zkn.cz - robtex.com

zkn.cz

DNSSEC🔒 Signed (DS record present)
A2606:4700:3030::6815:592b🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:9c59🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.89.43Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.156.89🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSclark.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b57🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRclark.ns.cloudflare.com
A2803:f800:50::6ca2:c157🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRclark.ns.cloudflare.com
A2a06:98c1:50::ac40:2157🇺🇸 Cloudflare2a06:98c1:50::/45
PTRclark.ns.cloudflare.com
A108.162.193.87🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRclark.ns.cloudflare.com
A172.64.33.87🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRclark.ns.cloudflare.com
A173.245.59.87🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRclark.ns.cloudflare.com
NSetta.ns.cloudflare.com
A2606:4700:50::adf5:3a9c🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRetta.ns.cloudflare.com
A2803:f800:50::6ca2:c09c🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRetta.ns.cloudflare.com
A2a06:98c1:50::ac40:209c🇺🇸 Cloudflare2a06:98c1:50::/45
PTRetta.ns.cloudflare.com
A108.162.192.156🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRetta.ns.cloudflare.com
A172.64.32.156🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRetta.ns.cloudflare.com
A173.245.58.156🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRetta.ns.cloudflare.com
MXkikimora.laddobar.cz ⭐
A2a01:490:16:3::4🇨🇿 NFX_ZSPO2a01:490::/32
PTRkikimora.laddobar.cz
A78.108.102.229🇨🇿 NFX_ZSPO78.108.96.0/20 Neutral Free eXchange members - FreeTel alternate
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.89.43, 172.67.156.89
IPv6 hints2606:4700:3030::6815:592b, 2606:4700:3035::ac43:9c59
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=221, name=cloudflare-ech.com
SOAclark.ns.cloudflare.comdns@cloudflare.com serial=2411227845

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=1786702642

Same first word

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nkz.fr

DNS History

18 records (7 active, 11 former)

200920112013201520172019202120232025NSclark.ns.cloudflare.cometta.ns.cloudflare.comkikimora.laddobar.czsnail.infocity.czstriga.laddobar.czMXkikimora.laddobar.czA104.21.89.43172.67.156.892606:4700:3030::6815:592b2606:4700:3035::ac43:9c59188.114.96.0188.114.97.02606:4700:3033::ac43:9c592606:4700:3034::6815:592b2a06:98c1:3120::2a06:98c1:3121::78.108.102.22982.208.29.226
●NSclark.ns.cloudflare.com2026-04-07 → 2026-08-14 · 3 obs
○ 2017-12-24 02:54:50
● 2026-04-07 14:27:56
● 2026-08-14 11:09:38
●NSetta.ns.cloudflare.com2026-04-07 → 2026-08-14 · 3 obs
○ 2017-12-24 02:54:50
● 2026-04-07 14:27:56
● 2026-08-14 11:09:38
○NSkikimora.laddobar.cz2008-03-27 → 2017-12-24 · 4 obs
● 2008-03-27 07:59:04
● 2017-12-24 02:54:50
○ 2026-04-07 14:27:56
○ 2026-08-14 11:09:38
○NSsnail.infocity.cz2008-03-27 → 2008-03-27 · 3 obs
● 2008-03-27 07:59:04
○ 2015-06-16 01:10:18
○ 2026-08-14 11:09:38
○NSstriga.laddobar.cz2015-06-16 → 2017-12-24 · 5 obs
○ 2008-03-27 07:59:04
● 2015-06-16 01:10:18
● 2017-12-24 02:54:50
○ 2026-04-07 14:27:56
○ 2026-08-14 11:09:38
●MXkikimora.laddobar.cz2008-03-27 → 2026-08-14 · 2 obs
● 2008-03-27 07:59:04
● 2026-08-14 11:09:38
●A104.21.89.432026-04-19 → 2026-08-14 · 9 obs
○ 2026-04-07 14:27:56
● 2026-04-19 15:32:36
● 2026-05-24 09:27:20
○ 2026-05-27 23:34:48
● 2026-05-29 18:25:06
● 2026-06-16 17:31:58
○ 2026-06-18 04:13:08
● 2026-06-21 22:40:44
● 2026-08-14 11:09:38
●A172.67.156.892026-04-19 → 2026-08-14 · 9 obs
○ 2026-04-07 14:27:56
● 2026-04-19 15:32:36
● 2026-05-24 09:27:20
○ 2026-05-27 23:34:48
● 2026-05-29 18:25:06
● 2026-06-16 17:31:58
○ 2026-06-18 04:13:08
● 2026-06-21 22:40:44
● 2026-08-14 11:09:38
○A188.114.96.02026-04-07 → 2026-06-18 · 10 obs
○ 2017-12-24 02:54:50
● 2026-04-07 14:27:56
○ 2026-04-19 15:32:36
○ 2026-05-24 09:27:20
● 2026-05-27 23:34:48
○ 2026-05-29 18:25:06
○ 2026-06-16 17:31:58
● 2026-06-18 04:13:08
○ 2026-06-21 22:40:44
○ 2026-08-14 11:09:38
○A188.114.97.02026-04-07 → 2026-06-18 · 10 obs
○ 2017-12-24 02:54:50
● 2026-04-07 14:27:56
○ 2026-04-19 15:32:36
○ 2026-05-24 09:27:20
● 2026-05-27 23:34:48
○ 2026-05-29 18:25:06
○ 2026-06-16 17:31:58
● 2026-06-18 04:13:08
○ 2026-06-21 22:40:44
○ 2026-08-14 11:09:38
●A2606:4700:3030::6815:592b2026-06-24 → 2026-08-14 · 3 obs
○ 2026-06-21 22:40:44
● 2026-06-24 20:50:40
● 2026-08-14 11:09:38
○A2606:4700:3033::ac43:9c592026-04-19 → 2026-06-21 · 10 obs
○ 2026-04-07 14:27:56
● 2026-04-19 15:32:36
● 2026-05-24 09:27:20
○ 2026-05-27 23:34:48
● 2026-05-29 18:25:06
● 2026-06-16 17:31:58
○ 2026-06-18 04:13:08
● 2026-06-21 22:40:44
○ 2026-06-24 20:50:40
○ 2026-08-14 11:09:38
○A2606:4700:3034::6815:592b2026-04-19 → 2026-06-21 · 10 obs
○ 2026-04-07 14:27:56
● 2026-04-19 15:32:36
● 2026-05-24 09:27:20
○ 2026-05-27 23:34:48
● 2026-05-29 18:25:06
● 2026-06-16 17:31:58
○ 2026-06-18 04:13:08
● 2026-06-21 22:40:44
○ 2026-06-24 20:50:40
○ 2026-08-14 11:09:38
●A2606:4700:3035::ac43:9c592026-06-24 → 2026-08-14 · 3 obs
○ 2026-06-21 22:40:44
● 2026-06-24 20:50:40
● 2026-08-14 11:09:38
○A2a06:98c1:3120::2026-04-07 → 2026-06-18 · 10 obs
○ 2017-12-24 02:54:50
● 2026-04-07 14:27:56
○ 2026-04-19 15:32:36
○ 2026-05-24 09:27:20
● 2026-05-27 23:34:48
○ 2026-05-29 18:25:06
○ 2026-06-16 17:31:58
● 2026-06-18 04:13:08
○ 2026-06-21 22:40:44
○ 2026-08-14 11:09:38
○A2a06:98c1:3121::2026-04-07 → 2026-06-18 · 10 obs
○ 2017-12-24 02:54:50
● 2026-04-07 14:27:56
○ 2026-04-19 15:32:36
○ 2026-05-24 09:27:20
● 2026-05-27 23:34:48
○ 2026-05-29 18:25:06
○ 2026-06-16 17:31:58
● 2026-06-18 04:13:08
○ 2026-06-21 22:40:44
○ 2026-08-14 11:09:38
○A78.108.102.2292015-06-16 → 2017-12-24 · 5 obs
○ 2008-03-27 07:59:04
● 2015-06-16 01:10:18
● 2017-12-24 02:54:50
○ 2026-04-07 14:27:56
○ 2026-08-14 11:09:38
○A82.208.29.2262008-03-27 → 2008-03-27 · 3 obs
● 2008-03-27 07:59:04
○ 2015-06-16 01:10:18
○ 2026-08-14 11:09:38

