`flexicourses.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:9be7^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::6815:510d^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.81.13^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.155.231^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`anuj.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b41^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`anuj.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c141^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`anuj.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2141^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`anuj.ns.cloudflare.com`
		A	108.162.193.65^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`anuj.ns.cloudflare.com`
		A	172.64.33.65^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`anuj.ns.cloudflare.com`
		A	173.245.59.65^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`anuj.ns.cloudflare.com`
NS	`mina.ns.cloudflare.com`
		A	2606:4700:50::a29f:26fb^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mina.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2fb^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`mina.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22fb^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`mina.ns.cloudflare.com`
		A	108.162.194.251^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mina.ns.cloudflare.com`
		A	162.159.38.251^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mina.ns.cloudflare.com`
		A	172.64.34.251^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mina.ns.cloudflare.com`
MX	`mx.stackmail.com` ⭐
		A	185.151.28.67^{🇬🇧 TWENTYI185.151.28.0/24}
			PTR	`mx.stackmail.com`
TXT	`google-site-verification=RgfwmsCA58TL8sCHeCFI3kvD-nW0WibGmP-UgKoBNyU`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.81.13, 172.67.155.231
		IPv6 hints	2606:4700:3030::ac43:9be7, 2606:4700:3031::6815:510d
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=111, name=cloudflare-ech.com
SOA	`anuj.ns.cloudflare.com`dns@cloudflare.com serial=2410480920

`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=1785730772

📈 Tranco rank: #863,562

Subdomains

www.flexicourses.com

Same first word

flexicourses.com

DNS History

19 records (7 active, 12 former)

●NSanuj.ns.cloudflare.com2026-05-12 → 2026-08-03 · 3 obs

○ 2020-01-04 05:58:50
● 2026-05-12 05:39:30
● 2026-08-03 04:35:06

●NSmina.ns.cloudflare.com2026-05-12 → 2026-08-03 · 3 obs

○ 2020-01-04 05:58:50
● 2026-05-12 05:39:30
● 2026-08-03 04:35:06

○NSns61.1and1.fr2015-06-11 → 2015-06-11 · 3 obs

● 2015-06-11 05:32:26
○ 2016-02-26 12:56:26
○ 2026-08-03 04:35:06

○NSns62.1and1.fr2015-06-11 → 2015-06-11 · 3 obs

● 2015-06-11 05:32:26
○ 2016-02-26 12:56:26
○ 2026-08-03 04:35:06

○NSns77.domaincontrol.com2017-02-13 → 2017-02-13 · 4 obs

○ 2016-02-26 12:56:26
● 2017-02-13 06:34:32
○ 2020-01-04 05:58:50
○ 2026-08-03 04:35:06

○NSns78.domaincontrol.com2017-02-13 → 2017-02-13 · 4 obs

○ 2016-02-26 12:56:26
● 2017-02-13 06:34:32
○ 2020-01-04 05:58:50
○ 2026-08-03 04:35:06

○MXmailstore1.secureserver.net2017-02-13 → 2017-02-13 · 4 obs

○ 2016-02-26 12:56:26
● 2017-02-13 06:34:32
○ 2020-01-04 05:58:50
○ 2026-08-03 04:35:06

●MXmx.stackmail.com2026-05-12 → 2026-08-03 · 3 obs

○ 2020-01-04 05:58:50
● 2026-05-12 05:39:30
● 2026-08-03 04:35:06

○MXmx00.1and1.fr2015-06-11 → 2015-06-11 · 3 obs

● 2015-06-11 05:32:26
○ 2016-02-26 12:56:26
○ 2026-08-03 04:35:06

○MXmx01.1and1.fr2015-06-11 → 2015-06-11 · 3 obs

● 2015-06-11 05:32:26
○ 2016-02-26 12:56:26
○ 2026-08-03 04:35:06

○MXsmtp.secureserver.net2017-02-13 → 2017-02-13 · 4 obs

○ 2016-02-26 12:56:26
● 2017-02-13 06:34:32
○ 2020-01-04 05:58:50
○ 2026-08-03 04:35:06

