courses.codingexplained.com - dns.ninja

courses.codingexplained.com

DNSSEC⚠️ Not signed
A2606:4700:3037::6815:1847🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:d95c🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.24.71Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.217.92🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.24.71, 172.67.217.92
IPv6 hints2606:4700:3037::6815:1847, 2606:4700:3037::ac43:d95c
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=215, name=cloudflare-ech.com

codingexplained.com

DNSSEC⚠️ Not signed
A2606:4700:3037::6815:1847🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:d95c🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.24.71Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.217.92🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSrachel.ns.cloudflare.com ⭐
NSsean.ns.cloudflare.com
MXmx.simply.com ⭐
TXTgoogle-site-verification=Hi_mTA4EqrhICTitErC_TkuyvhNLsfykvZXhEJTb5Lc
TXTv=spf1 include:mailgun.org ~all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.24.71, 172.67.217.92
IPv6 hints2606:4700:3037::6815:1847, 2606:4700:3037::ac43:d95c
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=25, name=cloudflare-ech.com
SOArachel.ns.cloudflare.comdns@cloudflare.com serial=2409156476

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DNS History

9 records (4 active, 5 former)

A104.21.24.71172.67.217.922606:4700:3037::6815:18472606:4700:3037::ac43:d95c188.114.96.0188.114.97.02606:4700:3030::ac43:d95c2a06:98c1:3120::2a06:98c1:3121::
●A104.21.24.712026-02-16 → 2026-08-01 · 6 obs
● 2026-02-16 05:59:30
● 2026-03-19 01:09:22
○ 2026-03-29 00:28:34
○ 2026-04-25 03:50:12
● 2026-04-29 21:16:48
● 2026-08-01 13:04:34
●A172.67.217.922026-02-16 → 2026-08-01 · 6 obs
● 2026-02-16 05:59:30
● 2026-03-19 01:09:22
○ 2026-03-29 00:28:34
○ 2026-04-25 03:50:12
● 2026-04-29 21:16:48
● 2026-08-01 13:04:34
○A188.114.96.02026-03-29 → 2026-04-25 · 5 obs
○ 2026-03-19 01:09:22
● 2026-03-29 00:28:34
● 2026-04-25 03:50:12
○ 2026-04-29 21:16:48
○ 2026-08-01 13:04:34
○A188.114.97.02026-03-29 → 2026-04-25 · 5 obs
○ 2026-03-19 01:09:22
● 2026-03-29 00:28:34
● 2026-04-25 03:50:12
○ 2026-04-29 21:16:48
○ 2026-08-01 13:04:34
○A2606:4700:3030::ac43:d95c2026-02-16 → 2026-05-30 · 8 obs
● 2026-02-16 05:59:30
● 2026-03-19 01:09:22
○ 2026-03-29 00:28:34
○ 2026-04-25 03:50:12
● 2026-04-29 21:16:48
● 2026-05-30 16:27:32
○ 2026-06-29 03:05:28
○ 2026-08-01 13:04:34
●A2606:4700:3037::6815:18472026-02-16 → 2026-08-01 · 6 obs
● 2026-02-16 05:59:30
● 2026-03-19 01:09:22
○ 2026-03-29 00:28:34
○ 2026-04-25 03:50:12
● 2026-04-29 21:16:48
● 2026-08-01 13:04:34
●A2606:4700:3037::ac43:d95c2026-06-29 → 2026-08-01 · 3 obs
○ 2026-05-30 16:27:32
● 2026-06-29 03:05:28
● 2026-08-01 13:04:34
○A2a06:98c1:3120::2026-03-29 → 2026-04-25 · 5 obs
○ 2026-03-19 01:09:22
● 2026-03-29 00:28:34
● 2026-04-25 03:50:12
○ 2026-04-29 21:16:48
○ 2026-08-01 13:04:34
○A2a06:98c1:3121::2026-03-29 → 2026-04-25 · 5 obs
○ 2026-03-19 01:09:22
● 2026-03-29 00:28:34
● 2026-04-25 03:50:12
○ 2026-04-29 21:16:48
○ 2026-08-01 13:04:34

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
codingexplained.comsean.ns.cloudflare.com, rachel.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.193.231

NS records: sean.ns.cloudflare.com, rachel.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 133ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.24.71, 172.67.217.92
AAAA22606:4700:3037::ac43:d95c, 2606:4700:3037::6815:1847
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (sean.ns.cloudflare.com, sean.ns.cloudflare.com, sean.ns.cloudflare.com...)

Analysis

IP Addresses

courses.codingexplained.com directs to four IP numbers, which are 104.21.24.71, 172.67.217.92, 2606:4700:3037::6815:1847 and 2606:4700:3037::ac43:d95c.

www.concentricbyginkgo.com, qdhsjysm.com, aionlink.info plus two other host names have IP numbers in common with courses.codingexplained.com.