classmarker.com - dns.ninja

`classmarker.com`

DNSSEC	⚠️ Not signed
A	2606:4700:10::6814:130b^{🇺🇸 Cloudflare2606:4700:10::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:10::ac42:9714^{🇺🇸 Cloudflare2606:4700:10::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.20.19.11^{Cloudflare104.20.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.66.151.20^{🇺🇸 Cloudflare172.66.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`gwen.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3aa0^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gwen.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0a0^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`gwen.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20a0^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`gwen.ns.cloudflare.com`
		A	108.162.192.160^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gwen.ns.cloudflare.com`
		A	172.64.32.160^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gwen.ns.cloudflare.com`
		A	173.245.58.160^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gwen.ns.cloudflare.com`
NS	`kevin.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bbf^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kevin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1bf^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`kevin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21bf^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`kevin.ns.cloudflare.com`
		A	108.162.193.191^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kevin.ns.cloudflare.com`
		A	172.64.33.191^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kevin.ns.cloudflare.com`
		A	173.245.59.191^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kevin.ns.cloudflare.com`
MX	`smtp.google.com` ⭐
		A	2607:f8b0:4004:c1d::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`ww-in-f26.1e100.net`
		A	2607:f8b0:4004:c23::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadrs-in-f26.1e100.net`
		A	2607:f8b0:4004:c23::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadrs-in-f27.1e100.net`
		A	2607:f8b0:4004:c2d::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`ry-in-f26.1e100.net`
		A	142.251.167.27^{🇺🇸 Google142.251.167.0/24}
			PTR	`ww-in-f27.1e100.net`
		A	172.253.62.26^{🇺🇸 Google172.253.62.0/24}
			PTR	`bc-in-f26.1e100.net`
		A	192.178.155.26^{🇺🇸 Google192.178.155.0/24}
			PTR	`yuiadrs-in-f26.1e100.net`
		A	192.178.155.27^{🇺🇸 Google192.178.155.0/24}
			PTR	`yuiadrs-in-f27.1e100.net`
		A	192.179.18.26^{🇺🇸 Google192.178.0.0/15}
			PTR	`ry-in-f26.1e100.net`
TXT	`_globalsign-domain-verification=IBsKvg4M9hgrU8Dp4E2grs87QsKpVp-J1AJXSCjuwK`
TXT	`_globalsign-domain-verification=UWc4_1BZ41W6BFEsLlUgb001oGMdkppz_LsCdFFawg`
TXT	`_globalsign-domain-verification=zJUd0AMk54l7guModgWBs4L6KhEIioAZBLH_VlOP2y`
TXT	`atlassian-domain-verification=FYo5W9VX8UCruNWIt4SIu6cykp6REEFWZNKcSOGbnC63Th3...`
TXT	`google-site-verification=EMNwrdZNgcBDxq_GdLUaO_-dnIkmibHV8LIi3nrn95I`
TXT	`v=spf1 +ip4:67.227.226.139 include:_spf.google.com include:amazonses.com ~all`
HTTPS	HTTP/2 ✓ hints match
		IPv4 hints	104.20.19.11, 172.66.151.20
		IPv6 hints	2606:4700:10::6814:130b, 2606:4700:10::ac42:9714
SOA	`gwen.ns.cloudflare.com`dns@cloudflare.com serial=2411800351

`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=1786666059

rank #78883 globally
rank #37494 in the tld
WOT: SAFE (79/100)
📈 Tranco rank: #57,296

Previously MX for

www.classmarker.com

classmarker.com

Subdomains

img.classmarker.com

api.classmarker.com

api-test.classmarker.com

www.classmarker.com

0cm.classmarker.com

Same first word

classmarker.net

classmarker.co.nz

classmarker.com

classmarker.co

Similar names

marcelkrass.com

DNS History

22 records (7 active, 15 former)

●NSgwen.ns.cloudflare.com2017-02-06 → 2026-08-14 · 3 obs

○ 2016-05-10 23:59:32
● 2017-02-06 05:53:44
● 2026-08-14 00:24:52

●NSkevin.ns.cloudflare.com2017-02-06 → 2026-08-14 · 3 obs

○ 2016-05-10 23:59:32
● 2017-02-06 05:53:44
● 2026-08-14 00:24:52

○NSns1.classmarker.com2015-08-25 → 2016-05-10 · 4 obs

● 2015-08-25 15:57:16
● 2016-05-10 23:59:32
○ 2017-02-06 05:53:44
○ 2026-08-14 00:24:52

○NSns2.classmarker.com2015-08-25 → 2016-05-10 · 4 obs

● 2015-08-25 15:57:16
● 2016-05-10 23:59:32
○ 2017-02-06 05:53:44
○ 2026-08-14 00:24:52

○MXclassmarker.com2015-08-25 → 2016-02-19 · 4 obs

● 2015-08-25 15:57:16
● 2016-02-19 13:40:18
○ 2016-02-29 02:46:24
○ 2026-08-14 00:24:52

○MXmail.classmarker.com2016-02-29 → 2021-08-30 · 5 obs

○ 2016-02-19 13:40:18
● 2016-02-29 02:46:24
● 2021-08-30 07:38:34
○ 2026-04-06 05:49:36
○ 2026-08-14 00:24:52

●MXsmtp.google.com2026-04-06 → 2026-08-14 · 3 obs

○ 2021-08-30 07:38:34
● 2026-04-06 05:49:36
● 2026-08-14 00:24:52

●A104.20.19.112026-04-06 → 2026-08-14 · 3 obs

○ 2021-08-30 07:38:34
● 2026-04-06 05:49:36
● 2026-08-14 00:24:52

○A104.20.77.1612017-02-06 → 2017-02-12 · 5 obs

○ 2016-05-10 23:59:32
● 2017-02-06 05:53:44
● 2017-02-12 23:53:22
○ 2021-08-30 07:38:34
○ 2026-08-14 00:24:52

