ws.schoolofcode.io - dns.ninja

ws.schoolofcode.io

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:aff2🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::6815:483c🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.72.60Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.175.242🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.72.60, 172.67.175.242
IPv6 hints2606:4700:3033::ac43:aff2, 2606:4700:3036::6815:483c
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=200, name=cloudflare-ech.com

schoolofcode.io

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:aff2🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::6815:483c🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.72.60Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.175.242🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSnoah.ns.cloudflare.com ⭐
NSrobin.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)
TXTv=spf1 include:_spf.google.com ~all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.72.60, 172.67.175.242
IPv6 hints2606:4700:3033::ac43:aff2, 2606:4700:3036::6815:483c
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=249, name=cloudflare-ech.com
SOAnoah.ns.cloudflare.comdns@cloudflare.com serial=2404810952

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DNS History

5 records (4 active, 1 former)

A104.21.72.60172.67.175.2422606:4700:3033::ac43:aff22606:4700:3036::6815:483c2606:4700:3035::ac43:aff2
●A104.21.72.602026-04-14 → 2026-07-01 · 2 obs
● 2026-04-14 21:01:28
● 2026-07-01 05:59:04
●A172.67.175.2422026-04-14 → 2026-07-01 · 2 obs
● 2026-04-14 21:01:28
● 2026-07-01 05:59:04
●A2606:4700:3033::ac43:aff22026-06-22 → 2026-07-01 · 3 obs
○ 2026-05-08 12:19:08
● 2026-06-22 19:07:38
● 2026-07-01 05:59:04
○A2606:4700:3035::ac43:aff22026-04-14 → 2026-05-08 · 4 obs
● 2026-04-14 21:01:28
● 2026-05-08 12:19:08
○ 2026-06-22 19:07:38
○ 2026-07-01 05:59:04
●A2606:4700:3036::6815:483c2026-04-14 → 2026-07-01 · 2 obs
● 2026-04-14 21:01:28
● 2026-07-01 05:59:04

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
ioa0.nic.io, a2.nic.io, b0.nic.io, c0.nic.io-
schoolofcode.iorobin.ns.cloudflare.com, noah.ns.cloudflare.com-

✅ Authoritative Response

Server:173.245.59.133

NS records: robin.ns.cloudflare.com, noah.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for schoolofcode.io (unsigned zone)

⏱️ Timing

Total: 1066ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.175.242, 104.21.72.60
AAAA22606:4700:3033::ac43:aff2, 2606:4700:3036::6815:483c
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

ws.schoolofcode.io has four IP addresses: 104.21.72.60, 172.67.175.242, 2606:4700:3033::ac43:aff2 and 2606:4700:3036::6815:483c.