mcstudanka.cz - robtex.com

mcstudanka.cz

DNSSEC⚠️ Not signed
A2606:4700:3034::6815:431f🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:d3d5🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.67.31Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.211.213🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSmia.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3ac8🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmia.ns.cloudflare.com
A2803:f800:50::6ca2:c0c8🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRmia.ns.cloudflare.com
A2a06:98c1:50::ac40:20c8🇺🇸 Cloudflare2a06:98c1:50::/45
PTRmia.ns.cloudflare.com
A108.162.192.200🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmia.ns.cloudflare.com
A172.64.32.200🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmia.ns.cloudflare.com
A173.245.58.200🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmia.ns.cloudflare.com
NSsam.ns.cloudflare.com
A2606:4700:58::adf5:3b8d🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsam.ns.cloudflare.com
A2803:f800:50::6ca2:c18d🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRsam.ns.cloudflare.com
A2a06:98c1:50::ac40:218d🇺🇸 Cloudflare2a06:98c1:50::/45
PTRsam.ns.cloudflare.com
A108.162.193.141🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsam.ns.cloudflare.com
A172.64.33.141🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsam.ns.cloudflare.com
A173.245.59.141🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsam.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.67.31, 172.67.211.213
IPv6 hints2606:4700:3034::6815:431f, 2606:4700:3035::ac43:d3d5
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=130, name=cloudflare-ech.com
SOAmia.ns.cloudflare.comdns@cloudflare.com serial=2398055009

cz

DNSSEC🔒 Signed (DS record present)
NSa.ns.nic.cz ⭐
NSb.ns.nic.cz
NSc.ns.nic.cz
NSd.ns.nic.cz
SOAa.ns.nic.czhostmaster@nic.cz serial=1776975435

Same first word

mcstudanka.cz

DNS History

10 records (6 active, 4 former)

20162017201820192020202120222023202420252026NSmia.ns.cloudflare.comsam.ns.cloudflare.comns.forpsi.czns.forpsi.itns.forpsi.netA104.21.67.31172.67.211.2132606:4700:3034::6815:431f2606:4700:3035::ac43:d3d581.0.235.135
●NSmia.ns.cloudflare.com2026-02-22 → 2026-04-23 · 3 obs
○ 2017-03-26 19:28:58
● 2026-02-22 10:12:22
● 2026-04-23 20:51:10
○NSns.forpsi.cz2015-05-20 → 2017-03-26 · 4 obs
● 2015-05-20 23:46:10
● 2017-03-26 19:28:58
○ 2026-02-22 10:12:22
○ 2026-04-23 20:51:10
○NSns.forpsi.it2015-05-20 → 2017-03-26 · 4 obs
● 2015-05-20 23:46:10
● 2017-03-26 19:28:58
○ 2026-02-22 10:12:22
○ 2026-04-23 20:51:10
○NSns.forpsi.net2015-05-20 → 2017-03-26 · 4 obs
● 2015-05-20 23:46:10
● 2017-03-26 19:28:58
○ 2026-02-22 10:12:22
○ 2026-04-23 20:51:10
●NSsam.ns.cloudflare.com2026-02-22 → 2026-04-23 · 3 obs
○ 2017-03-26 19:28:58
● 2026-02-22 10:12:22
● 2026-04-23 20:51:10
●A104.21.67.312026-02-22 → 2026-04-23 · 3 obs
○ 2017-03-26 19:28:58
● 2026-02-22 10:12:22
● 2026-04-23 20:51:10
●A172.67.211.2132026-02-22 → 2026-04-23 · 3 obs
○ 2017-03-26 19:28:58
● 2026-02-22 10:12:22
● 2026-04-23 20:51:10
●A2606:4700:3034::6815:431f2026-02-22 → 2026-04-23 · 3 obs
○ 2017-03-26 19:28:58
● 2026-02-22 10:12:22
● 2026-04-23 20:51:10
●A2606:4700:3035::ac43:d3d52026-02-22 → 2026-04-23 · 3 obs
○ 2017-03-26 19:28:58
● 2026-02-22 10:12:22
● 2026-04-23 20:51:10
○A81.0.235.1352015-05-20 → 2017-03-26 · 4 obs
● 2015-05-20 23:46:10
● 2017-03-26 19:28:58
○ 2026-02-22 10:12:22
○ 2026-04-23 20:51:10

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cza.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz-
mcstudanka.czmia.ns.cloudflare.com, sam.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.33.141

NS records: mia.ns.cloudflare.com, sam.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mcstudanka.cz (unsigned zone)

⏱️ Timing

Total: 803ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.67.31, 172.67.211.213
AAAA22606:4700:3034::6815:431f, 2606:4700:3035::ac43:d3d5
NS2mia.ns.cloudflare.com, sam.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1mia.ns.cloudflare.com dns.cloudflare.com

Analysis

IP Addresses

mcstudanka.cz resolves to four IPs: 2606:4700:3034::6815:431f, 2606:4700:3035::ac43:d3d5, 104.21.67.31 and 172.67.211.213.

Other host names such as modspit.com, yomeki.com, www.ovkwebdesign.nl, joindan.ca and basic-bundle-weathered-cake-0269.j-meyer-13.workers.dev share IP numbers with mcstudanka.cz.

Name Servers

mcstudanka.cz is delegated to two name servers: mia.ns.cloudflare.com and sam.ns.cloudflare.com.

mcstudanka.cz uses the same name server setup as other domains, including k2net.com, chatlure.com, ozeanriesen.de, serverplus.com.br and getfeebi.com.

At least part of the name servers for mcstudanka.cz are shared with other domains, for instance mvrater.com, intiny.com.cn, nxqhy.com.cn, maltepehanim.com and alshohooh.ws.

These name servers are commonly used alongside rosalie.ns.cloudflare.com and ricardo.ns.cloudflare.com.

Host names with six IP numbers:

mia.ns.cloudflare.com points to: 2606:4700:50::adf5:3ac8, 2803:f800:50::6ca2:c0c8, 2a06:98c1:50::ac40:20c8, 108.162.192.200, 172.64.32.200 and 173.245.58.200.

sam.ns.cloudflare.com points to: 2606:4700:58::adf5:3b8d, 2803:f800:50::6ca2:c18d, 2a06:98c1:50::ac40:218d, 108.162.193.141, 172.64.33.141 and 173.245.59.141.