coursejet.com - dns.ninja

`coursejet.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:15ee^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3030::ac43:c96b^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.21.238^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.201.107^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`jen.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:26b9^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jen.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2b9^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jen.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22b9^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jen.ns.cloudflare.com`
		A	108.162.194.185^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jen.ns.cloudflare.com`
		A	162.159.38.185^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jen.ns.cloudflare.com`
		A	172.64.34.185^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jen.ns.cloudflare.com`
NS	`salvador.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c64^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`salvador.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c364^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`salvador.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2364^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`salvador.ns.cloudflare.com`
		A	108.162.195.100^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`salvador.ns.cloudflare.com`
		A	162.159.44.100^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`salvador.ns.cloudflare.com`
		A	172.64.35.100^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`salvador.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c17::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bl-in-f26.1e100.net`
		A	172.253.115.27^{🇺🇸 Google172.253.115.0/24}
			PTR	`bg-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		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`⁽⁵⁾
		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`⁽¹⁰⁾
		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`⁽¹⁰⁾
		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`
TXT	`google-site-verification=uEmZg_31GC8wyrCIIR6bfFRvf6JfdOyQ1rGrA3TnAyM`
TXT	`v=spf1 a mx include:websitewelcome.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.21.238, 172.67.201.107
		IPv6 hints	2606:4700:3030::6815:15ee, 2606:4700:3030::ac43:c96b
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=200, name=cloudflare-ech.com
SOA	`jen.ns.cloudflare.com`dns@cloudflare.com serial=2410482635

`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=1785237547

Subdomains

mail.coursejet.com

Same first word

coursejet.com

Similar names

joecuster.com

jetsource.ir

jetsource.com

jetcourse.com

sourcejet.com

DNS History

34 records (11 active, 23 former)

●NSjen.ns.cloudflare.com2026-05-24 → 2026-07-28 · 3 obs

○ 2026-05-17 11:58:54
● 2026-05-24 15:48:50
● 2026-07-28 11:22:16

○NSns1.bluehost.com2026-04-22 → 2026-05-17 · 5 obs

○ 2017-08-21 03:54:14
● 2026-04-22 01:43:16
● 2026-05-17 11:58:54
○ 2026-05-24 15:48:50
○ 2026-07-28 11:22:16

○NSns1.namebrightdns.com2015-06-10 → 2017-08-21 · 4 obs

● 2015-06-10 13:29:42
● 2017-08-21 03:54:14
○ 2026-04-22 01:43:16
○ 2026-07-28 11:22:16

○NSns2.bluehost.com2026-04-22 → 2026-05-17 · 5 obs

○ 2017-08-21 03:54:14
● 2026-04-22 01:43:16
● 2026-05-17 11:58:54
○ 2026-05-24 15:48:50
○ 2026-07-28 11:22:16

○NSns2.namebrightdns.com2015-11-10 → 2017-08-21 · 5 obs

○ 2015-06-10 13:29:42
● 2015-11-10 20:16:44
● 2017-08-21 03:54:14
○ 2026-04-22 01:43:16
○ 2026-07-28 11:22:16

