033::ac43:c0d8 and 2606:4700:3037::6815:21d9.

Among the host names that share IP numbers with classr.pro are the-alcoholism-guide.org, urbaninsight.uk, yflen.com and two others.

Name Servers

classr.pro uses two name servers for its delegation: lara.ns.cloudflare.com and plato.ns.cloudflare.com.

classr.pro has the same name server delegation as a number of other domains, such as pelarionetheq.com, vytramoselix.com, thalurexomint.com and two more.

classr.pro has at least partial name server overlap with other domains, such as ogilvyhealthworld.info, 79etk.com, bnsw.com.au and two others.

It is common to see these name servers used together with name servers diana.ns.cloudflare.com and rick.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

Hostname lara.ns.cloudflare.com directs to 108.162.192.128, 172.64.32.128 and 173.245.58.128 along with 3 other IP addresses.

Hostname plato.ns.cloudflare.com directs to 108.162.193.223, 172.64.33.223 and 173.245.59.223 along with 3 other IP addresses.

Mail Servers

classr.pro has three mail servers: route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

classr.pro shares at least some of its mail servers with other domains — for example veilvideo.com, rectorsvacuum.com, dinosaurgamerun.com and two more.

Host names resolving to 6 IP numbers:

Hostname route1.mx.cloudflare.net directs to 162.159.205.11, 162.159.205.12 and 162.159.205.13 along with 3 other IP addresses.

Hostname route2.mx.cloudflare.net directs to 162.159.205.17, 162.159.205.18 and 162.159.205.19 along with 3 other IP addresses.

Hostname route3.mx.cloudflare.net directs to 162.159.205.23, 162.159.205.24 and 162.159.205.25 along with 3 other IP addresses.