linfxuh.courses - robtex.com
linfxuh.courses
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3030::6815:8b5🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3032::ac43:9da3🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.8.181Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.157.163🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | anita.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::a29f:2652🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | anita.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c252🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | anita.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2252🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | anita.ns.cloudflare.com | ||||||
| A | 108.162.194.82🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | anita.ns.cloudflare.com | ||||||
| A | 162.159.38.82Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | anita.ns.cloudflare.com | ||||||
| A | 172.64.34.82🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | anita.ns.cloudflare.com | ||||||
| NS | theo.ns.cloudflare.com | ||||||
| A | 2606:4700:58::adf5:3b90🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | theo.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c190🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | theo.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2190🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | theo.ns.cloudflare.com | ||||||
| A | 108.162.193.144🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | theo.ns.cloudflare.com | ||||||
| A | 172.64.33.144🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | theo.ns.cloudflare.com | ||||||
| A | 173.245.59.144🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | theo.ns.cloudflare.com | ||||||
| TXT | google-site-verification=gey9dIm04uxpE_4sji_qnj_WP2BNj8Xx6qrFUtHnNIg | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.8.181, 172.67.157.163 | ||||||
| IPv6 hints | 2606:4700:3030::6815:8b5, 2606:4700:3032::ac43:9da3 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=144, name=cloudflare-ech.com | ||||||
| SOA | anita.ns.cloudflare.comdns@cloudflare.com serial=2405625831 | ||||||
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=1780738367 | ||||||
Same first word
linfxuh.courses |
DNS History
6 records (6 active, 0 former)
●NSanita.ns.cloudflare.com2026-03-28 → 2026-06-06 · 2 obs
● 2026-06-06 10:08:20
●NStheo.ns.cloudflare.com2026-03-28 → 2026-06-06 · 2 obs
● 2026-06-06 10:08:20
●A104.21.8.1812026-03-28 → 2026-06-06 · 2 obs
● 2026-06-06 10:08:20
●A172.67.157.1632026-03-28 → 2026-06-06 · 2 obs
● 2026-06-06 10:08:20
●A2606:4700:3030::6815:8b52026-03-28 → 2026-06-06 · 2 obs
● 2026-06-06 10:08:20
●A2606:4700:3032::ac43:9da32026-03-28 → 2026-06-06 · 2 obs
● 2026-06-06 10:08:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| courses | b.nic.courses, a.nic.courses, x.nic.courses, y.nic.courses... | 12 records |
| linfxuh.courses | anita.ns.cloudflare.com, theo.ns.cloudflare.com | - |
✅ Authoritative Response
Server:172.64.34.82
NS records: anita.ns.cloudflare.com, theo.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for linfxuh.courses (unsigned zone)
⏱️ Timing
Total: 1384ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.8.181, 172.67.157.163 |
| AAAA | 2 | 2606:4700:3030::6815:8b5, 2606:4700:3032::ac43:9da3 |
| NS | 2 | anita.ns.cloudflare.com, theo.ns.cloudflare.com |
| TXT | 1 | google-site-verification=gey9dIm04uxpE_4 |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | anita.ns.cloudflare.com dns.cloudflare.c |
📌 Glue Records Collected
Total: 12
In-bailiwick: 12 (z.nic.courses, y.nic.courses, x.nic.courses...)
Analysis
IP Addresses
With 4 IP addresses, linfxuh.courses directs to 104.21.8.181, 172.67.157.163, 2606:4700:3030::6815:8b5 and 2606:4700:3032::ac43:9da3.
Among the host names that share IP numbers with linfxuh.courses are feed-10130.waxapushlite.com, www.spongekids.com, pioneerbrewingcompany.co.uk and two others.
Name Servers
linfxuh.courses uses two name servers for its delegation: anita.ns.cloudflare.com and theo.ns.cloudflare.com.
linfxuh.courses has the same name server delegation as a number of other domains, such as eregliagrosan.com, bundestag.watch, davidfencik.com and two more.
At least some of linfxuh.courses's name servers are shared with other domains, for example nouveaux-savoirs.com, 906f456641.com, ehorsehotline.com and two more.
These name servers are routinely co-deployed with the name servers gwen.ns.cloudflare.com, ryan.ns.cloudflare.com, rustam.ns.cloudflare.com and two others.
Host names resolving to 6 IP numbers:
anita.ns.cloudflare.com directs to 108.162.194.82, 162.159.38.82, 172.64.34.82 and three others.
theo.ns.cloudflare.com directs to 108.162.193.144, 172.64.33.144, 173.245.59.144 and three others.