virtualizednetworklab.courses - dns.ninja
virtualizednetworklab.courses
| DNSSEC | ⚠️ Not signed | ||||||
| A | 104.21.7.153Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.130.82🇺🇸 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 | 162.159.38.158Cloudflare162.159.32.0/20 , 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 | 162.159.44.103Cloudflare162.159.32.0/20 , 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 | 104.21.7.153, 172.67.130.82 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=113, name=cloudflare-ech.com | ||||||
| SOA | raegan.ns.cloudflare.comdns@cloudflare.com serial=2409443766 | ||||||
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.coursesadmin@tldns.godaddy serial=1784934757 | ||||||
Subdomains
www.virtualizednetworklab.courses |
Same first word
virtualizednetworklab.courses |
DNS History
4 records (4 active, 0 former)
●NSraegan.ns.cloudflare.com2026-05-23 → 2026-07-24 · 2 obs
● 2026-07-24 23:19:46
●NSroman.ns.cloudflare.com2026-05-23 → 2026-07-24 · 2 obs
● 2026-07-24 23:19:46
●A104.21.7.1532026-05-23 → 2026-07-24 · 2 obs
● 2026-07-24 23:19:46
●A172.67.130.822026-05-23 → 2026-07-24 · 2 obs
● 2026-07-24 23:19:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| courses | x.nic.courses, z.nic.courses, a.nic.courses, c.nic.courses... | 12 records |
| virtualizednetworklab.courses | roman.ns.cloudflare.com, raegan.ns.cloudflare.com | - |
✅ Authoritative Response
Server:172.64.35.103
NS records: roman.ns.cloudflare.com, raegan.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for virtualizednetworklab.courses (unsigned zone)
⏱️ Timing
Total: 474ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.130.82, 104.21.7.153 |
| 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
www.virtualizednetworklab.courses is a subdomain of virtualizednetworklab.courses.
IP Addresses
virtualizednetworklab.courses has two IP addresses: 104.21.7.153 and 172.67.130.82
296ll.com, soundserum.com, praxiscentralpartners.click and two other host names share IP numbers with virtualizednetworklab.courses.
Name Servers
virtualizednetworklab.courses uses two name servers for its delegation: raegan.ns.cloudflare.com and roman.ns.cloudflare.com.
virtualizednetworklab.courses uses the same name servers as several other domains — among them sciencebasedswimming.com, linuxmail.in, irretus.com and two more.
The name servers of virtualizednetworklab.courses overlap at least partially with those of other domains — among them osten.es, guglielmo.ws, profiadatvedelem.hu and two more.
The name servers jaziel.ns.cloudflare.com, amalia.ns.cloudflare.com and dayana.ns.cloudflare.com are commonly seen alongside these name servers.
Hostnames that resolve to 6 IP addresses:
Hostname raegan.ns.cloudflare.com directs to 108.162.194.158, 162.159.38.158 and 172.64.34.158 along with 3 other IP addresses.
Hostname roman.ns.cloudflare.com directs to 108.162.195.103, 162.159.44.103 and 172.64.35.103 along with 3 other IP addresses.