codecourse.org - dns.ninja

codecourse.org

DNSSEC⚠️ Not signed
NSgerald.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3ba8🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgerald.ns.cloudflare.com
A2803:f800:50::6ca2:c1a8🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRgerald.ns.cloudflare.com
A2a06:98c1:50::ac40:21a8🇺🇸 Cloudflare2a06:98c1:50::/45
PTRgerald.ns.cloudflare.com
A108.162.193.168🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgerald.ns.cloudflare.com
A172.64.33.168🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgerald.ns.cloudflare.com
A173.245.59.168🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgerald.ns.cloudflare.com
NSmaria.ns.cloudflare.com
A2606:4700:50::adf5:3ac0🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmaria.ns.cloudflare.com
A2803:f800:50::6ca2:c0c0🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRmaria.ns.cloudflare.com
A2a06:98c1:50::ac40:20c0🇺🇸 Cloudflare2a06:98c1:50::/45
PTRmaria.ns.cloudflare.com
A108.162.192.192🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmaria.ns.cloudflare.com
A172.64.32.192🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmaria.ns.cloudflare.com
A173.245.58.192🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmaria.ns.cloudflare.com
SOAgerald.ns.cloudflare.comdns@cloudflare.com serial=2404592571

org

DNSSEC🔒 Signed (DS record present)
NSa0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation
NSa2.org.afilias-nst.info ⚠️ Not in parent delegation
NSb0.org.afilias-nst.org
NSb2.org.afilias-nst.org
NSc0.org.afilias-nst.info ⚠️ Not in parent delegation
NSd0.org.afilias-nst.org
SOAa0.org.afilias-nst.infohostmaster@donuts.email serial=1781447193

Same first word

codecourse.com
codecourse.net
codecourse.org

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DNS History

17 records (2 active, 15 former)