○NSnsg1.namebrightdns.com2015-06-10 → 2015-06-10 · 3 obs

● 2015-06-10 13:29:42
○ 2015-11-10 20:16:44
○ 2026-07-28 11:22:16

○NSnsg2.namebrightdns.com2015-06-10 → 2015-06-10 · 3 obs

● 2015-06-10 13:29:42
○ 2015-11-10 20:16:44
○ 2026-07-28 11:22:16

●NSsalvador.ns.cloudflare.com2026-05-24 → 2026-07-28 · 3 obs

○ 2026-05-17 11:58:54
● 2026-05-24 15:48:50
● 2026-07-28 11:22:16

●MXalt1.aspmx.l.google.com2026-04-22 → 2026-07-28 · 3 obs

○ 2017-08-21 03:54:14
● 2026-04-22 01:43:16
● 2026-07-28 11:22:16

●MXalt2.aspmx.l.google.com2026-04-22 → 2026-07-28 · 3 obs

○ 2017-08-21 03:54:14
● 2026-04-22 01:43:16
● 2026-07-28 11:22:16

●MXalt3.aspmx.l.google.com2026-04-22 → 2026-07-28 · 3 obs

○ 2017-08-21 03:54:14
● 2026-04-22 01:43:16
● 2026-07-28 11:22:16

●MXalt4.aspmx.l.google.com2026-04-22 → 2026-07-28 · 3 obs

○ 2017-08-21 03:54:14
● 2026-04-22 01:43:16
● 2026-07-28 11:22:16

○MXanmail.namebrightmail.com2015-06-10 → 2015-06-10 · 3 obs

● 2015-06-10 13:29:42
○ 2015-11-10 20:16:44
○ 2026-07-28 11:22:16

●MXaspmx.l.google.com2026-04-22 → 2026-07-28 · 3 obs

○ 2017-08-21 03:54:14
● 2026-04-22 01:43:16
● 2026-07-28 11:22:16

○MXmail1.namebrightmail.com2016-12-02 → 2017-08-21 · 5 obs

○ 2015-11-10 20:16:44
● 2016-12-02 03:24:02
● 2017-08-21 03:54:14
○ 2026-04-22 01:43:16
○ 2026-07-28 11:22:16

○MXmail2.namebrightmail.com2016-12-02 → 2017-08-21 · 5 obs

○ 2015-11-10 20:16:44
● 2016-12-02 03:24:02
● 2017-08-21 03:54:14
○ 2026-04-22 01:43:16
○ 2026-07-28 11:22:16

●A104.21.21.2382026-05-24 → 2026-07-28 · 3 obs

○ 2026-05-17 11:58:54
● 2026-05-24 15:48:50
● 2026-07-28 11:22:16

○A162.241.253.1442026-04-22 → 2026-05-17 · 5 obs

○ 2017-08-21 03:54:14
● 2026-04-22 01:43:16
● 2026-05-17 11:58:54
○ 2026-05-24 15:48:50
○ 2026-07-28 11:22:16

●A172.67.201.1072026-05-24 → 2026-07-28 · 3 obs

○ 2026-05-17 11:58:54
● 2026-05-24 15:48:50
● 2026-07-28 11:22:16

●A2606:4700:3030::6815:15ee2026-07-03 → 2026-07-28 · 3 obs

○ 2026-06-14 23:22:56
● 2026-07-03 12:33:38
● 2026-07-28 11:22:16

●A2606:4700:3030::ac43:c96b2026-07-03 → 2026-07-28 · 3 obs

○ 2026-06-14 23:22:56
● 2026-07-03 12:33:38
● 2026-07-28 11:22:16

○A2606:4700:3031::6815:15ee2026-05-24 → 2026-06-14 · 5 obs

○ 2026-05-17 11:58:54
● 2026-05-24 15:48:50
● 2026-06-14 23:22:56
○ 2026-07-03 12:33:38
○ 2026-07-28 11:22:16

○A2606:4700:3033::ac43:c96b2026-05-24 → 2026-06-14 · 5 obs

○ 2026-05-17 11:58:54
● 2026-05-24 15:48:50
● 2026-06-14 23:22:56
○ 2026-07-03 12:33:38
○ 2026-07-28 11:22:16

○A52.200.243.1232016-04-14 → 2016-04-14 · 4 obs

○ 2015-11-10 20:16:44
● 2016-04-14 17:33:12
○ 2016-12-02 03:24:02
○ 2026-07-28 11:22:16

○A54.152.144.2432016-04-14 → 2016-04-14 · 4 obs

○ 2015-11-10 20:16:44
● 2016-04-14 17:33:12
○ 2016-12-02 03:24:02
○ 2026-07-28 11:22:16

○A54.174.31.2542015-11-10 → 2015-11-10 · 4 obs

○ 2015-06-10 13:29:42
● 2015-11-10 20:16:44
○ 2016-04-14 17:33:12
○ 2026-07-28 11:22:16

○A54.208.74.2152015-11-10 → 2015-11-10 · 4 obs

○ 2015-06-10 13:29:42
● 2015-11-10 20:16:44
○ 2016-04-14 17:33:12
○ 2026-07-28 11:22:16

