knowunity.cz - robtex.com
knowunity.cz
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3031::6815:4ecb🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3036::ac43:8972🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.78.203Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.137.114🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | brett.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::adf5:3b4c🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | brett.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c14c🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | brett.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:214c🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | brett.ns.cloudflare.com | ||||||
| A | 108.162.193.76🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | brett.ns.cloudflare.com | ||||||
| A | 172.64.33.76🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | brett.ns.cloudflare.com | ||||||
| A | 173.245.59.76🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | brett.ns.cloudflare.com | ||||||
| NS | teagan.ns.cloudflare.com | ||||||
| A | 2606:4700:50::a29f:26ae🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | teagan.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c2ae🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | teagan.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:22ae🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | teagan.ns.cloudflare.com | ||||||
| A | 108.162.194.174🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | teagan.ns.cloudflare.com | ||||||
| A | 162.159.38.174Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | teagan.ns.cloudflare.com | ||||||
| A | 172.64.34.174🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | teagan.ns.cloudflare.com | ||||||
| TXT | google-site-verification=bfod7VUvZeEG6NKqdE_v9jiM6RqIRPKX9LOZ8u6Wv9w | ||||||
| TXT | v=spf1 -all | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.78.203, 172.67.137.114 | ||||||
| IPv6 hints | 2606:4700:3031::6815:4ecb, 2606:4700:3036::ac43:8972 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=82, name=cloudflare-ech.com | ||||||
| SOA | brett.ns.cloudflare.comdns@cloudflare.com serial=2401768044 | ||||||
cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.ns.nic.cz ⭐ | ||||||
| NS | b.ns.nic.cz | ||||||
| NS | c.ns.nic.cz | ||||||
| NS | d.ns.nic.cz | ||||||
| SOA | a.ns.nic.czhostmaster@nic.cz serial=1778537856 | ||||||
Same first word
DNS History
6 records (6 active, 0 former)
●NSbrett.ns.cloudflare.com2026-04-27 → 2026-05-11 · 2 obs
● 2026-05-11 22:55:00
●NSteagan.ns.cloudflare.com2026-04-27 → 2026-05-11 · 2 obs
● 2026-05-11 22:55:00
●A104.21.78.2032026-04-27 → 2026-05-11 · 2 obs
● 2026-05-11 22:55:00
●A172.67.137.1142026-04-27 → 2026-05-11 · 2 obs
● 2026-05-11 22:55:00
●A2606:4700:3031::6815:4ecb2026-04-27 → 2026-05-11 · 2 obs
● 2026-05-11 22:55:00
●A2606:4700:3036::ac43:89722026-04-27 → 2026-05-11 · 2 obs
● 2026-05-11 22:55:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| knowunity.cz | teagan.ns.cloudflare.com, brett.ns.cloudflare.com | - |
✅ Authoritative Response
Server:108.162.193.76
NS records: teagan.ns.cloudflare.com, brett.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for knowunity.cz (unsigned zone)
⏱️ Timing
Total: 908ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.137.114, 104.21.78.203 |
| AAAA | 2 | 2606:4700:3036::ac43:8972, 2606:4700:3031::6815:4ecb |
| NS | 2 | brett.ns.cloudflare.com, teagan.ns.cloudflare.com |
| TXT | 2 | google-site-verification=bfod7VUvZeEG6NK, v=spf1 -all |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | brett.ns.cloudflare.com dns.cloudflare.c |
Analysis
IP Addresses
knowunity.cz resolves to four IP numbers: 2606:4700:3031::6815:4ecb, 2606:4700:3036::ac43:8972, 104.21.78.203 and 172.67.137.114.
Other host names such as cxzbwrj.com, tyrapiroferonexis.com, health2218.eu.org, mx.maivisto.com and idcoin188up.xyz share IPs with knowunity.cz.
Name Servers
knowunity.cz is delegated to two name servers: brett.ns.cloudflare.com and teagan.ns.cloudflare.com.
knowunity.cz shares the same name server setup as knowunity.rs, knowunity.com.br, knowunity.nl, knowunity.co and knowunity.ar.
knowunity.cz at least partially shares name servers with other domains, for instance rostmoskva.ru, alterugo.com, satkom.cz, futurecareers.net and qcswb.com.
These name servers are commonly used together with amos.ns.cloudflare.com, carl.ns.cloudflare.com and dawn.ns.cloudflare.com.
Host names with six IP numbers:
brett.ns.cloudflare.com points to 2606:4700:58::adf5:3b4c, 2803:f800:50::6ca2:c14c, 2a06:98c1:50::ac40:214c, 108.162.193.76, 172.64.33.76 and 173.245.59.76.
teagan.ns.cloudflare.com points to 2606:4700:50::a29f:26ae, 2803:f800:50::6ca2:c2ae, 2a06:98c1:50::ac40:22ae, 108.162.194.174, 162.159.38.174 and 172.64.34.174.