spin.courses - robtex.com
spin.courses
| DNSSEC | ⚠️ Not signed | ||||||
| A | 104.21.39.231Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.171.210🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | daphne.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::a29f:26a9🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | daphne.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c2a9🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | daphne.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:22a9🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | daphne.ns.cloudflare.com | ||||||
| A | 108.162.194.169🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | daphne.ns.cloudflare.com | ||||||
| A | 162.159.38.169Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | daphne.ns.cloudflare.com | ||||||
| A | 172.64.34.169🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | daphne.ns.cloudflare.com | ||||||
| NS | gerald.ns.cloudflare.com | ||||||
| A | 2606:4700:58::adf5:3ba8🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | gerald.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c1a8🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | gerald.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:21a8🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | gerald.ns.cloudflare.com | ||||||
| A | 108.162.193.168🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | gerald.ns.cloudflare.com | ||||||
| A | 172.64.33.168🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | gerald.ns.cloudflare.com | ||||||
| A | 173.245.59.168🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | gerald.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.39.231, 172.67.171.210 | ||||||
| SOA | daphne.ns.cloudflare.comdns@cloudflare.com serial=2409525613 | ||||||
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=1785231646 | ||||||
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●NSdaphne.ns.cloudflare.com2026-07-17 → 2026-07-28 · 2 obs
● 2026-07-28 09:52:16
●NSgerald.ns.cloudflare.com2026-07-17 → 2026-07-28 · 2 obs
● 2026-07-28 09:52:16
●A104.21.39.2312026-07-17 → 2026-07-28 · 2 obs
● 2026-07-28 09:52:16
●A172.67.171.2102026-07-17 → 2026-07-28 · 2 obs
● 2026-07-28 09:52:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| courses | z.nic.courses, b.nic.courses, x.nic.courses, y.nic.courses... | 12 records |
| spin.courses | daphne.ns.cloudflare.com, gerald.ns.cloudflare.com | - |
✅ Authoritative Response
Server:108.162.194.169
NS records: daphne.ns.cloudflare.com, gerald.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for spin.courses (unsigned zone)
⏱️ Timing
Total: 384ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.171.210, 104.21.39.231 |
| NS | 2 | daphne.ns.cloudflare.com, gerald.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | daphne.ns.cloudflare.com dns.cloudflare. |
📌 Glue Records Collected
Total: 12
In-bailiwick: 12 (z.nic.courses, z.nic.courses, b.nic.courses...)
Analysis
IP Addresses
spin.courses points to the IP addresses 104.21.39.231 and 172.67.171.210
dailyroyalplace.uk, capitalistamerican.com, winbers.net and two other host names share IP numbers with spin.courses.
Name Servers
DNS delegation for spin.courses points to two name servers: daphne.ns.cloudflare.com and gerald.ns.cloudflare.com.
spin.courses uses the same name servers as several other domains — among them manzil.org, trackweightlifting.com, valida.at and two more.
At least some of spin.courses's name servers are shared with other domains, for example gaicave.net, cinaglia.com, ghostdl.site and two more.
These name servers tend to be deployed in combination with the name servers terin.ns.cloudflare.com and cruz.ns.cloudflare.com.
Hostnames that resolve to 6 IP addresses:
daphne.ns.cloudflare.com has IP addresses 108.162.194.169, 162.159.38.169 and 172.64.34.169, plus 3 other.
gerald.ns.cloudflare.com has IP addresses 108.162.193.168, 172.64.33.168 and 173.245.59.168, plus 3 other.