oncourselearning.com - dns.ninja

`oncourselearning.com`

DNSSEC	⚠️ Not signed
A	2a04:4e42::380^{🇺🇸 Fastly2a04:4e42::/48}
A	2a04:4e42:200::380^{🇺🇸 Fastly2a04:4e42:200::/48}
A	2a04:4e42:400::380^{🇺🇸 Fastly2a04:4e42:400::/48}
A	2a04:4e42:600::380^{🇺🇸 Fastly2a04:4e42:600::/48}
A	151.101.1.124^{🇺🇸 Fastly151.101.0.0/22}
A	151.101.65.124^{🇺🇸 Fastly151.101.64.0/22}
A	151.101.129.124^{🇺🇸 Fastly151.101.128.0/22}
A	151.101.193.124^{🇺🇸 Fastly151.101.192.0/22}
NS	`duke.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b6e^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`duke.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c16e^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`duke.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:216e^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`duke.ns.cloudflare.com`
		A	108.162.193.110^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`duke.ns.cloudflare.com`
		A	172.64.33.110^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`duke.ns.cloudflare.com`
		A	173.245.59.110^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`duke.ns.cloudflare.com`
NS	`jill.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a7a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jill.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c07a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jill.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:207a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jill.ns.cloudflare.com`
		A	108.162.192.122^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jill.ns.cloudflare.com`
		A	172.64.32.122^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jill.ns.cloudflare.com`
		A	173.245.58.122^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jill.ns.cloudflare.com`
MX	`oncourselearning-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c922::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bl0pr03cu00200.inbound.protection.outlook.com`
		A	2a01:111:f403:c946::5^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-ch4pr21cu00105.inbound.protection.outlook.com`
		A	2a01:111:f403:f905::3^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-dm5pr02cu00203.inbound.protection.outlook.com`
		A	2a01:111:f403:f90d::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sn1pr0501cu00301.inbound.protection.outlook.com`
		A	52.101.9.11^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bl2pr04cu00103.inbound.protection.outlook.com`
		A	52.101.41.24^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sj0pr03cu01600.inbound.protection.outlook.com`
		A	52.101.41.26^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sj0pr03cu01702.inbound.protection.outlook.com`
		A	52.101.41.54^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sj2pr05cu00506.inbound.protection.outlook.com`
TXT	`MS=ms34692463`
TXT	`facebook-domain-verification=uvuel9izdyjrkeunn7ckwh13oir0kq`
TXT	`google-site-verification=-qavTBOJvGvzKNl0V9qm9HOXUJklJZXzian6aAdLKGA`
TXT	`google-site-verification=6qhSYOfaEvkGiTtwAEF_Y5bCCd0ECGMDixGXHr5E71I`
TXT	`google-site-verification=7H9RNDwnUzslp5mH7MSWClce7m_VufajaZG6hyMz02s`
TXT	`google-site-verification=R1Cy6AtkKITnLjbG62j0jrwFTRK0hPTYhoXcbW8RJH4`
TXT	`google-site-verification=WuIvLI-h2dj8XdN_7ETrBNZMCZSnt0dBW0Mw9Tg_fqU`
TXT	`knowbe4-site-verification=4923f467351e9112235f7fef215f6c3c`
TXT	`pwk47m2b7vmth9bzc9mlhn9cmjfzxwby`
TXT	`v=DMARC1;p=quarantine;sp=none;pct=100;rua=mailto:cloudops@oncourselearning.co...`
TXT	`v=spf1 ip4:3.131.81.94/32 include:em870.oncourselearning.com include:spf.prot...`
SOA	`duke.ns.cloudflare.com`dns@cloudflare.com serial=2407741196

`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=1783808412

rank #331018 globally
rank #139670 in the tld
📈 Tranco rank: #260,999

Subdomains

clc_prod1x_adc.oncourselearning.com

webtracking.oncourselearning.com

flagsmith-proxy.oncourselearning.com

w.oncourselearning.com

b.oncourselearning.com

qclms.oncourselearning.com

prepxl.oncourselearning.com

connect.oncourselearning.com

sender-mail.oncourselearning.com

clc_prod_mag2_www.oncourselearning.com

lb_99_234.oncourselearning.com

www.oncourselearning.com

mail.oncourselearning.com

Same first word

oncourselearning.com

DNS History

20 records (11 active, 9 former)

●NSduke.ns.cloudflare.com2020-01-10 → 2026-07-11 · 3 obs

○ 2018-07-20 21:36:48
● 2020-01-10 22:48:52
● 2026-07-11 22:42:20

●NSjill.ns.cloudflare.com2020-01-10 → 2026-07-11 · 3 obs

○ 2018-07-20 21:36:48
● 2020-01-10 22:48:52
● 2026-07-11 22:42:20

○NSns0.ktek.net2015-06-11 → 2018-07-20 · 4 obs

● 2015-06-11 04:52:02
● 2018-07-20 21:36:48
○ 2020-01-10 22:48:52
○ 2026-07-11 22:42:20

○NSns1.ktek.net2015-06-11 → 2018-07-20 · 4 obs

● 2015-06-11 04:52:02
● 2018-07-20 21:36:48
○ 2020-01-10 22:48:52
○ 2026-07-11 22:42:20

○NSns2.ktek.net2015-06-11 → 2018-07-20 · 4 obs

● 2015-06-11 04:52:02
● 2018-07-20 21:36:48
○ 2020-01-10 22:48:52
○ 2026-07-11 22:42:20

○MXd279640a.ess.barracudanetworks.com2026-02-15 → 2026-04-20 · 5 obs

○ 2020-01-10 22:48:52
● 2026-02-15 16:49:22
● 2026-04-20 06:42:08
○ 2026-04-21 05:37:52
○ 2026-07-11 22:42:20

