s3c.cz - robtex.com

s3c.cz

DNSSEC⚠️ Not signed
A2606:4700:3036::6815:dd🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::ac43:8055🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.0.221Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.128.85🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSblair.ns.cloudflare.com ⭐
A2606:4700:50::a29f:2679🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRblair.ns.cloudflare.com
A2803:f800:50::6ca2:c279🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRblair.ns.cloudflare.com
A2a06:98c1:50::ac40:2279🇺🇸 Cloudflare2a06:98c1:50::/45
PTRblair.ns.cloudflare.com
A108.162.194.121🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRblair.ns.cloudflare.com
A162.159.38.121Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRblair.ns.cloudflare.com
A172.64.34.121🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRblair.ns.cloudflare.com
NSbryce.ns.cloudflare.com
A2606:4700:58::a29f:2c89🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbryce.ns.cloudflare.com
A2803:f800:50::6ca2:c389🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRbryce.ns.cloudflare.com
A2a06:98c1:50::ac40:2389🇺🇸 Cloudflare2a06:98c1:50::/45
PTRbryce.ns.cloudflare.com
A108.162.195.137🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbryce.ns.cloudflare.com
A162.159.44.137Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbryce.ns.cloudflare.com
A172.64.35.137🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbryce.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.0.221, 172.67.128.85
IPv6 hints2606:4700:3036::6815:dd, 2606:4700:3036::ac43:8055
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=14, name=cloudflare-ech.com
SOAblair.ns.cloudflare.comdns@cloudflare.com serial=2403657957

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=1778462235

Same first word

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Similar names

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cs3.com.cn
c3s.at
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cs3.mobi
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sc3.mx
3cs.us
3sc.com.br
cs3.com
cs3.com.tr
c3s.ca
3sc.mobi
cs3.fr
c3s.com.au
3cs.com.tw
c3s.ru
c3s.co.uk
c3s.com.sg

DNS History

10 records (6 active, 4 former)

20192020202120222023202420252026NSblair.ns.cloudflare.combryce.ns.cloudflare.comns2.vshosting.czwebproduction.vshosting.czMXmail.s3c.czA104.21.0.221172.67.128.852606:4700:3036::6815:dd2606:4700:3036::ac43:805589.185.237.224
●NSblair.ns.cloudflare.com2026-04-06 → 2026-05-11 · 3 obs
○ 2018-05-10 02:58:42
● 2026-04-06 19:46:14
● 2026-05-11 01:48:58
●NSbryce.ns.cloudflare.com2026-04-06 → 2026-05-11 · 3 obs
○ 2018-05-10 02:58:42
● 2026-04-06 19:46:14
● 2026-05-11 01:48:58
○NSns2.vshosting.cz2018-05-10 → 2018-05-10 · 3 obs
● 2018-05-10 02:58:42
○ 2026-04-06 19:46:14
○ 2026-05-11 01:48:58
○NSwebproduction.vshosting.cz2018-05-10 → 2018-05-10 · 3 obs
● 2018-05-10 02:58:42
○ 2026-04-06 19:46:14
○ 2026-05-11 01:48:58
○MXmail.s3c.cz2018-05-10 → 2018-05-10 · 3 obs
● 2018-05-10 02:58:42
○ 2026-04-06 19:46:14
○ 2026-05-11 01:48:58
●A104.21.0.2212026-04-06 → 2026-05-11 · 3 obs
○ 2018-05-10 02:58:42
● 2026-04-06 19:46:14
● 2026-05-11 01:48:58
●A172.67.128.852026-04-06 → 2026-05-11 · 3 obs
○ 2018-05-10 02:58:42
● 2026-04-06 19:46:14
● 2026-05-11 01:48:58
●A2606:4700:3036::6815:dd2026-04-06 → 2026-05-11 · 3 obs
○ 2018-05-10 02:58:42
● 2026-04-06 19:46:14
● 2026-05-11 01:48:58
●A2606:4700:3036::ac43:80552026-04-06 → 2026-05-11 · 3 obs
○ 2018-05-10 02:58:42
● 2026-04-06 19:46:14
● 2026-05-11 01:48:58
○A89.185.237.2242018-05-10 → 2018-05-10 · 3 obs
● 2018-05-10 02:58:42
○ 2026-04-06 19:46:14
○ 2026-05-11 01:48:58

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
czc.ns.nic.cz, b.ns.nic.cz, a.ns.nic.cz, d.ns.nic.cz-
s3c.czbryce.ns.cloudflare.com, blair.ns.cloudflare.com-

✅ Authoritative Response

Server:108.162.194.121

NS records: bryce.ns.cloudflare.com, blair.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for s3c.cz (unsigned zone)

⏱️ Timing

Total: 712ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.0.221, 172.67.128.85
AAAA22606:4700:3036::6815:dd, 2606:4700:3036::ac43:8055
NS2blair.ns.cloudflare.com, bryce.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1blair.ns.cloudflare.com dns.cloudflare.c

Analysis

IP Addresses

s3c.cz resolves to four IPs: 2606:4700:3036::6815:dd, 2606:4700:3036::ac43:8055, 104.21.0.221 and 172.67.128.85.

Other host names such as agoraline.biz, xalumesimumpartners.click, xcmd.net, listoftablets.com and atspa.com share IP numbers with s3c.cz.

Name Servers

s3c.cz is delegated to two name servers: blair.ns.cloudflare.com and bryce.ns.cloudflare.com.

s3c.cz uses the same name server setup as other domains, including (0x706f726e)zc.shop, (0x706f726e)o(0x736578)b.shop, scorchio.casa, nanomusic.co.kr and kubesmith.app.

At least part of the name servers for s3c.cz are shared with other domains, for instance moviespure.com, yoyoo.net, globalresidenceindex.com, dailllycoffee.site and nextw.com.

Host names with six IP numbers:

blair.ns.cloudflare.com points to: 2606:4700:50::a29f:2679, 2803:f800:50::6ca2:c279, 2a06:98c1:50::ac40:2279, 108.162.194.121, 162.159.38.121 and 172.64.34.121.

bryce.ns.cloudflare.com points to: 2606:4700:58::a29f:2c89, 2803:f800:50::6ca2:c389, 2a06:98c1:50::ac40:2389, 108.162.195.137, 162.159.44.137 and 172.64.35.137.