courses.codingexplained.com - robtex.com

courses.codingexplained.com

DNSSEC⚠️ Not signed
A2606:4700:3030::ac43:d95c🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:1847🇺🇸 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
IPv4104.21.24.71, 172.67.217.92
IPv62606:4700:3030::ac43:d95c, 2606:4700:3037::6815:1847

codingexplained.com

DNSSEC⚠️ Not signed
A2606:4700:3030::ac43:d95c🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:1847🇺🇸 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
IPv4104.21.24.71, 172.67.217.92
IPv62606:4700:3030::ac43:d95c, 2606:4700:3037::6815:1847
SOArachel.ns.cloudflare.comdns@cloudflare.com serial=2396714851

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DNS History

4 records (4 active, 0 former)

A104.21.24.71172.67.217.922606:4700:3030::ac43:d95c2606:4700:3037::6815:1847
●A104.21.24.712026-02-16 → 2026-02-28 · 2 obs
● 2026-02-16 05:59:30
● 2026-02-28 14:14:20
●A172.67.217.922026-02-16 → 2026-02-28 · 2 obs
● 2026-02-16 05:59:30
● 2026-02-28 14:14:20
●A2606:4700:3030::ac43:d95c2026-02-16 → 2026-02-28 · 2 obs
● 2026-02-16 05:59:30
● 2026-02-28 14:14:20
●A2606:4700:3037::6815:18472026-02-16 → 2026-02-28 · 2 obs
● 2026-02-16 05:59:30
● 2026-02-28 14:14:20

🔍 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: 320ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.24.71, 172.67.217.92
AAAA22606:4700:3037::6815:1847, 2606:4700:3030::ac43:d95c
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

Four IP numbers are pointed to by courses.codingexplained.com: 2606:4700:3030::ac43:d95c, 2606:4700:3037::6815:1847, 104.21.24.71 and 172.67.217.92.

other host names including www.concentricbyginkgo.com, www.codingexplained.com, qdhsjysm.com, aionlink.info and drdinl.com share IP numbers with courses.codingexplained.com.