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cza.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz-
zkn.czetta.ns.cloudflare.com, clark.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.33.87

NS records: etta.ns.cloudflare.com, clark.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 931ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.89.43, 172.67.156.89
AAAA22606:4700:3035::ac43:9c59, 2606:4700:3030::6815:592b
NS2clark.ns.cloudflare.com, etta.ns.cloudflare.com
MX1kikimora.laddobar.cz (pri: 10)
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1clark.ns.cloudflare.com dns.cloudflare.c

Analysis

IP Addresses

zkn.cz directs to four IP numbers, which are 104.21.89.43, 172.67.156.89, 2606:4700:3030::6815:592b and 2606:4700:3035::ac43:9c59.

vanto.com.au, 777x.store, www.cyber-dyne.com plus two other host names have IP numbers in common with zkn.cz.

Name Servers

zkn.cz is served by two delegated name servers, clark.ns.cloudflare.com and etta.ns.cloudflare.com.

The name server configuration of zkn.cz is shared with other domains, for instance zkousky-nanecisto.cz, sd-glass.com.tw, skon.com.tw and two others.

The name servers of zkn.cz overlap at least partially with those of other domains — among them newlogic.io, famed.co, explorethomascole.org and two more.

The name servers keyla.ns.cloudflare.com, vick.ns.cloudflare.com and adi.ns.cloudflare.com are commonly seen alongside these name servers.

Hosts with 6 IP addresses each:

clark.ns.cloudflare.com carries IP addresses 108.162.193.87, 172.64.33.87 and 173.245.59.87, with 3 other addresses beyond those.

etta.ns.cloudflare.com carries IP addresses 108.162.192.156, 172.64.32.156 and 173.245.58.156, with 3 other addresses beyond those.

Mail Servers

zkn.cz uses one mail server — kikimora.laddobar.cz.

The mail server setup of zkn.cz matches that of other domains such as autosoucasti.cz, maloskalskagalerie.cz, 2d-3d.cz and two others.

kikimora.laddobar.cz resolves to two IP numbers — 78.108.102.229 and 2a01:490:16:3::4.