20162017201820192020202120222023202420252026NSgerald.ns.cloudflare.commaria.ns.cloudflare.comned.ns.cloudflare.comnora.ns.cloudflare.comns09.domaincontrol.comns1.digitalocean.comns10.domaincontrol.comns2.digitalocean.comns3.digitalocean.comMXmailstore1.secureserver.netsmtp.secureserver.netA104.28.10.21104.28.11.21184.168.221.622400:cb00:2048:1::681c:a152400:cb00:2048:1::681c:b1546.101.57.80
●NSgerald.ns.cloudflare.com2026-06-12 → 2026-06-14 · 3 obs
○ 2016-11-26 11:32:42
● 2026-06-12 05:10:12
● 2026-06-14 15:04:44
●NSmaria.ns.cloudflare.com2026-06-12 → 2026-06-14 · 3 obs
○ 2016-11-26 11:32:42
● 2026-06-12 05:10:12
● 2026-06-14 15:04:44
○NSned.ns.cloudflare.com2016-11-26 → 2016-11-26 · 4 obs
○ 2016-03-25 17:36:14
● 2016-11-26 11:32:42
○ 2026-06-12 05:10:12
○ 2026-06-14 15:04:44
○NSnora.ns.cloudflare.com2016-11-26 → 2016-11-26 · 4 obs
○ 2016-03-25 17:36:14
● 2016-11-26 11:32:42
○ 2026-06-12 05:10:12
○ 2026-06-14 15:04:44
○NSns09.domaincontrol.com2015-05-14 → 2015-05-14 · 3 obs
● 2015-05-14 05:29:10
○ 2015-10-13 17:56:34
○ 2026-06-14 15:04:44
○NSns1.digitalocean.com2015-10-13 → 2016-03-25 · 5 obs
○ 2015-05-14 05:29:10
● 2015-10-13 17:56:34
● 2016-03-25 17:36:14
○ 2016-11-26 11:32:42
○ 2026-06-14 15:04:44
○NSns10.domaincontrol.com2015-05-14 → 2015-05-14 · 3 obs
● 2015-05-14 05:29:10
○ 2015-10-13 17:56:34
○ 2026-06-14 15:04:44
○NSns2.digitalocean.com2015-10-13 → 2016-03-25 · 5 obs
○ 2015-05-14 05:29:10
● 2015-10-13 17:56:34
● 2016-03-25 17:36:14
○ 2016-11-26 11:32:42
○ 2026-06-14 15:04:44
○NSns3.digitalocean.com2015-10-13 → 2016-03-25 · 5 obs
○ 2015-05-14 05:29:10
● 2015-10-13 17:56:34
● 2016-03-25 17:36:14
○ 2016-11-26 11:32:42
○ 2026-06-14 15:04:44
○MXmailstore1.secureserver.net2015-05-14 → 2015-05-14 · 3 obs
● 2015-05-14 05:29:10
○ 2015-10-13 17:56:34
○ 2026-06-14 15:04:44
○MXsmtp.secureserver.net2015-05-14 → 2015-05-14 · 3 obs
● 2015-05-14 05:29:10
○ 2015-10-13 17:56:34
○ 2026-06-14 15:04:44
○A104.28.10.212016-11-26 → 2016-11-26 · 4 obs
○ 2016-03-25 17:36:14
● 2016-11-26 11:32:42
○ 2026-06-12 05:10:12
○ 2026-06-14 15:04:44
○A104.28.11.212016-11-26 → 2016-11-26 · 4 obs
○ 2016-03-25 17:36:14
● 2016-11-26 11:32:42
○ 2026-06-12 05:10:12
○ 2026-06-14 15:04:44
○A184.168.221.622015-05-14 → 2015-05-14 · 3 obs
● 2015-05-14 05:29:10
○ 2015-10-13 17:56:34
○ 2026-06-14 15:04:44
○A2400:cb00:2048:1::681c:a152016-11-26 → 2016-11-26 · 4 obs
○ 2016-03-25 17:36:14
● 2016-11-26 11:32:42
○ 2026-06-12 05:10:12
○ 2026-06-14 15:04:44
○A2400:cb00:2048:1::681c:b152016-11-26 → 2016-11-26 · 4 obs
○ 2016-03-25 17:36:14
● 2016-11-26 11:32:42
○ 2026-06-12 05:10:12
○ 2026-06-14 15:04:44
○A46.101.57.802015-10-13 → 2016-03-25 · 5 obs
○ 2015-05-14 05:29:10
● 2015-10-13 17:56:34
● 2016-03-25 17:36:14
○ 2016-11-26 11:32:42
○ 2026-06-14 15:04:44

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org-
codecourse.orggerald.ns.cloudflare.com, maria.ns.cloudflare.com-

✅ Authoritative Response

Server:173.245.59.168

NS records: gerald.ns.cloudflare.com, maria.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for codecourse.org (unsigned zone)

⏱️ Timing

Total: 280ms | Queries: -

📄 Records

TypeCountSample Data
NS2gerald.ns.cloudflare.com, maria.ns.cloudflare.com
SOA1gerald.ns.cloudflare.com dns.cloudflare.

Analysis

Name Servers

codecourse.org is served by two delegated name servers, gerald.ns.cloudflare.com and maria.ns.cloudflare.com.

codecourse.org shares its name server setup with other domains, including careermaximiser.com, govqrq.com, realmbot.xyz and two others.

There is at least partial name server overlap between codecourse.org and other domains — acheigourmet.com.br, canadagooseoutletstore.us, kaushal.edu.np and two more among them.

These name servers are routinely deployed together with the name servers ruth.ns.cloudflare.com.

Host names with 6 IP numbers:

gerald.ns.cloudflare.com carries IP addresses 108.162.193.168, 172.64.33.168 and 173.245.59.168, with 3 other addresses beyond those.

maria.ns.cloudflare.com carries IP addresses 108.162.192.192, 172.64.32.192 and 173.245.58.192, with 3 other addresses beyond those.