cz - robtex.com
cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.ns.nic.cz ⭐ | ||||||
| A | 2001:678:f::1🇨🇿 CZNIC-AS2001:678:f::/48 CZ.NIC, z.s.p.o. - anycast DNS | ||||||
| PTR | a.ns.nic.cz | ||||||
| A | 194.0.12.1🇨🇿 CZNIC-AS194.0.12.0/24 Anycasted .cz DNS servers | ||||||
| PTR | a.ns.nic.cz | ||||||
| NS | b.ns.nic.cz | ||||||
| A | 2001:678:10::1🇨🇿 CZNIC-AS2001:678:10::/48 CZ.NIC, z.s.p.o. - anycast DNS | ||||||
| PTR | b.ns.nic.cz | ||||||
| A | 194.0.13.1🇨🇿 CZNIC-AS194.0.13.0/24 Anycasted .cz DNS servers | ||||||
| PTR | b.ns.nic.cz | ||||||
| NS | c.ns.nic.cz | ||||||
| A | 2001:678:11::1🇨🇿 CZNIC-AS22001:678:11::/48 CZ.NIC, z.s.p.o. - anycast DNS | ||||||
| PTR | c.ns.nic.cz | ||||||
| A | 194.0.14.1🇨🇿 CZNIC-AS2194.0.14.0/24 Anycasted .cz DNS servers | ||||||
| PTR | c.ns.nic.cz | ||||||
| NS | d.ns.nic.cz | ||||||
| A | 2001:678:1::1🇨🇿 CZNIC-AS22001:678:1::/48 CZ.NIC, z.s.p.o. - anycast DNS | ||||||
| PTR | d.ns.nic.cz | ||||||
| A | 193.29.206.1🇨🇿 CZNIC-AS2193.29.206.0/24 Anycasted .cz DNS servers | ||||||
| PTR | d.ns.nic.cz | ||||||
| SOA | a.ns.nic.czhostmaster@nic.cz serial=1776997033 | ||||||
(root)
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.root-servers.net ⭐ ⚠️ Not in parent delegation | ||||||
| NS | b.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | c.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | d.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | e.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | f.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | g.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | h.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | i.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | j.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | k.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | l.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | m.root-servers.net ⚠️ Not in parent delegation | ||||||
| SOA | a.root-servers.netnstld@verisign-grs.com 2026-04-23 #1 | ||||||
Subdomains
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
✅ Authoritative Response
Server:193.29.206.1
NS records: a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 709ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | a.ns.nic.cz, b.ns.nic.cz... |
| SOA | 1 | a.ns.nic.cz hostmaster.nic.cz |
Analysis
Hierarchy
cz is a parent of nibe-shop.cz, josefina.cz, evoco.cz, cegv-cassiopeia.cz, projektdomku.cz and hundreds of thousands of other host names.
Name Servers
cz is delegated to four name servers: a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz and d.ns.nic.cz.
cz at least partially shares name servers with other domains, for instance infosoud.gov.cz, md.gov.cz, 134.43.185.in-addr.arpa, mod.gov.cz and irop.gov.cz.
Host names with two IP numbers: a.ns.nic.cz points to 2001:678:f::1 and 194.0.12.1; b.ns.nic.cz points to 2001:678:10::1 and 194.0.13.1; c.ns.nic.cz points to 2001:678:11::1 and 194.0.14.1; d.ns.nic.cz points to 2001:678:1::1 and 193.29.206.1.