4o.jectuk.courses - robtex.com
4o.jectuk.courses
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3031::6815:35cf🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3032::ac43:dab4🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.53.207Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.218.180🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.53.207, 172.67.218.180 | ||||||
| IPv6 hints | 2606:4700:3031::6815:35cf, 2606:4700:3032::ac43:dab4 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=112, name=cloudflare-ech.com | ||||||
jectuk.courses
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3031::6815:35cf🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3032::ac43:dab4🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.53.207Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.218.180🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | ariadne.ns.cloudflare.com ⭐ | ||||||
| NS | todd.ns.cloudflare.com | ||||||
| TXT | google-site-verification=4SAVidVyRERZnz29Bz8p9vvv1Q0Wf05eoo4Xm2FOuwQ | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.53.207, 172.67.218.180 | ||||||
| IPv6 hints | 2606:4700:3031::6815:35cf, 2606:4700:3032::ac43:dab4 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=112, name=cloudflare-ech.com | ||||||
| SOA | ariadne.ns.cloudflare.comdns@cloudflare.com serial=2398888674 | ||||||
⚠️ On DNS blocklist: tif
Same first word
Similar names
o4.eu |
o4.ru |
o4.nl |
o4.cn |
o4.fi |
o4.com.br |
o4.se |
o4.com.au |
o4.be |
o4.hu |
o4.company |
o4.network |
o4.no |
o4.de |
o4.org |
o4.pl |
o4.com |
o4.dk |
o4.ro |
o4.su |
o4.cz |
DNS History
4 records (4 active, 0 former)
●A104.21.53.2072026-03-28 → 2026-04-14 · 2 obs
● 2026-03-28 02:07:00
● 2026-04-14 08:43:28
● 2026-04-14 08:43:28
●A172.67.218.1802026-03-28 → 2026-04-14 · 2 obs
● 2026-03-28 02:07:00
● 2026-04-14 08:43:28
● 2026-04-14 08:43:28
●A2606:4700:3031::6815:35cf2026-03-28 → 2026-04-14 · 2 obs
● 2026-03-28 02:07:00
● 2026-04-14 08:43:28
● 2026-04-14 08:43:28
●A2606:4700:3032::ac43:dab42026-03-28 → 2026-04-14 · 2 obs
● 2026-03-28 02:07:00
● 2026-04-14 08:43:28
● 2026-04-14 08:43:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| courses | a.nic.courses, b.nic.courses, c.nic.courses, x.nic.courses... | 12 records |
| jectuk.courses | todd.ns.cloudflare.com, ariadne.ns.cloudflare.com | - |
✅ Authoritative Response
Server:108.162.194.225
NS records: todd.ns.cloudflare.com, ariadne.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for jectuk.courses (unsigned zone)
⏱️ Timing
Total: 524ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.218.180, 104.21.53.207 |
| AAAA | 2 | 2606:4700:3031::6815:35cf, 2606:4700:3032::ac43:dab4 |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
📌 Glue Records Collected
Total: 12
In-bailiwick: 12 (a.nic.courses, a.nic.courses, b.nic.courses...)
Analysis
IP Addresses
4o.jectuk.courses points to four IP numbers: 2606:4700:3031::6815:35cf, 2606:4700:3032::ac43:dab4, 104.21.53.207 and 172.67.218.180.
Other host names, for instance ivanti.pl, 9pg88.com, nhlbite.my, xuedx.cn and intmag.org share IP numbers with 4o.jectuk.courses.