hack.courses - dns.ninja

hack.courses

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:825πŸ‡ΊπŸ‡Έ Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A2606:4700:3035::ac43:9cc5πŸ‡ΊπŸ‡Έ Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A104.21.8.37Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A172.67.156.197πŸ‡ΊπŸ‡Έ Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
NSalexis.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b3cπŸ‡ΊπŸ‡Έ Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRalexis.ns.cloudflare.com
A2803:f800:50::6ca2:c13cπŸ‡¨πŸ‡· Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRalexis.ns.cloudflare.com
A2a06:98c1:50::ac40:213cπŸ‡ΊπŸ‡Έ Cloudflare2a06:98c1:50::/45
PTRalexis.ns.cloudflare.com
A108.162.193.60πŸ‡ΊπŸ‡Έ Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRalexis.ns.cloudflare.com
A172.64.33.60πŸ‡ΊπŸ‡Έ Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRalexis.ns.cloudflare.com
A173.245.59.60πŸ‡ΊπŸ‡Έ Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRalexis.ns.cloudflare.com
NSgene.ns.cloudflare.com
A2606:4700:50::adf5:3a9eπŸ‡ΊπŸ‡Έ Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgene.ns.cloudflare.com
A2803:f800:50::6ca2:c09eπŸ‡¨πŸ‡· Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRgene.ns.cloudflare.com
A2a06:98c1:50::ac40:209eπŸ‡ΊπŸ‡Έ Cloudflare2a06:98c1:50::/45
PTRgene.ns.cloudflare.com
A108.162.192.158πŸ‡ΊπŸ‡Έ Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgene.ns.cloudflare.com
A172.64.32.158πŸ‡ΊπŸ‡Έ Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgene.ns.cloudflare.com
A173.245.58.158πŸ‡ΊπŸ‡Έ Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgene.ns.cloudflare.com
TXT1|www.hack.courses
TXTv=spf1 include:mx.ovh.com ~all
HTTPSHTTP/3, HTTP/2 βœ“ hints match
IPv4 hints104.21.8.37, 172.67.156.197
IPv6 hints2606:4700:3031::6815:825, 2606:4700:3035::ac43:9cc5
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=14, name=cloudflare-ech.com
SOAalexis.ns.cloudflare.comdns@cloudflare.com serial=2405974001

courses

DNSSECπŸ”’ Signed (DS record present)
NSa.nic.courses ⭐
NSb.nic.courses
NSc.nic.courses
NSx.nic.courses
NSy.nic.courses
NSz.nic.courses
SOAa.nic.coursesadmin@tldns.godaddy serial=1780556720

Same first word

Similar names

DNS History

10 records (6 active, 4 former)

