hack.courses - robtex.com
hack.courses
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3031::6815:825🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3035::ac43:9cc5🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.8.37Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.156.197🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | alexis.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::adf5:3b3c🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | alexis.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c13c🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | alexis.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:213c🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | alexis.ns.cloudflare.com | ||||||
| A | 108.162.193.60🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | alexis.ns.cloudflare.com | ||||||
| A | 172.64.33.60🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | alexis.ns.cloudflare.com | ||||||
| A | 173.245.59.60🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | alexis.ns.cloudflare.com | ||||||
| NS | gene.ns.cloudflare.com | ||||||
| A | 2606:4700:50::adf5:3a9e🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | gene.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c09e🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | gene.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:209e🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | gene.ns.cloudflare.com | ||||||
| A | 108.162.192.158🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | gene.ns.cloudflare.com | ||||||
| A | 172.64.32.158🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | gene.ns.cloudflare.com | ||||||
| A | 173.245.58.158🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | gene.ns.cloudflare.com | ||||||
| TXT | 1|www.hack.courses | ||||||
| TXT | v=spf1 include:mx.ovh.com ~all | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.8.37, 172.67.156.197 | ||||||
| IPv6 hints | 2606:4700:3031::6815:825, 2606:4700:3035::ac43:9cc5 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=121, name=cloudflare-ech.com | ||||||
| SOA | alexis.ns.cloudflare.comdns@cloudflare.com serial=2402282775 | ||||||
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=1776961358 | ||||||
Same first word
Similar names
DNS History
10 records (6 active, 4 former)
●NSalexis.ns.cloudflare.com2026-02-16 → 2026-04-23 · 2 obs
● 2026-04-23 17:53:04
●NSgene.ns.cloudflare.com2026-02-16 → 2026-04-23 · 2 obs
● 2026-04-23 17:53:04
●A104.21.8.372026-02-16 → 2026-04-23 · 8 obs
● 2026-02-25 19:05:20
○ 2026-03-11 08:11:18
● 2026-03-11 12:34:48
● 2026-03-16 01:21:04
○ 2026-03-26 06:00:38
● 2026-03-26 11:26:08
● 2026-04-23 17:53:04
●A172.67.156.1972026-02-16 → 2026-04-23 · 8 obs
● 2026-02-25 19:05:20
○ 2026-03-11 08:11:18
● 2026-03-11 12:34:48
● 2026-03-16 01:21:04
○ 2026-03-26 06:00:38
● 2026-03-26 11:26:08
● 2026-04-23 17:53:04
○A188.114.96.02026-03-11 → 2026-03-26 · 7 obs
● 2026-03-11 08:11:18
○ 2026-03-11 12:34:48
○ 2026-03-16 01:21:04
● 2026-03-26 06:00:38
○ 2026-03-26 11:26:08
○ 2026-04-23 17:53:04
○A188.114.97.02026-03-11 → 2026-03-26 · 7 obs
● 2026-03-11 08:11:18
○ 2026-03-11 12:34:48
○ 2026-03-16 01:21:04
● 2026-03-26 06:00:38
○ 2026-03-26 11:26:08
○ 2026-04-23 17:53:04
●A2606:4700:3031::6815:8252026-02-16 → 2026-04-23 · 8 obs
● 2026-02-25 19:05:20
○ 2026-03-11 08:11:18
● 2026-03-11 12:34:48
● 2026-03-16 01:21:04
○ 2026-03-26 06:00:38
● 2026-03-26 11:26:08
● 2026-04-23 17:53:04
●A2606:4700:3035::ac43:9cc52026-02-16 → 2026-04-23 · 8 obs
● 2026-02-25 19:05:20
○ 2026-03-11 08:11:18
● 2026-03-11 12:34:48
● 2026-03-16 01:21:04
○ 2026-03-26 06:00:38
● 2026-03-26 11:26:08
● 2026-04-23 17:53:04
○A2a06:98c1:3120::2026-03-11 → 2026-03-26 · 7 obs
● 2026-03-11 08:11:18
○ 2026-03-11 12:34:48
○ 2026-03-16 01:21:04
● 2026-03-26 06:00:38
○ 2026-03-26 11:26:08
○ 2026-04-23 17:53:04
○A2a06:98c1:3121::2026-03-11 → 2026-03-26 · 7 obs
● 2026-03-11 08:11:18
○ 2026-03-11 12:34:48
○ 2026-03-16 01:21:04
● 2026-03-26 06:00:38
○ 2026-03-26 11:26:08
○ 2026-04-23 17:53:04
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| courses | a.nic.courses, b.nic.courses, c.nic.courses, x.nic.courses... | 12 records |
| hack.courses | alexis.ns.cloudflare.com, gene.ns.cloudflare.com | - |
✅ Authoritative Response
Server:173.245.59.60
NS records: alexis.ns.cloudflare.com, gene.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for hack.courses (unsigned zone)
⏱️ Timing
Total: 481ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.156.197, 104.21.8.37 |
| AAAA | 2 | 2606:4700:3035::ac43:9cc5, 2606:4700:3031::6815:825 |
| NS | 2 | alexis.ns.cloudflare.com, gene.ns.cloudflare.com |
| TXT | 2 | 1|www.hack.courses, v=spf1 include:mx.ovh.com ~all |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | alexis.ns.cloudflare.com dns.cloudflare. |
📌 Glue Records Collected
Total: 12
In-bailiwick: 12 (a.nic.courses, a.nic.courses, b.nic.courses...)
Analysis
IP Addresses
hack.courses points to four IP numbers: 2606:4700:3031::6815:825, 2606:4700:3035::ac43:9cc5, 104.21.8.37 and 172.67.156.197.
Other host names including ikingza.com, guilindy.com, www.bharatdiscovery.org, www.(0x706f726e)o(0x787878).ro and www.getowt.com share IP numbers with hack.courses.
Name Servers
hack.courses's delegation uses two name servers, alexis.ns.cloudflare.com and gene.ns.cloudflare.com.
hack.courses shares the same name server setup as other domains, for example a-kon.ru, lp1.eu, a-briz.ru, learnfrenchwithchantal.com and maicom-systems.ru.
hack.courses at least partially shares name servers with other domains, including viewmaster.tv, simpla.pro, lupdelup.com, evotechllc.com and trustoid.net.
These name servers are commonly used with lila.ns.cloudflare.com and blair.ns.cloudflare.com.
Host names with six IP numbers:
alexis.ns.cloudflare.com points to: 2606:4700:58::adf5:3b3c, 2803:f800:50::6ca2:c13c, 2a06:98c1:50::ac40:213c, 108.162.193.60, 172.64.33.60 and 173.245.59.60.
gene.ns.cloudflare.com points to: 2606:4700:50::adf5:3a9e, 2803:f800:50::6ca2:c09e, 2a06:98c1:50::ac40:209e, 108.162.192.158, 172.64.32.158 and 173.245.58.158.