code.ko.edu.vn - dns.ninja

`code.ko.edu.vn`

DNSSEC	⚠️ Not signed
A	2606:4700:3035::6815:5b59^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:d6c4^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.91.89^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.214.196^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.91.89, 172.67.214.196
		IPv6 hints	2606:4700:3035::6815:5b59, 2606:4700:3035::ac43:d6c4
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=191, name=cloudflare-ech.com

`ko.edu.vn`

DNSSEC	⚠️ Not signed
A	2606:4700:3035::6815:5b59^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:d6c4^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.91.89^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.214.196^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`aurora.ns.cloudflare.com` ⭐
NS	`mario.ns.cloudflare.com`
TXT	`brevo-code:3b310677dbe0afd03d67ffc74e943018`
TXT	`zalo-platform-site-verification=O82zBfJtDNTBnUGXdE5V2LResYkwdWjpCZGo`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.91.89, 172.67.214.196
		IPv6 hints	2606:4700:3035::6815:5b59, 2606:4700:3035::ac43:d6c4
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=191, name=cloudflare-ech.com
SOA	`aurora.ns.cloudflare.com`dns@cloudflare.com serial=2407169468

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DNS History

6 records (4 active, 2 former)

●A104.21.91.892026-05-01 → 2026-07-05 · 2 obs

● 2026-05-01 00:14:54
● 2026-07-05 05:16:08

●A172.67.214.1962026-05-01 → 2026-07-05 · 2 obs

● 2026-05-01 00:14:54
● 2026-07-05 05:16:08

●A2606:4700:3035::6815:5b592026-06-30 → 2026-07-05 · 3 obs

○ 2026-05-01 00:14:54
● 2026-06-30 06:27:08
● 2026-07-05 05:16:08

●A2606:4700:3035::ac43:d6c42026-06-30 → 2026-07-05 · 3 obs

○ 2026-05-01 00:14:54
● 2026-06-30 06:27:08
● 2026-07-05 05:16:08

○A2606:4700:3036::6815:5b592026-05-01 → 2026-05-01 · 3 obs

● 2026-05-01 00:14:54
○ 2026-06-30 06:27:08
○ 2026-07-05 05:16:08

○A2606:4700:3037::ac43:d6c42026-05-01 → 2026-05-01 · 3 obs

● 2026-05-01 00:14:54
○ 2026-06-30 06:27:08
○ 2026-07-05 05:16:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	g.dns-servers.vn, h.dns-servers.vn, e.dns-servers.vn, d.dns-servers.vn...	15 records
ko.edu.vn	aurora.ns.cloudflare.com, mario.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.194.110

NS records: aurora.ns.cloudflare.com, mario.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 848ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.214.196, 104.21.91.89`
AAAA	2	`2606:4700:3035::ac43:d6c4, 2606:4700:3035::6815:5b59`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`

📌 Glue Records Collected

Total: 15

In-bailiwick: 15 (a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn...)

Analysis

IP Addresses

code.ko.edu.vn resolves to four IP addresses: 104.21.91.89, 172.67.214.196, 2606:4700:3035::6815:5b59 and 2606:4700:3035::ac43:d6c4.

Additional host names — xn--3-zwf2c1avykb7c2era6a.com, ysbq168.com, mnvn.ko.edu.vn and two others — share IP numbers with code.ko.edu.vn.