www.madstud.io - robtex.com

www.madstud.io

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:8667🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::6815:19a9🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.25.169Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.134.103🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.25.169, 172.67.134.103
IPv6 hints2606:4700:3033::ac43:8667, 2606:4700:3034::6815:19a9
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=63, name=cloudflare-ech.com

madstud.io

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:8667🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::6815:19a9🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.25.169Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.134.103🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSheidi.ns.cloudflare.com ⭐
NSmalcolm.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)
TXTgoogle-site-verification=0dpEiBzzfUmxa5SYfwmODXe2N1F70y0tDxVgsppv4no
TXTv=spf1 mx include:mailgun.org include:_spf.google.com -all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.25.169, 172.67.134.103
IPv6 hints2606:4700:3033::ac43:8667, 2606:4700:3034::6815:19a9
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=37, name=cloudflare-ech.com
SOAheidi.ns.cloudflare.comdns@cloudflare.com serial=2401527018

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DNS History

8 records (4 active, 4 former)

20192020202120222023202420252026A104.21.25.169172.67.134.1032606:4700:3033::ac43:86672606:4700:3034::6815:19a9172.64.80.1185.8.237.1162606:4700:130:436c:6f75:6466:6c61:72652a02:2b88:2:1::36d0:1
●A104.21.25.1692026-04-05 → 2026-04-13 · 3 obs
○ 2026-03-15 05:02:10
● 2026-04-05 11:09:28
● 2026-04-13 16:10:36
○A172.64.80.12026-03-15 → 2026-03-15 · 4 obs
○ 2018-05-15 15:27:46
● 2026-03-15 05:02:10
○ 2026-04-05 11:09:28
○ 2026-04-13 16:10:36
●A172.67.134.1032026-04-05 → 2026-04-13 · 3 obs
○ 2026-03-15 05:02:10
● 2026-04-05 11:09:28
● 2026-04-13 16:10:36
○A185.8.237.1162018-05-15 → 2018-05-15 · 3 obs
● 2018-05-15 15:27:46
○ 2026-03-15 05:02:10
○ 2026-04-13 16:10:36
○A2606:4700:130:436c:6f75:6466:6c61:72652026-03-15 → 2026-04-13 · 2 obs
○ 2026-03-15 05:02:10
○ 2026-04-13 16:10:36
●A2606:4700:3033::ac43:86672026-03-15 → 2026-04-13 · 3 obs
○ 2018-05-15 15:27:46
● 2026-03-15 05:02:10
● 2026-04-13 16:10:36
●A2606:4700:3034::6815:19a92026-03-15 → 2026-04-13 · 3 obs
○ 2018-05-15 15:27:46
● 2026-03-15 05:02:10
● 2026-04-13 16:10:36
○A2a02:2b88:2:1::36d0:12018-05-15 → 2018-05-15 · 3 obs
● 2018-05-15 15:27:46
○ 2026-03-15 05:02:10
○ 2026-04-13 16:10:36

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
ioc0.nic.io, b0.nic.io, a0.nic.io, a2.nic.io-
madstud.iomalcolm.ns.cloudflare.com, heidi.ns.cloudflare.com-

✅ Authoritative Response

Server:162.159.44.81

NS records: malcolm.ns.cloudflare.com, heidi.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for madstud.io (unsigned zone)

⏱️ Timing

Total: 524ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.25.169, 172.67.134.103
AAAA22606:4700:3033::ac43:8667, 2606:4700:3034::6815:19a9
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

www.madstud.io maps to four IP numbers: 2606:4700:3033::ac43:8667, 2606:4700:3034::6815:19a9, 104.21.25.169 and 172.67.134.103.

Other host names, for instance dsscrimlaw.com, trumatic.cl, www.exigocs.com, google.kihy.workers.dev and ishcloud.com share IP numbers with www.madstud.io.