studyum.io - robtex.com

studyum.io

DNSSEC⚠️ Not signed
A2606:4700:3030::ac43:c236🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::6815:4a02🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.74.2Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.194.54🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSitzel.ns.cloudflare.com ⭐
A2606:4700:50::a29f:262a🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRitzel.ns.cloudflare.com
A2803:f800:50::6ca2:c22a🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRitzel.ns.cloudflare.com
A2a06:98c1:50::ac40:222a🇺🇸 Cloudflare2a06:98c1:50::/45
PTRitzel.ns.cloudflare.com
A108.162.194.42🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRitzel.ns.cloudflare.com
A162.159.38.42Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRitzel.ns.cloudflare.com
A172.64.34.42🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRitzel.ns.cloudflare.com
NSwatson.ns.cloudflare.com
A2606:4700:58::a29f:2c17🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRwatson.ns.cloudflare.com
A2803:f800:50::6ca2:c317🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRwatson.ns.cloudflare.com
A2a06:98c1:50::ac40:2317🇺🇸 Cloudflare2a06:98c1:50::/45
PTRwatson.ns.cloudflare.com
A108.162.195.23🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRwatson.ns.cloudflare.com
A162.159.44.23Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRwatson.ns.cloudflare.com
A172.64.35.23🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRwatson.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.74.2, 172.67.194.54
IPv6 hints2606:4700:3030::ac43:c236, 2606:4700:3035::6815:4a02
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=209, name=cloudflare-ech.com
SOAitzel.ns.cloudflare.comdns@cloudflare.com serial=2400168963

io

DNSSEC🔒 Signed (DS record present)
NSa0.nic.io ⭐
NSa2.nic.io
NSb0.nic.io
NSc0.nic.io
SOAa0.nic.iohostmaster@donuts.email serial=1776072204

Subdomains

www.studyum.io

Same first word

studyum.io

Similar names

mustudy.net
umstudy.com
mustudy.com

DNS History

12 records (6 active, 6 former)

20192020202120222023202420252026NSitzel.ns.cloudflare.comwatson.ns.cloudflare.comns1.nfoservers.comns2.nfoservers.comns3.nfoservers.comMXmail.nfoservers.commail2.nfoservers.comA104.21.74.2172.67.194.542606:4700:3030::ac43:c2362606:4700:3035::6815:4a0272.5.53.8
●NSitzel.ns.cloudflare.com2026-03-24 → 2026-04-13 · 3 obs
○ 2018-12-29 14:19:04
● 2026-03-24 02:59:16
● 2026-04-13 09:53:08
○NSns1.nfoservers.com2018-12-29 → 2018-12-29 · 3 obs
● 2018-12-29 14:19:04
○ 2026-03-24 02:59:16
○ 2026-04-13 09:53:08
○NSns2.nfoservers.com2018-12-29 → 2018-12-29 · 3 obs
● 2018-12-29 14:19:04
○ 2026-03-24 02:59:16
○ 2026-04-13 09:53:08
○NSns3.nfoservers.com2018-12-29 → 2018-12-29 · 3 obs
● 2018-12-29 14:19:04
○ 2026-03-24 02:59:16
○ 2026-04-13 09:53:08
●NSwatson.ns.cloudflare.com2026-03-24 → 2026-04-13 · 3 obs
○ 2018-12-29 14:19:04
● 2026-03-24 02:59:16
● 2026-04-13 09:53:08
○MXmail.nfoservers.com2018-12-29 → 2018-12-29 · 3 obs
● 2018-12-29 14:19:04
○ 2026-03-24 02:59:16
○ 2026-04-13 09:53:08
○MXmail2.nfoservers.com2018-12-29 → 2018-12-29 · 3 obs
● 2018-12-29 14:19:04
○ 2026-03-24 02:59:16
○ 2026-04-13 09:53:08
●A104.21.74.22026-03-24 → 2026-04-13 · 3 obs
○ 2018-12-29 14:19:04
● 2026-03-24 02:59:16
● 2026-04-13 09:53:08
●A172.67.194.542026-03-24 → 2026-04-13 · 3 obs
○ 2018-12-29 14:19:04
● 2026-03-24 02:59:16
● 2026-04-13 09:53:08
●A2606:4700:3030::ac43:c2362026-03-24 → 2026-04-13 · 3 obs
○ 2018-12-29 14:19:04
● 2026-03-24 02:59:16
● 2026-04-13 09:53:08
●A2606:4700:3035::6815:4a022026-03-24 → 2026-04-13 · 3 obs
○ 2018-12-29 14:19:04
● 2026-03-24 02:59:16
● 2026-04-13 09:53:08
○A72.5.53.82018-12-29 → 2018-12-29 · 3 obs
● 2018-12-29 14:19:04
○ 2026-03-24 02:59:16
○ 2026-04-13 09:53:08

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
iob0.nic.io, a0.nic.io, a2.nic.io, c0.nic.io-
studyum.ioitzel.ns.cloudflare.com, watson.ns.cloudflare.com-

✅ Authoritative Response

Server:162.159.44.23

NS records: itzel.ns.cloudflare.com, watson.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for studyum.io (unsigned zone)

⏱️ Timing

Total: 573ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.194.54, 104.21.74.2
AAAA22606:4700:3035::6815:4a02, 2606:4700:3030::ac43:c236
NS2itzel.ns.cloudflare.com, watson.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1itzel.ns.cloudflare.com dns.cloudflare.c

Analysis

Hierarchy

studyum.io is a parent of www.studyum.io.

IP Addresses

studyum.io resolves to four IPs: 2606:4700:3030::ac43:c236, 2606:4700:3035::6815:4a02, 104.21.74.2 and 172.67.194.54.

Other host names such as kerriellsworth.top, talalayfilms.com, www.zeus-portal.de, deyi88.com and sc-nix.ru share IP numbers with studyum.io.

Name Servers

studyum.io is delegated to two name servers: itzel.ns.cloudflare.com and watson.ns.cloudflare.com.

studyum.io uses the same name server setup as other domains, including gmnc.krd, ibet.ws, gmnc.bz, go88pro.art and gmnc.work.

At least part of the name servers for studyum.io are shared with other domains, for instance celeblounge.net, jxyaxing.com, nnsklv.com, live4dresult.net and cezdesign.pl.

These name servers are often used together with ed.ns.cloudflare.com, jason.ns.cloudflare.com and santino.ns.cloudflare.com.

Host names with six IP numbers:

itzel.ns.cloudflare.com points to: 2606:4700:50::a29f:262a, 2803:f800:50::6ca2:c22a, 2a06:98c1:50::ac40:222a, 108.162.194.42, 162.159.38.42 and 172.64.34.42.

watson.ns.cloudflare.com points to: 2606:4700:58::a29f:2c17, 2803:f800:50::6ca2:c317, 2a06:98c1:50::ac40:2317, 108.162.195.23, 162.159.44.23 and 172.64.35.23.