`knowledgpin.courses`

DNSSEC	⚠️ Not signed
A	104.21.13.85^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.132.164^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`jason.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3bb3^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jason.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1b3^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jason.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21b3^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jason.ns.cloudflare.com`
		A	108.162.193.179^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jason.ns.cloudflare.com`
		A	172.64.33.179^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jason.ns.cloudflare.com`
		A	173.245.59.179^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jason.ns.cloudflare.com`
NS	`meiling.ns.cloudflare.com`
		A	2606:4700:50::a29f:26fe^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`meiling.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2fe^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`meiling.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22fe^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`meiling.ns.cloudflare.com`
		A	108.162.194.254^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`meiling.ns.cloudflare.com`
		A	162.159.38.254^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`meiling.ns.cloudflare.com`
		A	172.64.34.254^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`meiling.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.13.85, 172.67.132.164
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=80, name=cloudflare-ech.com
SOA	`jason.ns.cloudflare.com`dns@cloudflare.com serial=2409366395

`courses`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.nic.courses` ⭐
	NS	`b.nic.courses`
	NS	`c.nic.courses`
	NS	`x.nic.courses`
	NS	`y.nic.courses`
	NS	`z.nic.courses`
	SOA	`a.nic.courses`admin@tldns.godaddy serial=1784436099

⚠️ On DNS blocklist: tif

Subdomains

www.knowledgpin.courses

Same first word

knowledgpin.courses

DNS History

4 records (4 active, 0 former)

●NSjason.ns.cloudflare.com2026-05-23 → 2026-07-19 · 2 obs

● 2026-05-23 06:18:42
● 2026-07-19 04:55:06

●NSmeiling.ns.cloudflare.com2026-05-23 → 2026-07-19 · 2 obs

● 2026-05-23 06:18:42
● 2026-07-19 04:55:06

●A104.21.13.852026-05-23 → 2026-07-19 · 2 obs

● 2026-05-23 06:18:42
● 2026-07-19 04:55:06

●A172.67.132.1642026-05-23 → 2026-07-19 · 2 obs

● 2026-05-23 06:18:42
● 2026-07-19 04:55:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
courses	z.nic.courses, x.nic.courses, b.nic.courses, a.nic.courses...	12 records
knowledgpin.courses	jason.ns.cloudflare.com, meiling.ns.cloudflare.com	-

✅ Authoritative Response

Server:162.159.38.254

NS records: jason.ns.cloudflare.com, meiling.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for knowledgpin.courses (unsigned zone)

⏱️ Timing

Total: 505ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.13.85, 172.67.132.164`
NS	2	`jason.ns.cloudflare.com, meiling.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`jason.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (a.nic.courses, b.nic.courses, c.nic.courses...)

Analysis

Hierarchy

knowledgpin.courses serves as the parent of www.knowledgpin.courses.

IP Addresses

knowledgpin.courses resolves to the IP addresses 104.21.13.85 and 172.67.132.164

Among the host names that share IP numbers with knowledgpin.courses are www.agnittiinsurance.com, grupopixan.com.mx, cozecoe.com and two others.

Name Servers

DNS delegation for knowledgpin.courses points to two name servers: jason.ns.cloudflare.com and meiling.ns.cloudflare.com.

knowledgpin.courses has the same name server delegation as a number of other domains, such as it-securityguard.com, loadpaper.com, usonyc.org and two more.

knowledgpin.courses has at least partial name server overlap with other domains, such as nicobags.com, technostolic.com, inn-azores.com and two others.

These name servers are routinely co-deployed with the name servers vasilii.ns.cloudflare.com, magdalena.ns.cloudflare.com, nash.ns.cloudflare.com and two others.

Host names resolving to 6 IP numbers:

jason.ns.cloudflare.com has IP addresses 108.162.193.179, 172.64.33.179 and 173.245.59.179, plus 3 other.

meiling.ns.cloudflare.com has IP addresses 108.162.194.254, 162.159.38.254 and 172.64.34.254, plus 3 other.

knowledgpin.courses - robtex.com