api.ko.edu.vn - robtex.com

api.ko.edu.vn

DNSSEC⚠️ Not signed
A2606:4700:3036::6815:5b59🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:d6c4🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.91.89Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.214.196🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.91.89, 172.67.214.196
IPv6 hints2606:4700:3036::6815:5b59, 2606:4700:3037::ac43:d6c4
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=13, name=cloudflare-ech.com

ko.edu.vn

DNSSEC⚠️ Not signed
A2606:4700:3036::6815:5b59🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:d6c4🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.91.89Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.214.196🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSaurora.ns.cloudflare.com ⭐
NSmario.ns.cloudflare.com
TXTbrevo-code:3b310677dbe0afd03d67ffc74e943018
TXTzalo-platform-site-verification=O82zBfJtDNTBnUGXdE5V2LResYkwdWjpCZGo
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.91.89, 172.67.214.196
IPv6 hints2606:4700:3036::6815:5b59, 2606:4700:3037::ac43:d6c4
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=13, name=cloudflare-ech.com
SOAaurora.ns.cloudflare.comdns@cloudflare.com serial=2401993614

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DNS History

4 records (4 active, 0 former)

A104.21.91.89172.67.214.1962606:4700:3036::6815:5b592606:4700:3037::ac43:d6c4
●A104.21.91.892026-04-30 → 2026-05-11 · 2 obs
● 2026-04-30 23:42:34
● 2026-05-11 20:55:20
●A172.67.214.1962026-04-30 → 2026-05-11 · 2 obs
● 2026-04-30 23:42:34
● 2026-05-11 20:55:20
●A2606:4700:3036::6815:5b592026-04-30 → 2026-05-11 · 2 obs
● 2026-04-30 23:42:34
● 2026-05-11 20:55:20
●A2606:4700:3037::ac43:d6c42026-04-30 → 2026-05-11 · 2 obs
● 2026-04-30 23:42:34
● 2026-05-11 20:55:20

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
vng.dns-servers.vn, c.dns-servers.vn, a.dns-servers.vn, e.dns-servers.vn...-
ko.edu.vnaurora.ns.cloudflare.com, mario.ns.cloudflare.com-

✅ Authoritative Response

Server:173.245.59.203

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: 930ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.214.196, 104.21.91.89
AAAA22606:4700:3037::ac43:d6c4, 2606:4700:3036::6815:5b59
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

Four IP numbers are pointed to by api.ko.edu.vn: 2606:4700:3036::6815:5b59, 2606:4700:3037::ac43:d6c4, 104.21.91.89 and 172.67.214.196.

other host names including test.ko.edu.vn, apps.ko.edu.vn, tamesoft.org, moet.mnvn.ko.edu.vn and iuris9.com share IP numbers with api.ko.edu.vn.