`serverless-processing-core.courses`

DNSSEC	⚠️ Not signed
A	104.21.87.191^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.145.178^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`raegan.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:269e^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`raegan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c29e^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`raegan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:229e^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`raegan.ns.cloudflare.com`
		A	108.162.194.158^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`raegan.ns.cloudflare.com`
		A	162.159.38.158^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`raegan.ns.cloudflare.com`
		A	172.64.34.158^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`raegan.ns.cloudflare.com`
NS	`roman.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c67^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`roman.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c367^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`roman.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2367^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`roman.ns.cloudflare.com`
		A	108.162.195.103^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`roman.ns.cloudflare.com`
		A	162.159.44.103^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`roman.ns.cloudflare.com`
		A	172.64.35.103^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`roman.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.87.191, 172.67.145.178
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=167, name=cloudflare-ech.com
SOA	`raegan.ns.cloudflare.com`dns@cloudflare.com serial=2404850240

`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=1780690798

⚠️ On DNS blocklist: tif

Subdomains

www.serverless-processing-core.courses

Same first word

serverless-processing-core.courses

DNS History

4 records (4 active, 0 former)

●NSraegan.ns.cloudflare.com2026-05-23 → 2026-06-06 · 2 obs

● 2026-05-23 08:50:34
● 2026-06-06 00:16:52

●NSroman.ns.cloudflare.com2026-05-23 → 2026-06-06 · 2 obs

● 2026-05-23 08:50:34
● 2026-06-06 00:16:52

●A104.21.87.1912026-05-23 → 2026-06-06 · 2 obs

● 2026-05-23 08:50:34
● 2026-06-06 00:16:52

●A172.67.145.1782026-05-23 → 2026-06-06 · 2 obs

● 2026-05-23 08:50:34
● 2026-06-06 00:16:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
courses	z.nic.courses, b.nic.courses, x.nic.courses, y.nic.courses...	12 records
serverless-processing-core.courses	roman.ns.cloudflare.com, raegan.ns.cloudflare.com	-

✅ Authoritative Response

Server:162.159.38.158

NS records: roman.ns.cloudflare.com, raegan.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for serverless-processing-core.courses (unsigned zone)

⏱️ Timing

Total: 2381ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.87.191, 172.67.145.178`
NS	2	`raegan.ns.cloudflare.com, roman.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`raegan.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

www.serverless-processing-core.courses is a subdomain of serverless-processing-core.courses.

IP Addresses

serverless-processing-core.courses points to two IP numbers: 104.21.87.191 and 172.67.145.178.

wavelengthmag.com, itvsat.com, www.csd.go.th plus two other host names have IP numbers in common with serverless-processing-core.courses.

Name Servers

serverless-processing-core.courses is served by two delegated name servers, raegan.ns.cloudflare.com and roman.ns.cloudflare.com.

The name server configuration of serverless-processing-core.courses is shared with other domains, for instance virtualizednetworklab.courses, irretus.com, official-aviator-game-indi.net and two others.

The name servers of serverless-processing-core.courses overlap at least partially with those of other domains — among them brazcom.com.br, pastijp-wso288.sbs, a200m-vip.rest and two more.

These name servers commonly co-occur with the name servers jaziel.ns.cloudflare.com, dayana.ns.cloudflare.com, jill.ns.cloudflare.com and amit.ns.cloudflare.com.

Hosts with 6 IP addresses each:

raegan.ns.cloudflare.com resolves to 108.162.194.158, 162.159.38.158 and 172.64.34.158, along with three other IP addresses.

roman.ns.cloudflare.com resolves to 108.162.195.103, 162.159.44.103 and 172.64.35.103, along with three other IP addresses.

serverless-processing-core.courses - robtex.com