code.fullstack.edu.vn - dns.ninja

`code.fullstack.edu.vn`

DNSSEC	⚠️ Not signed
A	2606:4700:20::681a:82c^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:20::681a:92c^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:20::ac43:45e2^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.8.44^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.9.44^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.69.226^{🇺🇸 Cloudflare172.67.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.26.8.44, 104.26.9.44, 172.67.69.226
		IPv6 hints	2606:4700:20::681a:82c, 2606:4700:20::681a:92c, 2606:4700:20::ac43:45e2
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=68, name=cloudflare-ech.com

`fullstack.edu.vn`

DNSSEC	⚠️ Not signed
A	2606:4700:20::681a:82c^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:20::681a:92c^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:20::ac43:45e2^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.8.44^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.9.44^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.69.226^{🇺🇸 Cloudflare172.67.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`courtney.ns.cloudflare.com` ⭐
NS	`reese.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.26.8.44, 104.26.9.44, 172.67.69.226
		IPv6 hints	2606:4700:20::681a:82c, 2606:4700:20::681a:92c, 2606:4700:20::ac43:45e2
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=68, name=cloudflare-ech.com
SOA	`courtney.ns.cloudflare.com`dns@cloudflare.com serial=2410907967

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DNS History

6 records (6 active, 0 former)

●A104.26.8.442026-05-01 → 2026-08-05 · 2 obs

● 2026-05-01 05:55:52
● 2026-08-05 14:50:36

●A104.26.9.442026-05-01 → 2026-08-05 · 2 obs

● 2026-05-01 05:55:52
● 2026-08-05 14:50:36

●A172.67.69.2262026-05-01 → 2026-08-05 · 2 obs

● 2026-05-01 05:55:52
● 2026-08-05 14:50:36

●A2606:4700:20::681a:82c2026-05-01 → 2026-08-05 · 2 obs

● 2026-05-01 05:55:52
● 2026-08-05 14:50:36

●A2606:4700:20::681a:92c2026-05-01 → 2026-08-05 · 2 obs

● 2026-05-01 05:55:52
● 2026-08-05 14:50:36

●A2606:4700:20::ac43:45e22026-05-01 → 2026-08-05 · 2 obs

● 2026-05-01 05:55:52
● 2026-08-05 14:50:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	f.dns-servers.vn, d.dns-servers.vn, b.dns-servers.vn, h.dns-servers.vn...	16 records
fullstack.edu.vn	reese.ns.cloudflare.com, courtney.ns.cloudflare.com	-

✅ Authoritative Response

Server:162.159.44.117

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 872ms | Queries: -

📄 Records

Type	Count	Sample Data
A	3	`104.26.8.44, 172.67.69.226...`
AAAA	3	`2606:4700:20::681a:92c, 2606:4700:20::ac43:45e2...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`

📌 Glue Records Collected

Total: 16

In-bailiwick: 16 (h.dns-servers.vn, g.dns-servers.vn, f.dns-servers.vn...)

Analysis

IP Addresses

code.fullstack.edu.vn directs to 6 IP numbers: 104.26.8.44, 104.26.9.44, 172.67.69.226 and 3 other.

Two other host names, along with static.fullstack.edu.vn, av.kebony.com and clippy.fullstack.edu.vn, also share IP numbers with code.fullstack.edu.vn.