`thecourseexplorer.digital`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::6815:2c81^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:c7fc^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.44.129^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.199.252^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`hugh.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b75^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hugh.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c175^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`hugh.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2175^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`hugh.ns.cloudflare.com`
		A	108.162.193.117^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hugh.ns.cloudflare.com`
		A	172.64.33.117^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hugh.ns.cloudflare.com`
		A	173.245.59.117^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hugh.ns.cloudflare.com`
NS	`nena.ns.cloudflare.com`
		A	2606:4700:50::a29f:26a1^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nena.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2a1^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`nena.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22a1^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`nena.ns.cloudflare.com`
		A	108.162.194.161^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nena.ns.cloudflare.com`
		A	162.159.38.161^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nena.ns.cloudflare.com`
		A	172.64.34.161^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nena.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.44.129, 172.67.199.252
		IPv6 hints	2606:4700:3032::6815:2c81, 2606:4700:3035::ac43:c7fc
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=208, name=cloudflare-ech.com
SOA	`hugh.ns.cloudflare.com`dns@cloudflare.com serial=2410072870

`digital`

	DNSSEC	🔒 Signed (DS record present)
	NS	`v0n0.nic.digital` ⭐
	NS	`v0n1.nic.digital`
	NS	`v0n2.nic.digital`
	NS	`v0n3.nic.digital`
	NS	`v2n0.nic.digital`
	NS	`v2n1.nic.digital`
	SOA	`v0n0.nic.digital`hostmaster@donuts.email serial=1785443301

⚠️ On DNS blocklist: tif

Same first word

thecourseexplorer.digital

DNS History

6 records (6 active, 0 former)

●NShugh.ns.cloudflare.com2026-07-28 → 2026-07-30 · 2 obs

● 2026-07-28 12:53:54
● 2026-07-30 20:52:38

●NSnena.ns.cloudflare.com2026-07-28 → 2026-07-30 · 2 obs

● 2026-07-28 12:53:54
● 2026-07-30 20:52:38

●A104.21.44.1292026-07-28 → 2026-07-30 · 2 obs

● 2026-07-28 12:53:54
● 2026-07-30 20:52:38

●A172.67.199.2522026-07-28 → 2026-07-30 · 2 obs

● 2026-07-28 12:53:54
● 2026-07-30 20:52:38

●A2606:4700:3032::6815:2c812026-07-28 → 2026-07-30 · 2 obs

● 2026-07-28 12:53:54
● 2026-07-30 20:52:38

●A2606:4700:3035::ac43:c7fc2026-07-28 → 2026-07-30 · 2 obs

● 2026-07-28 12:53:54
● 2026-07-30 20:52:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
digital	v0n0.nic.digital, v0n1.nic.digital, v0n2.nic.digital, v0n3.nic.digital...	-
thecourseexplorer.digital	hugh.ns.cloudflare.com, nena.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.34.161

NS records: hugh.ns.cloudflare.com, nena.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for thecourseexplorer.digital (unsigned zone)

⏱️ Timing

Total: 1071ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.44.129, 172.67.199.252`
AAAA	2	`2606:4700:3032::6815:2c81, 2606:4700:3035::ac43:c7fc`
NS	2	`hugh.ns.cloudflare.com, nena.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`hugh.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

thecourseexplorer.digital has four IP addresses: 104.21.44.129, 172.67.199.252, 2606:4700:3032::6815:2c81 and 2606:4700:3035::ac43:c7fc.

mail3k.com, ursadev.com, icl-growingsolutions.nl and two other host names share IP numbers with thecourseexplorer.digital.

Name Servers

The NS records for thecourseexplorer.digital delegate to hugh.ns.cloudflare.com and nena.ns.cloudflare.com.

thecourseexplorer.digital uses the same name servers as several other domains — among them booksignificance.click, bookstablecore.digital, bookkindred.click and two more.

thecourseexplorer.digital partially shares its NS delegation with several other domains, including endix.com.mx, ariainsaat.com, chgaj.com and two others.

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

Hostnames that resolve to 6 IP addresses:

hugh.ns.cloudflare.com maps to 108.162.193.117, 172.64.33.117, 173.245.59.117 and 3 additional IP addresses.

nena.ns.cloudflare.com maps to 108.162.194.161, 162.159.38.161, 172.64.34.161 and 3 additional IP addresses.

thecourseexplorer.digital - robtex.com