studizen.co - robtex.com

studizen.co

DNSSEC⚠️ Not signed
A2606:4700:3031::ac43:dd6a🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3032::6815:3333🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.51.51Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.221.106🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSelly.ns.cloudflare.com ⭐
A2606:4700:50::a29f:26f6🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRelly.ns.cloudflare.com
A2803:f800:50::6ca2:c2f6🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRelly.ns.cloudflare.com
A2a06:98c1:50::ac40:22f6🇺🇸 Cloudflare2a06:98c1:50::/45
PTRelly.ns.cloudflare.com
A108.162.194.246🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRelly.ns.cloudflare.com
A162.159.38.246Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRelly.ns.cloudflare.com
A172.64.34.246🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRelly.ns.cloudflare.com
NSpedro.ns.cloudflare.com
A2606:4700:58::a29f:2cb7🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRpedro.ns.cloudflare.com
A2803:f800:50::6ca2:c3b7🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRpedro.ns.cloudflare.com
A2a06:98c1:50::ac40:23b7🇺🇸 Cloudflare2a06:98c1:50::/45
PTRpedro.ns.cloudflare.com
A108.162.195.183🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRpedro.ns.cloudflare.com
A162.159.44.183Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRpedro.ns.cloudflare.com
A172.64.35.183🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRpedro.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.51.51, 172.67.221.106
IPv6 hints2606:4700:3031::ac43:dd6a, 2606:4700:3032::6815:3333
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=59, name=cloudflare-ech.com
SOAelly.ns.cloudflare.comdns@cloudflare.com serial=2397054997

co

DNSSEC🔒 Signed (DS record present)
NSns0.centralnic.net ⭐
NSa.registrydns.co
NSb.registrydns.co
NSc.registrydns.co
NSd.registrydns.co
SOAns0.centralnic.nethostmaster@centralnic.net serial=1759632110

Subdomains

www.studizen.co

Same first word

studizen.co

Similar names

szunited.com
zestudni.com
szunited.cn
zestudni.pl

DNS History

17 records (6 active, 11 former)

201820192020202120222023202420252026NSelly.ns.cloudflare.compedro.ns.cloudflare.comns-138.awsdns-17.comns-1404.awsdns-47.orgns-1665.awsdns-16.co.ukns-710.awsdns-24.netMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comA104.21.51.51172.67.221.1062606:4700:3031::ac43:dd6a2606:4700:3032::6815:333352.18.247.17052.214.201.63
●NSelly.ns.cloudflare.com2026-04-07 → 2026-04-12 · 3 obs
○ 2017-07-04 15:26:48
● 2026-04-07 20:07:14
● 2026-04-12 08:05:46
○NSns-138.awsdns-17.com2017-07-04 → 2017-07-04 · 3 obs
● 2017-07-04 15:26:48
○ 2026-04-07 20:07:14
○ 2026-04-12 08:05:46
○NSns-1404.awsdns-47.org2017-07-04 → 2017-07-04 · 3 obs
● 2017-07-04 15:26:48
○ 2026-04-07 20:07:14
○ 2026-04-12 08:05:46
○NSns-1665.awsdns-16.co.uk2017-07-04 → 2017-07-04 · 3 obs
● 2017-07-04 15:26:48
○ 2026-04-07 20:07:14
○ 2026-04-12 08:05:46
○NSns-710.awsdns-24.net2017-07-04 → 2017-07-04 · 3 obs
● 2017-07-04 15:26:48
○ 2026-04-07 20:07:14
○ 2026-04-12 08:05:46
●NSpedro.ns.cloudflare.com2026-04-07 → 2026-04-12 · 3 obs
○ 2017-07-04 15:26:48
● 2026-04-07 20:07:14
● 2026-04-12 08:05:46
○MXalt1.aspmx.l.google.com2017-07-04 → 2017-07-04 · 3 obs
● 2017-07-04 15:26:48
○ 2026-04-07 20:07:14
○ 2026-04-12 08:05:46
○MXalt2.aspmx.l.google.com2017-07-04 → 2017-07-04 · 3 obs
● 2017-07-04 15:26:48
○ 2026-04-07 20:07:14
○ 2026-04-12 08:05:46
○MXaspmx.l.google.com2017-07-04 → 2017-07-04 · 3 obs
● 2017-07-04 15:26:48
○ 2026-04-07 20:07:14
○ 2026-04-12 08:05:46
○MXaspmx2.googlemail.com2017-07-04 → 2017-07-04 · 3 obs
● 2017-07-04 15:26:48
○ 2026-04-07 20:07:14
○ 2026-04-12 08:05:46
○MXaspmx3.googlemail.com2017-07-04 → 2017-07-04 · 3 obs
● 2017-07-04 15:26:48
○ 2026-04-07 20:07:14
○ 2026-04-12 08:05:46
●A104.21.51.512026-04-07 → 2026-04-12 · 3 obs
○ 2017-07-04 15:26:48
● 2026-04-07 20:07:14
● 2026-04-12 08:05:46
●A172.67.221.1062026-04-07 → 2026-04-12 · 3 obs
○ 2017-07-04 15:26:48
● 2026-04-07 20:07:14
● 2026-04-12 08:05:46
●A2606:4700:3031::ac43:dd6a2026-04-07 → 2026-04-12 · 3 obs
○ 2017-07-04 15:26:48
● 2026-04-07 20:07:14
● 2026-04-12 08:05:46
●A2606:4700:3032::6815:33332026-04-07 → 2026-04-12 · 3 obs
○ 2017-07-04 15:26:48
● 2026-04-07 20:07:14
● 2026-04-12 08:05:46
○A52.18.247.1702017-07-04 → 2017-07-04 · 3 obs
● 2017-07-04 15:26:48
○ 2026-04-07 20:07:14
○ 2026-04-12 08:05:46
○A52.214.201.632017-07-04 → 2017-07-04 · 3 obs
● 2017-07-04 15:26:48
○ 2026-04-07 20:07:14
○ 2026-04-12 08:05:46

