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=1781304437 | ||||||
(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 2026-06-12 #2 | ||||||
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:194.0.12.1
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: 771ms | 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
The domain cz is the 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 shares at least some of its name servers with other domains, including iksp.gov.cz, infosoud.gov.cz, md.gov.cz and two others.
The host names a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz and d.ns.nic.cz each resolve to two IP addresses: a.ns.nic.cz resolves to 194.0.12.1 and 2001:678:f::1; b.ns.nic.cz resolves to 194.0.13.1 and 2001:678:10::1; c.ns.nic.cz resolves to 194.0.14.1 and 2001:678:11::1; d.ns.nic.cz resolves to 193.29.206.1 and 2001:678:1::1.