○MXd279640b.ess.barracudanetworks.com2026-02-15 → 2026-04-20 · 5 obs

○ 2020-01-10 22:48:52
● 2026-02-15 16:49:22
● 2026-04-20 06:42:08
○ 2026-04-21 05:37:52
○ 2026-07-11 22:42:20

●MXoncourselearning-com.mail.protection.outlook.com2015-06-11 → 2026-07-11 · 6 obs

● 2015-06-11 04:52:02
● 2020-01-10 22:48:52
○ 2026-02-15 16:49:22
○ 2026-04-20 06:42:08
● 2026-04-21 05:37:52
● 2026-07-11 22:42:20

●A151.101.1.1242026-02-15 → 2026-07-11 · 3 obs

○ 2020-01-10 22:48:52
● 2026-02-15 16:49:22
● 2026-07-11 22:42:20

●A151.101.129.1242026-02-15 → 2026-07-11 · 3 obs

○ 2020-01-10 22:48:52
● 2026-02-15 16:49:22
● 2026-07-11 22:42:20

●A151.101.193.1242026-02-15 → 2026-07-11 · 3 obs

○ 2020-01-10 22:48:52
● 2026-02-15 16:49:22
● 2026-07-11 22:42:20

●A151.101.65.1242026-02-15 → 2026-07-11 · 3 obs

○ 2020-01-10 22:48:52
● 2026-02-15 16:49:22
● 2026-07-11 22:42:20

●A2a04:4e42::3802026-02-23 → 2026-07-11 · 3 obs

○ 2026-02-15 16:49:22
● 2026-02-23 17:21:08
● 2026-07-11 22:42:20

●A2a04:4e42:200::3802026-02-23 → 2026-07-11 · 3 obs

○ 2026-02-15 16:49:22
● 2026-02-23 17:21:08
● 2026-07-11 22:42:20

●A2a04:4e42:400::3802026-02-23 → 2026-07-11 · 3 obs

○ 2026-02-15 16:49:22
● 2026-02-23 17:21:08
● 2026-07-11 22:42:20

●A2a04:4e42:600::3802026-02-23 → 2026-07-11 · 3 obs

○ 2026-02-15 16:49:22
● 2026-02-23 17:21:08
● 2026-07-11 22:42:20

○A66.150.98.802018-07-20 → 2020-01-10 · 5 obs

○ 2017-01-25 06:28:16
● 2018-07-20 21:36:48
● 2020-01-10 22:48:52
○ 2026-02-15 16:49:22
○ 2026-07-11 22:42:20

○A66.151.15.2112018-07-20 → 2020-01-10 · 5 obs

○ 2017-01-25 06:28:16
● 2018-07-20 21:36:48
● 2020-01-10 22:48:52
○ 2026-02-15 16:49:22
○ 2026-07-11 22:42:20

○A66.195.143.712016-12-04 → 2017-01-25 · 5 obs

○ 2016-04-20 20:30:28
● 2016-12-04 09:24:42
● 2017-01-25 06:28:16
○ 2018-07-20 21:36:48
○ 2026-07-11 22:42:20

○A69.30.44.1942015-06-11 → 2016-04-20 · 4 obs

● 2015-06-11 04:52:02
● 2016-04-20 20:30:28
○ 2016-12-04 09:24:42
○ 2026-07-11 22:42:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	h.gtld-servers.net, l.gtld-servers.net, a.gtld-servers.net, c.gtld-servers.net...	-
oncourselearning.com	duke.ns.cloudflare.com, jill.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.110

NS records: duke.ns.cloudflare.com, jill.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for oncourselearning.com (unsigned zone)

⏱️ Timing

Total: 572ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`151.101.1.124, 151.101.129.124...`
AAAA	4	`2a04:4e42:400::380, 2a04:4e42:200::380...`
NS	2	`duke.ns.cloudflare.com, jill.ns.cloudflare.com`
MX	1	`oncourselearning-com.mail.protection.out`
TXT	11	`MS=ms34692463, facebook-domain-verification=uvuel9izdyj...`
SOA	1	`duke.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

oncourselearning.com serves as parent to clc_prod1x_adc.oncourselearning.com, webtracking.oncourselearning.com, flagsmith-proxy.oncourselearning.com, w.oncourselearning.com, b.oncourselearning.com along with a few other host names.

IP Addresses

oncourselearning.com points to 8 IP addresses, including 151.101.1.124, 151.101.65.124 and 151.101.129.124, plus 5 other.

drmartens.com.au, newpig.it, www.beckershoes.com plus two other host names have IP numbers in common with oncourselearning.com.

Name Servers

DNS delegation for oncourselearning.com points to two name servers: duke.ns.cloudflare.com and jill.ns.cloudflare.com.

The name server configuration of oncourselearning.com is shared with other domains, for instance cuwebinars.com, stat-plus.com, willnextpro.net and two others.

oncourselearning.com has at least partial name server overlap with other domains, such as veridoc.my, beachape.com, xymtclub.com and two others.

It is common to find these name servers paired with the name servers roman.ns.cloudflare.com.

Hosts with 6 IP addresses each:

duke.ns.cloudflare.com has IP addresses 108.162.193.110, 172.64.33.110 and 173.245.59.110, plus 3 other.

jill.ns.cloudflare.com has IP addresses 108.162.192.122, 172.64.32.122 and 173.245.58.122, plus 3 other.

Mail Servers

oncourselearning.com uses one mail server — oncourselearning-com.mail.protection.outlook.com.

oncourselearning-com.mail.protection.outlook.com has 8 IP addresses: 52.101.9.11, 52.101.41.24, 52.101.41.26 plus 5 more.