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coa.registrydns.co, b.registrydns.co, c.registrydns.co, d.registrydns.co-
studizen.copedro.ns.cloudflare.com, elly.ns.cloudflare.com-

✅ Authoritative Response

Server:162.159.38.246

NS records: pedro.ns.cloudflare.com, elly.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for studizen.co (unsigned zone)

⏱️ Timing

Total: 546ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.51.51, 172.67.221.106
AAAA22606:4700:3031::ac43:dd6a, 2606:4700:3032::6815:3333
NS2elly.ns.cloudflare.com, pedro.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1elly.ns.cloudflare.com dns.cloudflare.co

Analysis

Hierarchy

studizen.co is the parent of www.studizen.co.

IP Addresses

Four IP numbers are pointed to by studizen.co: 2606:4700:3031::ac43:dd6a, 2606:4700:3032::6815:3333, 104.21.51.51 and 172.67.221.106.

other host names including mew.co, phonelineapp.com, dragstars.ch, tadmor-school.co.il and newns.cjenmgames.com share IP numbers with studizen.co.

Name Servers

studizen.co is delegated to two name servers elly.ns.cloudflare.com and pedro.ns.cloudflare.com.

studizen.co shares the same name server setup as other domains, for instance linkin1.com, hiverbeers.com, bandung4de.sbs, phathong.com and bayutogele.sbs.

studizen.co at least partially shares name servers with other domains, for instance kk3pomnvbghyuy.com, easysalepage.in.th, somafacil.com.br, advichanger.workers.dev and race-courses.co.uk.

these name servers are often used together with fatima.ns.cloudflare.com, jasper.ns.cloudflare.com, princess.ns.cloudflare.com and ruben.ns.cloudflare.com.

Host names with six IP numbers:

Host name elly.ns.cloudflare.com points to: 2606:4700:50::a29f:26f6, 2803:f800:50::6ca2:c2f6, 2a06:98c1:50::ac40:22f6, 108.162.194.246, 162.159.38.246 and 172.64.34.246.

Host name pedro.ns.cloudflare.com points to: 2606:4700:58::a29f:2cb7, 2803:f800:50::6ca2:c3b7, 2a06:98c1:50::ac40:23b7, 108.162.195.183, 162.159.44.183 and 172.64.35.183.