knowunity.cz - dns.ninja

knowunity.cz

DNSSEC⚠️ Not signed
A2606:4700:3034::6815:4ecbπŸ‡ΊπŸ‡Έ Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A2606:4700:3036::ac43:8972πŸ‡ΊπŸ‡Έ Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A104.21.78.203Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A172.67.137.114πŸ‡ΊπŸ‡Έ Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
NSbrett.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b4cπŸ‡ΊπŸ‡Έ Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbrett.ns.cloudflare.com
A2803:f800:50::6ca2:c14cπŸ‡¨πŸ‡· Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRbrett.ns.cloudflare.com
A2a06:98c1:50::ac40:214cπŸ‡ΊπŸ‡Έ Cloudflare2a06:98c1:50::/45
PTRbrett.ns.cloudflare.com
A108.162.193.76πŸ‡ΊπŸ‡Έ Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbrett.ns.cloudflare.com
A172.64.33.76πŸ‡ΊπŸ‡Έ Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbrett.ns.cloudflare.com
A173.245.59.76πŸ‡ΊπŸ‡Έ Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbrett.ns.cloudflare.com
NSteagan.ns.cloudflare.com
A2606:4700:50::a29f:26aeπŸ‡ΊπŸ‡Έ Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRteagan.ns.cloudflare.com
A2803:f800:50::6ca2:c2aeπŸ‡¨πŸ‡· Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRteagan.ns.cloudflare.com
A2a06:98c1:50::ac40:22aeπŸ‡ΊπŸ‡Έ Cloudflare2a06:98c1:50::/45
PTRteagan.ns.cloudflare.com
A108.162.194.174πŸ‡ΊπŸ‡Έ Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRteagan.ns.cloudflare.com
A162.159.38.174Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRteagan.ns.cloudflare.com
A172.64.34.174πŸ‡ΊπŸ‡Έ Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRteagan.ns.cloudflare.com
TXTgoogle-site-verification=bfod7VUvZeEG6NKqdE_v9jiM6RqIRPKX9LOZ8u6Wv9w
TXTv=spf1 -all
HTTPSHTTP/3, HTTP/2 βœ“ hints match
IPv4 hints104.21.78.203, 172.67.137.114
IPv6 hints2606:4700:3034::6815:4ecb, 2606:4700:3036::ac43:8972
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=18, name=cloudflare-ech.com
SOAbrett.ns.cloudflare.comdns@cloudflare.com serial=2405561191

cz

DNSSECπŸ”’ 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=1782888438

Same first word

Similar names

DNS History

7 records (6 active, 1 former)

NSbrett.ns.cloudflare.comteagan.ns.cloudflare.comA104.21.78.203172.67.137.1142606:4700:3034::6815:4ecb2606:4700:3036::ac43:89722606:4700:3031::6815:4ecb
●NSbrett.ns.cloudflare.com2026-04-27 β†’ 2026-07-01 Β· 2 obs
● 2026-04-27 12:05:18
● 2026-07-01 08:01:28
●NSteagan.ns.cloudflare.com2026-04-27 β†’ 2026-07-01 Β· 2 obs
● 2026-04-27 12:05:18
● 2026-07-01 08:01:28
●A104.21.78.2032026-04-27 β†’ 2026-07-01 Β· 2 obs
● 2026-04-27 12:05:18
● 2026-07-01 08:01:28
●A172.67.137.1142026-04-27 β†’ 2026-07-01 Β· 2 obs
● 2026-04-27 12:05:18
● 2026-07-01 08:01:28
β—‹A2606:4700:3031::6815:4ecb2026-04-27 β†’ 2026-06-12 Β· 4 obs
● 2026-04-27 12:05:18
● 2026-06-12 04:21:22
β—‹ 2026-06-24 15:22:06
β—‹ 2026-07-01 08:01:28
●A2606:4700:3034::6815:4ecb2026-06-24 β†’ 2026-07-01 Β· 3 obs
β—‹ 2026-06-12 04:21:22
● 2026-06-24 15:22:06
● 2026-07-01 08:01:28
●A2606:4700:3036::ac43:89722026-04-27 β†’ 2026-07-01 Β· 2 obs
● 2026-04-27 12:05:18
● 2026-07-01 08:01:28

πŸ” DNS Trace

πŸ“‹ Delegation Chain

ZoneNameserversGlue
cza.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz-
knowunity.czbrett.ns.cloudflare.com, teagan.ns.cloudflare.com-

βœ… Authoritative Response

Server:108.162.193.76

NS records: brett.ns.cloudflare.com, teagan.ns.cloudflare.com

πŸ”’ DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for knowunity.cz (unsigned zone)

⏱️ Timing

Total: 951ms | Queries: -

πŸ“„ Records

TypeCountSample Data
A2104.21.78.203, 172.67.137.114
AAAA22606:4700:3034::6815:4ecb, 2606:4700:3036::ac43:8972
NS2brett.ns.cloudflare.com, teagan.ns.cloudflare.com
TXT2google-site-verification=bfod7VUvZeEG6NK, v=spf1 -all
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1brett.ns.cloudflare.com dns.cloudflare.c

Analysis

IP Addresses

knowunity.cz directs to four IP numbers, which are 104.21.78.203, 172.67.137.114, 2606:4700:3034::6815:4ecb and 2606:4700:3036::ac43:8972.

cxzbwrj.com, zwavepublic.com, tyrapiroferonexis.com and two other host names share IP numbers with knowunity.cz.

Name Servers

Two name servers handle the delegation for knowunity.cz: brett.ns.cloudflare.com and teagan.ns.cloudflare.com.

knowunity.cz uses the same name servers as several other domains β€” among them knowunity.rs, knowunity.gr, knowunity.com.br and two more.

At least some of knowunity.cz's name servers are shared with other domains, for example alterugo.com, satkom.cz, futurecareers.net and two more.

It is common for these name servers to be used in conjunction with the name servers amos.ns.cloudflare.com, carl.ns.cloudflare.com and dawn.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

brett.ns.cloudflare.com resolves to 108.162.193.76, 172.64.33.76 and 173.245.59.76 among others, with 3 other IP addresses in total.

teagan.ns.cloudflare.com resolves to 108.162.194.174, 162.159.38.174 and 172.64.34.174 among others, with 3 other IP addresses in total.