○A54.85.144.1972015-06-10 → 2015-06-10 · 3 obs

● 2015-06-10 13:29:42
○ 2017-08-21 03:54:14
○ 2026-07-28 11:22:16

○A54.85.146.1862015-06-10 → 2015-06-10 · 3 obs

● 2015-06-10 13:29:42
○ 2017-08-21 03:54:14
○ 2026-07-28 11:22:16

○A54.86.217.1322016-12-02 → 2016-12-02 · 4 obs

○ 2016-04-14 17:33:12
● 2016-12-02 03:24:02
○ 2017-08-21 03:54:14
○ 2026-07-28 11:22:16

○A54.88.146.1592016-12-02 → 2016-12-02 · 4 obs

○ 2016-04-14 17:33:12
● 2016-12-02 03:24:02
○ 2017-08-21 03:54:14
○ 2026-07-28 11:22:16

○CNAMEcomingsoon.namebright.com2016-12-02 → 2017-08-21 · 5 obs

○ 2016-04-14 17:33:12
● 2016-12-02 03:24:02
● 2017-08-21 03:54:14
○ 2026-04-22 01:43:16
○ 2026-07-28 11:22:16

○CNAMEhdredirect-lb-399551664.us-east-1.elb.amazonaws.com2015-06-10 → 2016-04-14 · 4 obs

● 2015-06-10 13:29:42
● 2016-04-14 17:33:12
○ 2016-12-02 03:24:02
○ 2026-07-28 11:22:16

○CNAMEnbparking-lb-1977168523.us-east-1.elb.amazonaws.com2016-12-02 → 2016-12-02 · 4 obs

○ 2016-04-14 17:33:12
● 2016-12-02 03:24:02
○ 2017-08-21 03:54:14
○ 2026-07-28 11:22:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	g.gtld-servers.net, b.gtld-servers.net, l.gtld-servers.net, j.gtld-servers.net...	-
coursejet.com	jen.ns.cloudflare.com, salvador.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.194.185

NS records: jen.ns.cloudflare.com, salvador.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coursejet.com (unsigned zone)

⏱️ Timing

Total: 251ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.201.107, 104.21.21.238`
AAAA	2	`2606:4700:3030::6815:15ee, 2606:4700:3030::ac43:c96b`
NS	2	`jen.ns.cloudflare.com, salvador.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	2	`google-site-verification=uEmZg_31GC8wyrC, v=spf1 a mx include:websitewelcome.com ~`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`jen.ns.cloudflare.com dns.cloudflare.com`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

coursejet.com serves as the parent of mail.coursejet.com.

IP Addresses

coursejet.com resolves to four IP addresses: 104.21.21.238, 172.67.201.107, 2606:4700:3030::6815:15ee and 2606:4700:3030::ac43:c96b.

sigmadomainglobal.forum, inguat.gob.gt, mail.sonnikisnov.ru plus two other host names have IP numbers in common with coursejet.com.

Name Servers

Two name servers handle the delegation for coursejet.com: jen.ns.cloudflare.com and salvador.ns.cloudflare.com.

The name server configuration of coursejet.com is shared with other domains, for instance microsofteamz.top, rq-s.com, mutuelle-cpamif.fr and two others.

coursejet.com has at least partial name server overlap with other domains, such as sopinf.com, furrit.us, 192168476.com and two others.

These name servers tend to appear together with the name servers rayden.ns.cloudflare.com, kallie.ns.cloudflare.com and joel.ns.cloudflare.com.

Hosts with 6 IP addresses each:

jen.ns.cloudflare.com resolves to 108.162.194.185, 162.159.38.185 and 172.64.34.185 among others, with 3 other IP addresses in total.

salvador.ns.cloudflare.com resolves to 108.162.195.100, 162.159.44.100 and 172.64.35.100 among others, with 3 other IP addresses in total.

Mail Servers

coursejet.com is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

At least some of the mail servers used by coursejet.com are shared with other domains: exsoinc.com, mbps.net.br, ns500742.ns500742.ns500742.ns500671.ns500742.ns500671.ns500671.ns500678.ns500705.ns500291.ns500291.ns500131.lustychickser.com and two others among them.

It is common to find these mail servers paired with the mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com and aspmx2.googlemail.com, as well as two others.

Host names pointing to two IP addresses:

aspmx.l.google.com resolves to two addresses: 172.253.115.27 and 2607:f8b0:4004:c17::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::1b.

alt3.aspmx.l.google.com resolves to two addresses: 192.178.223.27 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com resolves to two addresses: 172.253.157.27 and 2a00:1450:400c:c23::1b.