`federatedsyncframework.courses`

DNSSEC	⚠️ Not signed
A	104.21.12.201^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.132.101^{🇺🇸 Cloudflare172.67.128.0/20 , 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	104.21.12.201, 172.67.132.101
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=82, name=cloudflare-ech.com
SOA	`raegan.ns.cloudflare.com`dns@cloudflare.com serial=2404776325

`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=1782257346

⚠️ On DNS blocklist: tif

Subdomains

www.federatedsyncframework.courses

Same first word

federatedsyncframework.courses

DNS History

4 records (4 active, 0 former)

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

● 2026-05-23 12:32:16
● 2026-06-23 23:36:20

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

● 2026-05-23 12:32:16
● 2026-06-23 23:36:20

●A104.21.12.2012026-05-23 → 2026-06-23 · 2 obs

● 2026-05-23 12:32:16
● 2026-06-23 23:36:20

●A172.67.132.1012026-05-23 → 2026-06-23 · 2 obs

● 2026-05-23 12:32:16
● 2026-06-23 23:36:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
courses	a.nic.courses, b.nic.courses, c.nic.courses, x.nic.courses...	12 records
federatedsyncframework.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 federatedsyncframework.courses (unsigned zone)

⏱️ Timing

Total: 714ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.132.101, 104.21.12.201`
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 (a.nic.courses, b.nic.courses, c.nic.courses...)

Analysis

Hierarchy

The domain www.federatedsyncframework.courses falls under the parent federatedsyncframework.courses.

IP Addresses

federatedsyncframework.courses has two IP addresses: 104.21.12.201 and 172.67.132.101

www.federatedsyncframework.courses, leckermann.at, sibunhill.com and two other host names share IP numbers with federatedsyncframework.courses.

Name Servers

federatedsyncframework.courses is delegated to two name servers: raegan.ns.cloudflare.com and roman.ns.cloudflare.com.

federatedsyncframework.courses uses the same name servers as several other domains — among them linuxmail.in, virtualizednetworklab.courses, irretus.com and two more.

At least some of federatedsyncframework.courses's name servers are shared with other domains, for example deepdyve.com, bioclinicalservices.com, minegram.com and two more.

It is common for these name servers to be used in conjunction with the name servers jaziel.ns.cloudflare.com, jill.ns.cloudflare.com and amit.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

raegan.ns.cloudflare.com resolves to 108.162.194.158, 162.159.38.158, 172.64.34.158 and 3 other IP addresses.

roman.ns.cloudflare.com resolves to 108.162.195.103, 162.159.44.103, 172.64.35.103 and 3 other IP addresses.

federatedsyncframework.courses - robtex.com