courseapp.com - dns.ninja

`courseapp.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:492c^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::ac43:8c20^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.73.44^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.140.32^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`maleah.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2676^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`maleah.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c276^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`maleah.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2276^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`maleah.ns.cloudflare.com`
		A	108.162.194.118^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`maleah.ns.cloudflare.com`
		A	162.159.38.118^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`maleah.ns.cloudflare.com`
		A	172.64.34.118^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`maleah.ns.cloudflare.com`
NS	`walt.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b94^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`walt.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c194^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`walt.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2194^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`walt.ns.cloudflare.com`
		A	108.162.193.148^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`walt.ns.cloudflare.com`
		A	172.64.33.148^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`walt.ns.cloudflare.com`
		A	173.245.59.148^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`walt.ns.cloudflare.com`
MX	`courseapp-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca0b::^{🇬🇧 Microsoft2a01:111:f000::/36}
			PTR	`mail-lo2p265cu02300.inbound.protection.outlook.com`
		A	2a01:111:f403:ca0b::1^{🇬🇧 Microsoft2a01:111:f000::/36}
			PTR	`mail-lo3p265cu00301.inbound.protection.outlook.com`
		A	2a01:111:f403:ca0b::2^{🇬🇧 Microsoft2a01:111:f000::/36}
			PTR	`mail-lo0p265cu00202.inbound.protection.outlook.com`
		A	2a01:111:f403:ca1a::1^{🇬🇧 Microsoft2a01:111:f000::/36}
			PTR	`mail-cwxp265cu00601.inbound.protection.outlook.com`
		A	52.101.89.0^{🇬🇧 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-lo2p265cu02300.inbound.protection.outlook.com`
		A	52.101.89.2^{🇬🇧 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-lo3p265cu00302.inbound.protection.outlook.com`
		A	52.101.99.0^{🇬🇧 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-cwxp265cu00600.inbound.protection.outlook.com`
		A	52.101.99.2^{🇬🇧 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-cwxp265cu00502.inbound.protection.outlook.com`
TXT	`MS=ms87134365`
TXT	`MS=ms90939751`
TXT	`google-site-verification=KjAct9yKIIT4DKeCBBOrM1erHVP93C4-Jci3rq1hk9M`
TXT	`v=spf1 a mx include:spf.protection.outlook.com +ip4 -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.73.44, 172.67.140.32
		IPv6 hints	2606:4700:3031::6815:492c, 2606:4700:3034::ac43:8c20
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=129, name=cloudflare-ech.com
SOA	`maleah.ns.cloudflare.com`dns@cloudflare.com serial=2406178900

`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=1783218011

Same first word

courseapp.com

Similar names

DNS History

16 records (7 active, 9 former)

○NSdns10.copyleft.no2015-05-15 → 2016-07-05 · 4 obs

● 2015-05-15 22:10:46
● 2016-07-05 15:53:08
○ 2026-02-15 03:17:08
○ 2026-07-05 02:31:50

○NSdns11.copyleft.no2015-05-15 → 2016-07-05 · 4 obs

● 2015-05-15 22:10:46
● 2016-07-05 15:53:08
○ 2026-02-15 03:17:08
○ 2026-07-05 02:31:50

○NSdns12.copyleft.no2015-05-15 → 2016-07-05 · 4 obs

● 2015-05-15 22:10:46
● 2016-07-05 15:53:08
○ 2026-02-15 03:17:08
○ 2026-07-05 02:31:50

●NSmaleah.ns.cloudflare.com2026-02-15 → 2026-07-05 · 3 obs

○ 2016-07-05 15:53:08
● 2026-02-15 03:17:08
● 2026-07-05 02:31:50

●NSwalt.ns.cloudflare.com2026-02-15 → 2026-07-05 · 3 obs

○ 2016-07-05 15:53:08
● 2026-02-15 03:17:08
● 2026-07-05 02:31:50

●MXcourseapp-com.mail.protection.outlook.com2026-02-15 → 2026-07-05 · 3 obs

○ 2016-07-05 15:53:08
● 2026-02-15 03:17:08
● 2026-07-05 02:31:50

○MXmailnull.courseapp.com2015-05-15 → 2016-07-05 · 4 obs

● 2015-05-15 22:10:46
● 2016-07-05 15:53:08
○ 2026-02-15 03:17:08
○ 2026-07-05 02:31:50

●A104.21.73.442026-02-15 → 2026-07-05 · 7 obs

○ 2016-07-05 15:53:08
● 2026-02-15 03:17:08
○ 2026-02-15 19:02:52
● 2026-02-21 21:46:04
○ 2026-03-12 10:25:14
● 2026-03-24 10:13:32
● 2026-07-05 02:31:50

