🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`structcourses.pro`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:198d^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:864b^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.25.141^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.134.75^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`nadia.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3acf^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nadia.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0cf^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`nadia.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20cf^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`nadia.ns.cloudflare.com`
		A	108.162.192.207^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nadia.ns.cloudflare.com`
		A	172.64.32.207^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nadia.ns.cloudflare.com`
		A	173.245.58.207^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nadia.ns.cloudflare.com`
NS	`rodney.ns.cloudflare.com`
		A	2606:4700:58::adf5:3be4^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rodney.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1e4^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`rodney.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21e4^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`rodney.ns.cloudflare.com`
		A	108.162.193.228^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rodney.ns.cloudflare.com`
		A	172.64.33.228^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rodney.ns.cloudflare.com`
		A	173.245.59.228^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rodney.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.25.141, 172.67.134.75
		IPv6 hints	2606:4700:3033::6815:198d, 2606:4700:3037::ac43:864b
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=117, name=cloudflare-ech.com
SOA	`nadia.ns.cloudflare.com`dns@cloudflare.com serial=2416456762

`pro`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.pro.afilias-nst.info` ⭐
	NS	`a2.pro.afilias-nst.info`
	NS	`b0.pro.afilias-nst.org`
	NS	`b2.pro.afilias-nst.org`
	NS	`c0.pro.afilias-nst.info`
	NS	`d0.pro.afilias-nst.org`
	SOA	`a0.pro.afilias-nst.info`hostmaster@donuts.email serial=1794135787

Same first word

structcourses.pro

Previous names

Next names

DNS History

10 records (6 active, 4 former)

●NSnadia.ns.cloudflare.com2026-08-30 → 2026-11-08 · 2 obs

● 2026-08-30 13:44:44
● 2026-11-08 11:09:58

●NSrodney.ns.cloudflare.com2026-08-30 → 2026-11-08 · 2 obs

● 2026-08-30 13:44:44
● 2026-11-08 11:09:58

●A104.21.25.1412026-09-06 → 2026-11-08 · 7 obs

○ 2026-08-30 13:44:44
● 2026-09-06 20:21:00
○ 2026-09-17 08:19:10
● 2026-09-24 10:01:00
○ 2026-09-26 04:17:40
● 2026-10-03 04:10:10
● 2026-11-08 11:09:58

●A172.67.134.752026-09-06 → 2026-11-08 · 7 obs

○ 2026-08-30 13:44:44
● 2026-09-06 20:21:00
○ 2026-09-17 08:19:10
● 2026-09-24 10:01:00
○ 2026-09-26 04:17:40
● 2026-10-03 04:10:10
● 2026-11-08 11:09:58

○A188.114.96.02026-08-30 → 2026-09-26 · 7 obs

● 2026-08-30 13:44:44
○ 2026-09-06 20:21:00
● 2026-09-17 08:19:10
○ 2026-09-24 10:01:00
● 2026-09-26 04:17:40
○ 2026-10-03 04:10:10
○ 2026-11-08 11:09:58

○A188.114.97.02026-08-30 → 2026-09-26 · 7 obs

● 2026-08-30 13:44:44
○ 2026-09-06 20:21:00
● 2026-09-17 08:19:10
○ 2026-09-24 10:01:00
● 2026-09-26 04:17:40
○ 2026-10-03 04:10:10
○ 2026-11-08 11:09:58

●A2606:4700:3033::6815:198d2026-09-06 → 2026-11-08 · 7 obs

○ 2026-08-30 13:44:44
● 2026-09-06 20:21:00
○ 2026-09-17 08:19:10
● 2026-09-24 10:01:00
○ 2026-09-26 04:17:40
● 2026-10-03 04:10:10
● 2026-11-08 11:09:58

●A2606:4700:3037::ac43:864b2026-09-06 → 2026-11-08 · 7 obs

○ 2026-08-30 13:44:44
● 2026-09-06 20:21:00
○ 2026-09-17 08:19:10
● 2026-09-24 10:01:00
○ 2026-09-26 04:17:40
● 2026-10-03 04:10:10
● 2026-11-08 11:09:58

○A2a06:98c1:3120::2026-08-30 → 2026-09-26 · 7 obs

● 2026-08-30 13:44:44
○ 2026-09-06 20:21:00
● 2026-09-17 08:19:10
○ 2026-09-24 10:01:00
● 2026-09-26 04:17:40
○ 2026-10-03 04:10:10
○ 2026-11-08 11:09:58

○A2a06:98c1:3121::2026-08-30 → 2026-09-26 · 7 obs

● 2026-08-30 13:44:44
○ 2026-09-06 20:21:00
● 2026-09-17 08:19:10
○ 2026-09-24 10:01:00
● 2026-09-26 04:17:40
○ 2026-10-03 04:10:10
○ 2026-11-08 11:09:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
pro	d0.pro.afilias-nst.org, b2.pro.afilias-nst.org, a2.pro.afilias-nst.info, a0.pro.afilias-nst.info...	12 records
structcourses.pro	rodney.ns.cloudflare.com, nadia.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.207

NS records: rodney.ns.cloudflare.com, nadia.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for structcourses.pro (unsigned zone)

⏱️ Timing

Total: 664ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.134.75, 104.21.25.141`
AAAA	2	`2606:4700:3033::6815:198d, 2606:4700:3037::ac43:864b`
NS	2	`nadia.ns.cloudflare.com, rodney.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`nadia.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (d0.pro.afilias-nst.org, c0.pro.afilias-nst.info, b2.pro.afilias-nst.org...)

Analysis

IP Addresses

structcourses.pro directs to four IP numbers, which are 104.21.25.141, 172.67.134.75, 2606:4700:3033::6815:198d and 2606:4700:3037::ac43:864b.

Two other host names, along with tos-168.co, dd77.bar and barton.net.pl, also share IP numbers with structcourses.pro.

Name Servers

DNS delegation for structcourses.pro points to two name servers: nadia.ns.cloudflare.com and rodney.ns.cloudflare.com.

structcourses.pro shares its NS records with other domains, for example davesnider.com, dairemcepte-frontend-stage.pages.dev, 1772444078.workers.dev and two others.

The name servers of structcourses.pro overlap at least partially with those of other domains — among them super-wiki.win, miqyas-preview.pages.dev, pt1paragmatix.monster and two more.

The name servers barbara.ns.cloudflare.com, sri.ns.cloudflare.com and stan.ns.cloudflare.com are commonly seen alongside these name servers.

DNS names with 6 IP addresses:

nadia.ns.cloudflare.com has IP addresses 108.162.192.207, 172.64.32.207 and 173.245.58.207, plus 3 other.

rodney.ns.cloudflare.com has IP addresses 108.162.193.228, 172.64.33.228 and 173.245.59.228, plus 3 other.

structcourses.pro - robtex.com