○A104.20.78.1612017-02-06 → 2017-02-12 · 5 obs

○ 2016-05-10 23:59:32
● 2017-02-06 05:53:44
● 2017-02-12 23:53:22
○ 2021-08-30 07:38:34
○ 2026-08-14 00:24:52

○A104.22.72.782021-08-30 → 2021-08-30 · 4 obs

○ 2017-02-12 23:53:22
● 2021-08-30 07:38:34
○ 2026-04-06 05:49:36
○ 2026-08-14 00:24:52

○A104.22.73.782021-08-30 → 2021-08-30 · 4 obs

○ 2017-02-12 23:53:22
● 2021-08-30 07:38:34
○ 2026-04-06 05:49:36
○ 2026-08-14 00:24:52

●A172.66.151.202026-04-06 → 2026-08-14 · 3 obs

○ 2021-08-30 07:38:34
● 2026-04-06 05:49:36
● 2026-08-14 00:24:52

○A172.67.22.902021-08-30 → 2021-08-30 · 4 obs

○ 2017-02-12 23:53:22
● 2021-08-30 07:38:34
○ 2026-04-06 05:49:36
○ 2026-08-14 00:24:52

○A2400:cb00:2048:1::6814:4da12017-02-06 → 2017-02-12 · 5 obs

○ 2016-05-10 23:59:32
● 2017-02-06 05:53:44
● 2017-02-12 23:53:22
○ 2021-08-30 07:38:34
○ 2026-08-14 00:24:52

○A2400:cb00:2048:1::6814:4ea12017-02-06 → 2017-02-12 · 5 obs

○ 2016-05-10 23:59:32
● 2017-02-06 05:53:44
● 2017-02-12 23:53:22
○ 2021-08-30 07:38:34
○ 2026-08-14 00:24:52

●A2606:4700:10::6814:130b2026-04-06 → 2026-08-14 · 3 obs

○ 2021-08-30 07:38:34
● 2026-04-06 05:49:36
● 2026-08-14 00:24:52

○A2606:4700:10::6816:484e2021-08-30 → 2021-08-30 · 4 obs

○ 2017-02-12 23:53:22
● 2021-08-30 07:38:34
○ 2026-04-06 05:49:36
○ 2026-08-14 00:24:52

○A2606:4700:10::6816:494e2021-08-30 → 2021-08-30 · 4 obs

○ 2017-02-12 23:53:22
● 2021-08-30 07:38:34
○ 2026-04-06 05:49:36
○ 2026-08-14 00:24:52

●A2606:4700:10::ac42:97142026-04-06 → 2026-08-14 · 3 obs

○ 2021-08-30 07:38:34
● 2026-04-06 05:49:36
● 2026-08-14 00:24:52

○A2606:4700:10::ac43:165a2021-08-30 → 2021-08-30 · 4 obs

○ 2017-02-12 23:53:22
● 2021-08-30 07:38:34
○ 2026-04-06 05:49:36
○ 2026-08-14 00:24:52

○A67.227.137.672015-08-25 → 2016-05-10 · 4 obs

● 2015-08-25 15:57:16
● 2016-05-10 23:59:32
○ 2017-02-06 05:53:44
○ 2026-08-14 00:24:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net, a.gtld-servers.net...	-
classmarker.com	gwen.ns.cloudflare.com, kevin.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.191

NS records: gwen.ns.cloudflare.com, kevin.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 140ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.66.151.20, 104.20.19.11`
AAAA	2	`2606:4700:10::ac42:9714, 2606:4700:10::6814:130b`
NS	2	`gwen.ns.cloudflare.com, kevin.ns.cloudflare.com`
MX	1	`smtp.google.com (pri: 0)`
TXT	6	`_globalsign-domain-verification=IBsKvg4M, _globalsign-domain-verification=UWc4_1BZ...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h2"]`
SOA	1	`gwen.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

img.classmarker.com, api.classmarker.com, api-test.classmarker.com, www.classmarker.com and 0cm.classmarker.com each fall under the parent domain classmarker.com.

IP Addresses

classmarker.com resolves to four IP addresses: 104.20.19.11, 172.66.151.20, 2606:4700:10::6814:130b and 2606:4700:10::ac42:9714.

dkff.dk, api-test.classmarker.com, www.classmarker.com and two other host names share IP numbers with classmarker.com.

Name Servers

DNS delegation for classmarker.com points to two name servers: gwen.ns.cloudflare.com and kevin.ns.cloudflare.com.

classmarker.com uses the same name servers as several other domains — among them gecomarket.it, cristimilea.ro, biblestudydaily.org and two more.

classmarker.com partially shares its NS delegation with several other domains, including firstaiddirect.com, dplangues.com, ajgalleryniseko.com and two others.

These name servers often co-occur with the name servers theo.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

gwen.ns.cloudflare.com has IP addresses 108.162.192.160, 172.64.32.160 and 173.245.58.160, plus 3 other.

kevin.ns.cloudflare.com has IP addresses 108.162.193.191, 172.64.33.191 and 173.245.59.191, plus 3 other.

Mail Servers

Mail for classmarker.com is handled by a single mail server, smtp.google.com.

classmarker.com uses an identical mail server configuration to several other domains — among them am-estimating.com, educationcrossing.com, mail.cocoisland.vn and two more.

classmarker.com has at least partial mail server overlap with other domains such as reech.tv, fiveringsstudio.com, casaamarella.com.br and two more.

smtp.google.com resolves to 9 IP addresses — 142.251.167.27, 172.253.62.26, 192.178.155.26 and 6 others.