kb.fullstack.edu.vn - robtex.com

kb.fullstack.edu.vn

DNSSEC⚠️ Not signed
A2606:4700:20::681a:82c🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:20::681a:92c🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:20::ac43:45e2🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.26.8.44Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.26.9.44Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.69.226🇺🇸 Cloudflare172.67.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.26.8.44, 104.26.9.44, 172.67.69.226
IPv6 hints2606:4700:20::681a:82c, 2606:4700:20::681a:92c, 2606:4700:20::ac43:45e2
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=208, name=cloudflare-ech.com

fullstack.edu.vn

DNSSEC⚠️ Not signed
A2606:4700:20::681a:82c🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:20::681a:92c🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:20::ac43:45e2🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.26.8.44Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.26.9.44Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.69.226🇺🇸 Cloudflare172.67.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NScourtney.ns.cloudflare.com ⭐
NSreese.ns.cloudflare.com
MXaspmx.l.google.com ⭐
MXalt1.aspmx.l.google.com(5)
MXalt2.aspmx.l.google.com(5)
MXalt3.aspmx.l.google.com(10)
MXalt4.aspmx.l.google.com(10)
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.26.8.44, 104.26.9.44, 172.67.69.226
IPv6 hints2606:4700:20::681a:82c, 2606:4700:20::681a:92c, 2606:4700:20::ac43:45e2
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=208, name=cloudflare-ech.com
SOAcourtney.ns.cloudflare.comdns@cloudflare.com serial=2409185332

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DNS History

6 records (6 active, 0 former)

A104.26.8.44104.26.9.44172.67.69.2262606:4700:20::681a:82c2606:4700:20::681a:92c2606:4700:20::ac43:45e2
●A104.26.8.442026-05-01 → 2026-07-24 · 2 obs
● 2026-05-01 01:18:30
● 2026-07-24 19:48:38
●A104.26.9.442026-05-01 → 2026-07-24 · 2 obs
● 2026-05-01 01:18:30
● 2026-07-24 19:48:38
●A172.67.69.2262026-05-01 → 2026-07-24 · 2 obs
● 2026-05-01 01:18:30
● 2026-07-24 19:48:38
●A2606:4700:20::681a:82c2026-05-01 → 2026-07-24 · 2 obs
● 2026-05-01 01:18:30
● 2026-07-24 19:48:38
●A2606:4700:20::681a:92c2026-05-01 → 2026-07-24 · 2 obs
● 2026-05-01 01:18:30
● 2026-07-24 19:48:38
●A2606:4700:20::ac43:45e22026-05-01 → 2026-07-24 · 2 obs
● 2026-05-01 01:18:30
● 2026-07-24 19:48:38

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
vna.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn...-
fullstack.edu.vncourtney.ns.cloudflare.com, reese.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.35.117

NS records: courtney.ns.cloudflare.com, reese.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for fullstack.edu.vn (unsigned zone)

⏱️ Timing

Total: 651ms | Queries: -

📄 Records

TypeCountSample Data
A3104.26.9.44, 172.67.69.226...
AAAA32606:4700:20::681a:82c, 2606:4700:20::681a:92c...
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

kb.fullstack.edu.vn has 6 IP addresses — 104.26.8.44, 104.26.9.44, 172.67.69.226 and 3 more.

froggy-pro.fullstack.edu.vn, themarketswatch.com, support.skymail.ink and two other host names share IP numbers with kb.fullstack.edu.vn.