●A104.21.81.132026-05-12 → 2026-08-03 · 3 obs

○ 2020-01-04 05:58:50
● 2026-05-12 05:39:30
● 2026-08-03 04:35:06

●A172.67.155.2312026-05-12 → 2026-08-03 · 3 obs

○ 2020-01-04 05:58:50
● 2026-05-12 05:39:30
● 2026-08-03 04:35:06

○A217.160.159.552015-06-11 → 2015-06-11 · 3 obs

● 2015-06-11 05:32:26
○ 2016-02-26 12:56:26
○ 2026-08-03 04:35:06

●A2606:4700:3030::ac43:9be72026-07-16 → 2026-08-03 · 3 obs

○ 2026-06-10 04:17:44
● 2026-07-16 01:04:26
● 2026-08-03 04:35:06

●A2606:4700:3031::6815:510d2026-07-16 → 2026-08-03 · 3 obs

○ 2026-06-10 04:17:44
● 2026-07-16 01:04:26
● 2026-08-03 04:35:06

○A2606:4700:3032::6815:510d2026-05-12 → 2026-06-10 · 5 obs

○ 2020-01-04 05:58:50
● 2026-05-12 05:39:30
● 2026-06-10 04:17:44
○ 2026-07-16 01:04:26
○ 2026-08-03 04:35:06

○A2606:4700:3037::ac43:9be72026-05-12 → 2026-06-10 · 5 obs

○ 2020-01-04 05:58:50
● 2026-05-12 05:39:30
● 2026-06-10 04:17:44
○ 2026-07-16 01:04:26
○ 2026-08-03 04:35:06

○A50.63.202.482017-02-13 → 2017-02-13 · 4 obs

○ 2016-02-26 12:56:26
● 2017-02-13 06:34:32
○ 2020-01-04 05:58:50
○ 2026-08-03 04:35:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
flexicourses.com	anuj.ns.cloudflare.com, mina.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.65

NS records: anuj.ns.cloudflare.com, mina.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for flexicourses.com (unsigned zone)

⏱️ Timing

Total: 303ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.81.13, 172.67.155.231`
AAAA	2	`2606:4700:3031::6815:510d, 2606:4700:3030::ac43:9be7`
NS	2	`anuj.ns.cloudflare.com, mina.ns.cloudflare.com`
MX	1	`mx.stackmail.com (pri: 10)`
TXT	1	`google-site-verification=RgfwmsCA58TL8sC`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`anuj.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

www.flexicourses.com is a subdomain of flexicourses.com.

IP Addresses

flexicourses.com directs to four IP numbers, which are 104.21.81.13, 172.67.155.231, 2606:4700:3030::ac43:9be7 and 2606:4700:3031::6815:510d.

Additional host names — ioluo.com, plinkdeal.rest, acepalace.us and two others — share IP numbers with flexicourses.com.

Name Servers

The NS records for flexicourses.com delegate to anuj.ns.cloudflare.com and mina.ns.cloudflare.com.

flexicourses.com shares its name server setup with other domains, including cutedigitalnook.com, biblb.com, lsbr.uk and two others.

The name servers of flexicourses.com overlap at least partially with those of other domains — among them trusthubhealth.net, rmhc-swo.ca, go88.gifts and two more.

These name servers commonly appear in combination with the name servers hope.ns.cloudflare.com.

Host names with 6 IP numbers:

anuj.ns.cloudflare.com maps to 108.162.193.65, 172.64.33.65, 173.245.59.65 and 3 additional IP addresses.

mina.ns.cloudflare.com maps to 108.162.194.251, 162.159.38.251, 172.64.34.251 and 3 additional IP addresses.

Mail Servers

flexicourses.com has one mail server: mx.stackmail.com.

flexicourses.com shares the same mail server setup as other domains, including nomadedesign.com, triple-mshop.org, istanbulermenivakiflari.org and two others.

flexicourses.com has mail servers in common with other domains — alohamagic.com being one example.

mx.stackmail.com resolves to 185.151.28.67 and no other IP number.

flexicourses.com - robtex.com