leadwin.superlearn.kr - robtex.com

leadwin.superlearn.kr

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:c8d7🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::6815:15dd🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.21.221Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.200.215🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.21.221, 172.67.200.215
IPv6 hints2606:4700:3033::ac43:c8d7, 2606:4700:3034::6815:15dd
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=131, name=cloudflare-ech.com

superlearn.kr

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:c8d7🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::6815:15dd🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.21.221Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.200.215🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSachiel.ns.cloudflare.com ⭐
NStia.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.21.221, 172.67.200.215
IPv6 hints2606:4700:3033::ac43:c8d7, 2606:4700:3034::6815:15dd
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=131, name=cloudflare-ech.com
SOAachiel.ns.cloudflare.comdns@cloudflare.com serial=2402253729

Same first word

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DNS History

5 records (4 active, 1 former)

A104.21.21.221172.67.200.2152606:4700:3033::ac43:c8d72606:4700:3034::6815:15dd210.109.83.182
●A104.21.21.2212026-03-25 → 2026-05-13 · 2 obs
● 2026-03-25 08:45:28
● 2026-05-13 04:59:48
●A172.67.200.2152026-03-25 → 2026-05-13 · 2 obs
● 2026-03-25 08:45:28
● 2026-05-13 04:59:48
○A210.109.83.1822026-03-25 → 2026-05-13 · 2 obs
○ 2026-03-25 08:45:28
○ 2026-05-13 04:59:48
●A2606:4700:3033::ac43:c8d72026-03-25 → 2026-05-13 · 2 obs
● 2026-03-25 08:45:28
● 2026-05-13 04:59:48
●A2606:4700:3034::6815:15dd2026-03-25 → 2026-05-13 · 2 obs
● 2026-03-25 08:45:28
● 2026-05-13 04:59:48

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
kre.dns.kr, d.dns.kr, g.dns.kr, b.dns.kr...-
superlearn.krtia.ns.cloudflare.com, achiel.ns.cloudflare.com-

✅ Authoritative Response

Server:162.159.44.123

NS records: tia.ns.cloudflare.com, achiel.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for superlearn.kr (unsigned zone)

⏱️ Timing

Total: 1255ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.21.221, 172.67.200.215
AAAA22606:4700:3034::6815:15dd, 2606:4700:3033::ac43:c8d7
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

leadwin.superlearn.kr maps to four IP numbers: 2606:4700:3033::ac43:c8d7, 2606:4700:3034::6815:15dd, 104.21.21.221 and 172.67.200.215.

Other host names, for instance mrshoop.com, alws.org.au, aura-x.site, www.nutranail.com and wilson-appartement.com share IP numbers with leadwin.superlearn.kr.