NSalexis.ns.cloudflare.comgene.ns.cloudflare.comA104.21.8.37172.67.156.1972606:4700:3031::6815:8252606:4700:3035::ac43:9cc5188.114.96.0188.114.97.02a06:98c1:3120::2a06:98c1:3121::
●NSalexis.ns.cloudflare.com2026-02-16 β†’ 2026-06-04 Β· 2 obs
● 2026-02-16 11:20:06
● 2026-06-04 07:50:20
●NSgene.ns.cloudflare.com2026-02-16 β†’ 2026-06-04 Β· 2 obs
● 2026-02-16 11:20:06
● 2026-06-04 07:50:20
●A104.21.8.372026-02-16 β†’ 2026-06-04 Β· 12 obs
● 2026-02-16 11:20:06
● 2026-02-25 19:05:20
β—‹ 2026-03-11 08:11:18
● 2026-03-11 12:34:48
● 2026-03-16 01:21:04
β—‹ 2026-03-26 06:00:38
● 2026-03-26 11:26:08
● 2026-05-08 00:55:40
β—‹ 2026-05-12 00:35:42
β—‹ 2026-05-27 15:25:24
● 2026-05-29 14:59:26
● 2026-06-04 07:50:20
●A172.67.156.1972026-02-16 β†’ 2026-06-04 Β· 12 obs
● 2026-02-16 11:20:06
● 2026-02-25 19:05:20
β—‹ 2026-03-11 08:11:18
● 2026-03-11 12:34:48
● 2026-03-16 01:21:04
β—‹ 2026-03-26 06:00:38
● 2026-03-26 11:26:08
● 2026-05-08 00:55:40
β—‹ 2026-05-12 00:35:42
β—‹ 2026-05-27 15:25:24
● 2026-05-29 14:59:26
● 2026-06-04 07:50:20
β—‹A188.114.96.02026-03-11 β†’ 2026-05-27 Β· 11 obs
β—‹ 2026-02-25 19:05:20
● 2026-03-11 08:11:18
β—‹ 2026-03-11 12:34:48
β—‹ 2026-03-16 01:21:04
● 2026-03-26 06:00:38
β—‹ 2026-03-26 11:26:08
β—‹ 2026-05-08 00:55:40
● 2026-05-12 00:35:42
● 2026-05-27 15:25:24
β—‹ 2026-05-29 14:59:26
β—‹ 2026-06-04 07:50:20
β—‹A188.114.97.02026-03-11 β†’ 2026-05-27 Β· 11 obs
β—‹ 2026-02-25 19:05:20
● 2026-03-11 08:11:18
β—‹ 2026-03-11 12:34:48
β—‹ 2026-03-16 01:21:04
● 2026-03-26 06:00:38
β—‹ 2026-03-26 11:26:08
β—‹ 2026-05-08 00:55:40
● 2026-05-12 00:35:42
● 2026-05-27 15:25:24
β—‹ 2026-05-29 14:59:26
β—‹ 2026-06-04 07:50:20
●A2606:4700:3031::6815:8252026-02-16 β†’ 2026-06-04 Β· 12 obs
● 2026-02-16 11:20:06
● 2026-02-25 19:05:20
β—‹ 2026-03-11 08:11:18
● 2026-03-11 12:34:48
● 2026-03-16 01:21:04
β—‹ 2026-03-26 06:00:38
● 2026-03-26 11:26:08
● 2026-05-08 00:55:40
β—‹ 2026-05-12 00:35:42
β—‹ 2026-05-27 15:25:24
● 2026-05-29 14:59:26
● 2026-06-04 07:50:20
●A2606:4700:3035::ac43:9cc52026-02-16 β†’ 2026-06-04 Β· 12 obs
● 2026-02-16 11:20:06
● 2026-02-25 19:05:20
β—‹ 2026-03-11 08:11:18
● 2026-03-11 12:34:48
● 2026-03-16 01:21:04
β—‹ 2026-03-26 06:00:38
● 2026-03-26 11:26:08
● 2026-05-08 00:55:40
β—‹ 2026-05-12 00:35:42
β—‹ 2026-05-27 15:25:24
● 2026-05-29 14:59:26
● 2026-06-04 07:50:20
β—‹A2a06:98c1:3120::2026-03-11 β†’ 2026-05-27 Β· 11 obs
β—‹ 2026-02-25 19:05:20
● 2026-03-11 08:11:18
β—‹ 2026-03-11 12:34:48
β—‹ 2026-03-16 01:21:04
● 2026-03-26 06:00:38
β—‹ 2026-03-26 11:26:08
β—‹ 2026-05-08 00:55:40
● 2026-05-12 00:35:42
● 2026-05-27 15:25:24
β—‹ 2026-05-29 14:59:26
β—‹ 2026-06-04 07:50:20
β—‹A2a06:98c1:3121::2026-03-11 β†’ 2026-05-27 Β· 11 obs
β—‹ 2026-02-25 19:05:20
● 2026-03-11 08:11:18
β—‹ 2026-03-11 12:34:48
β—‹ 2026-03-16 01:21:04
● 2026-03-26 06:00:38
β—‹ 2026-03-26 11:26:08
β—‹ 2026-05-08 00:55:40
● 2026-05-12 00:35:42
● 2026-05-27 15:25:24
β—‹ 2026-05-29 14:59:26
β—‹ 2026-06-04 07:50:20

πŸ” DNS Trace

πŸ“‹ Delegation Chain

ZoneNameserversGlue
coursesz.nic.courses, b.nic.courses, x.nic.courses, y.nic.courses...12 records
hack.coursesgene.ns.cloudflare.com, alexis.ns.cloudflare.com-

βœ… Authoritative Response

Server:173.245.58.158

NS records: gene.ns.cloudflare.com, alexis.ns.cloudflare.com

πŸ”’ DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for hack.courses (unsigned zone)

⏱️ Timing

Total: 425ms | Queries: -

πŸ“„ Records

TypeCountSample Data
A2104.21.8.37, 172.67.156.197
AAAA22606:4700:3031::6815:825, 2606:4700:3035::ac43:9cc5
NS2alexis.ns.cloudflare.com, gene.ns.cloudflare.com
TXT21|www.hack.courses, v=spf1 include:mx.ovh.com ~all
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1alexis.ns.cloudflare.com dns.cloudflare.

πŸ“Œ Glue Records Collected

Total: 12

In-bailiwick: 12 (z.nic.courses, z.nic.courses, b.nic.courses...)

Analysis

IP Addresses

hack.courses has 4 IP addresses: 104.21.8.37, 172.67.156.197, 2606:4700:3031::6815:825 and 2606:4700:3035::ac43:9cc5.

ikingza.com, guilindy.com, cultpro73.ru and two other host names share IP numbers with hack.courses.

Name Servers

hack.courses is delegated to two name servers: alexis.ns.cloudflare.com and gene.ns.cloudflare.com.

hack.courses uses the same name servers as several other domains β€” among them a-kon.ru, lp1.eu, a-briz.ru and two more.

hack.courses shares at least some of its name servers with other domains, including viewmaster.tv, simpla.pro, lupdelup.com and two others.

These name servers are frequently paired with the name servers lila.ns.cloudflare.com and blair.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

alexis.ns.cloudflare.com points to 108.162.193.60, 172.64.33.60, 173.245.59.60 and three other IP addresses.

gene.ns.cloudflare.com points to 108.162.192.158, 172.64.32.158, 173.245.58.158 and three other IP addresses.