●A172.67.140.322026-02-15 → 2026-07-05 · 7 obs

○ 2016-07-05 15:53:08
● 2026-02-15 03:17:08
○ 2026-02-15 19:02:52
● 2026-02-21 21:46:04
○ 2026-03-12 10:25:14
● 2026-03-24 10:13:32
● 2026-07-05 02:31:50

○A188.114.96.02026-02-15 → 2026-03-12 · 6 obs

○ 2026-02-15 03:17:08
● 2026-02-15 19:02:52
○ 2026-02-21 21:46:04
● 2026-03-12 10:25:14
○ 2026-03-24 10:13:32
○ 2026-07-05 02:31:50

○A188.114.97.02026-02-15 → 2026-03-12 · 6 obs

○ 2026-02-15 03:17:08
● 2026-02-15 19:02:52
○ 2026-02-21 21:46:04
● 2026-03-12 10:25:14
○ 2026-03-24 10:13:32
○ 2026-07-05 02:31:50

○A188.94.218.2382015-05-15 → 2016-07-05 · 4 obs

● 2015-05-15 22:10:46
● 2016-07-05 15:53:08
○ 2026-02-15 03:17:08
○ 2026-07-05 02:31:50

●A2606:4700:3031::6815:492c2026-02-15 → 2026-07-05 · 7 obs

○ 2016-07-05 15:53:08
● 2026-02-15 03:17:08
○ 2026-02-15 19:02:52
● 2026-02-21 21:46:04
○ 2026-03-12 10:25:14
● 2026-03-24 10:13:32
● 2026-07-05 02:31:50

●A2606:4700:3034::ac43:8c202026-02-15 → 2026-07-05 · 7 obs

○ 2016-07-05 15:53:08
● 2026-02-15 03:17:08
○ 2026-02-15 19:02:52
● 2026-02-21 21:46:04
○ 2026-03-12 10:25:14
● 2026-03-24 10:13:32
● 2026-07-05 02:31:50

○A2a06:98c1:3120::2026-02-15 → 2026-03-12 · 6 obs

○ 2026-02-15 03:17:08
● 2026-02-15 19:02:52
○ 2026-02-21 21:46:04
● 2026-03-12 10:25:14
○ 2026-03-24 10:13:32
○ 2026-07-05 02:31:50

○A2a06:98c1:3121::2026-02-15 → 2026-03-12 · 6 obs

○ 2026-02-15 03:17:08
● 2026-02-15 19:02:52
○ 2026-02-21 21:46:04
● 2026-03-12 10:25:14
○ 2026-03-24 10:13:32
○ 2026-07-05 02:31:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, f.gtld-servers.net, a.gtld-servers.net, j.gtld-servers.net...	-
courseapp.com	walt.ns.cloudflare.com, maleah.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.194.118

NS records: walt.ns.cloudflare.com, maleah.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for courseapp.com (unsigned zone)

⏱️ Timing

Total: 614ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.73.44, 172.67.140.32`
AAAA	2	`2606:4700:3034::ac43:8c20, 2606:4700:3031::6815:492c`
NS	2	`maleah.ns.cloudflare.com, walt.ns.cloudflare.com`
MX	1	`courseapp-com.mail.protection.outlook.co`
TXT	4	`MS=ms87134365, MS=ms90939751...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`maleah.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

courseapp.com has four IP addresses: 104.21.73.44, 172.67.140.32, 2606:4700:3031::6815:492c and 2606:4700:3034::ac43:8c20.

Among the host names that share IP numbers with courseapp.com are www.live-kooora.one, offrizo.shop, letsbuypropertymalaysia.com and two others.

Name Servers

courseapp.com is delegated to two name servers: maleah.ns.cloudflare.com and walt.ns.cloudflare.com.

courseapp.com has the same name server delegation as a number of other domains, such as slrastreamento24h.com.br, olles.org, ysabeau.com and two more.

courseapp.com shares at least some of its name servers with other domains, including ntnhz.com, rightway.ie, johnliudk.com and two others.

These name servers are frequently seen alongside the name servers ray.ns.cloudflare.com, santino.ns.cloudflare.com, kiki.ns.cloudflare.com and dara.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

maleah.ns.cloudflare.com resolves to 108.162.194.118, 162.159.38.118, 172.64.34.118 and 3 other IP addresses.

walt.ns.cloudflare.com resolves to 108.162.193.148, 172.64.33.148, 173.245.59.148 and 3 other IP addresses.

Mail Servers

courseapp.com routes its mail through a single mail server, courseapp-com.mail.protection.outlook.com.

courseapp-com.mail.protection.outlook.com directs to 8 IP numbers, including 52.101.89.0, 52.101.89.2 and 52.101.99.0, along with 5 other.