course-faq.com - robtex.com
course-faq.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3034::ac43:bbfa🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3035::6815:7c0🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.7.192Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.187.250🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | christian.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::a29f:2cf7Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| A | 2803:f800:50::6ca2:c3f7Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| A | 2a06:98c1:50::ac40:23f7Cloudflare2a06:98c1:50::/45 | ||||||
| A | 108.162.195.247Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| A | 162.159.44.247Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| A | 172.64.35.247Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | noor.ns.cloudflare.com | ||||||
| A | 2606:4700:50::a29f:264a🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | noor.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c24a🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | noor.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:224a🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | noor.ns.cloudflare.com | ||||||
| A | 108.162.194.74🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | noor.ns.cloudflare.com | ||||||
| A | 162.159.38.74Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | noor.ns.cloudflare.com | ||||||
| A | 172.64.34.74🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | noor.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.7.192, 172.67.187.250 | ||||||
| IPv6 hints | 2606:4700:3034::ac43:bbfa, 2606:4700:3035::6815:7c0 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=182, name=cloudflare-ech.com | ||||||
| SOA | christian.ns.cloudflare.comdns@cloudflare.com serial=2407731645 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1783844937 | ||||||
Same first word
course-faq.com |
DNS History
8 records (6 active, 2 former)
●NSchristian.ns.cloudflare.com2026-03-31 → 2026-07-12 · 2 obs
● 2026-07-12 08:50:48
●NSnoor.ns.cloudflare.com2026-03-31 → 2026-07-12 · 2 obs
● 2026-07-12 08:50:48
●A104.21.7.1922026-03-31 → 2026-07-12 · 2 obs
● 2026-07-12 08:50:48
●A172.67.187.2502026-03-31 → 2026-07-12 · 2 obs
● 2026-07-12 08:50:48
○A2606:4700:3032::6815:7c02026-03-31 → 2026-06-01 · 4 obs
● 2026-06-01 14:56:22
○ 2026-06-27 02:31:24
○ 2026-07-12 08:50:48
●A2606:4700:3034::ac43:bbfa2026-06-27 → 2026-07-12 · 3 obs
● 2026-06-27 02:31:24
● 2026-07-12 08:50:48
●A2606:4700:3035::6815:7c02026-06-27 → 2026-07-12 · 3 obs
● 2026-06-27 02:31:24
● 2026-07-12 08:50:48
○A2606:4700:3036::ac43:bbfa2026-03-31 → 2026-06-01 · 4 obs
● 2026-06-01 14:56:22
○ 2026-06-27 02:31:24
○ 2026-07-12 08:50:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | d.gtld-servers.net, j.gtld-servers.net, e.gtld-servers.net, c.gtld-servers.net... | - |
| course-faq.com | noor.ns.cloudflare.com, christian.ns.cloudflare.com | 12 records |
✅ Authoritative Response
Server:108.162.195.247
NS records: noor.ns.cloudflare.com, christian.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for course-faq.com (unsigned zone)
⏱️ Timing
Total: 2200ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.7.192, 172.67.187.250 |
| AAAA | 2 | 2606:4700:3035::6815:7c0, 2606:4700:3034::ac43:bbfa |
| NS | 2 | christian.ns.cloudflare.com, noor.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | christian.ns.cloudflare.com dns.cloudfla |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (noor.ns.cloudflare.com, noor.ns.cloudflare.com, noor.ns.cloudflare.com...)
Analysis
IP Addresses
course-faq.com has four IP addresses: 104.21.7.192, 172.67.187.250, 2606:4700:3034::ac43:bbfa and 2606:4700:3035::6815:7c0.
Other host names, for instance www.xiuxiantixu.cn, www.marketcrosshairs.com, binoq.nl and two other share IP numbers with course-faq.com.
Name Servers
course-faq.com uses two name servers for its delegation: christian.ns.cloudflare.com and noor.ns.cloudflare.com.
The name server configuration of course-faq.com is shared with other domains, for instance judgeround.pro, rabbittunnel.com, cubicsofts.com and two others.
Hosts with 6 IP addresses each:
Hostname christian.ns.cloudflare.com directs to 108.162.195.247, 162.159.44.247 and 172.64.35.247 along with 3 other IP addresses.
Hostname noor.ns.cloudflare.com directs to 108.162.194.74, 162.159.38.74 and 172.64.34.74 along with 3 other IP addresses.