duv.cz - robtex.com

duv.cz

DNSSEC⚠️ Not signed
NSns1.one.cz ⚠️ Not in zone NS records
A2001:470:6f:864::1πŸ‡ΊπŸ‡Έ HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA
PTRns1.one.cz
A46.149.113.151πŸ‡¨πŸ‡Ώ ALFSERVIS-AS46.149.112.0/20 Route object 1 AlfServis s.r.o.
PTRns1.one.cz
NSns2.one.cz ⚠️ Not in zone NS records
A193.85.20.140πŸ‡¨πŸ‡Ώ TMOBILE-CZ193.85.0.0/16 T-Mobile Czech Republic a.s.
PTRns2.one.cz
NSns3.one.cz ⚠️ Not in zone NS records
A2001:470:6f:30f::1:1πŸ‡ΊπŸ‡Έ HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA
PTRns3.one.cz
A46.149.113.187πŸ‡¨πŸ‡Ώ ALFSERVIS-AS46.149.112.0/20 Route object 1 AlfServis s.r.o.
PTRns3.one.cz

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=1783073839

Same first word

Similar names

DNS History

3 records (3 active, 0 former)

NSns1.one.czns2.one.czns3.one.cz
●NSns1.one.cz2026-06-13 β†’ 2026-07-03 Β· 2 obs
● 2026-06-13 09:17:46
● 2026-07-03 10:24:46
●NSns2.one.cz2026-06-13 β†’ 2026-07-03 Β· 2 obs
● 2026-06-13 09:17:46
● 2026-07-03 10:24:46
●NSns3.one.cz2026-06-13 β†’ 2026-07-03 Β· 2 obs
● 2026-06-13 09:17:46
● 2026-07-03 10:24:46

πŸ” DNS Trace

πŸ“‹ Delegation Chain

ZoneNameserversGlue
cza.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz, d.ns.nic.cz8 records
duv.czns3.one.cz, ns1.one.cz, ns2.one.cz5 records

βœ… Authoritative Response

Server:193.85.20.140

NS records: ns3.one.cz, ns1.one.cz, ns2.one.cz

πŸ”’ DNSSEC Status

❌ Bogus (DNSSEC validation failed)

No DNSKEY for duv.cz

⏱️ Timing

Total: 1103ms | Queries: -

πŸ“„ Records

TypeCountSample Data

πŸ“Œ Glue Records Collected

Total: 13

In-bailiwick: 8 (a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz...)

Out-of-bailiwick: 5 (ns3.one.cz, ns2.one.cz, ns1.one.cz...)

Analysis

Name Servers

duv.cz is delegated to three name servers: ns1.one.cz, ns2.one.cz and ns3.one.cz.

At least some of duv.cz's name servers are shared with other domains, for example infra.cz, penzionybrno.cz, dovolena.eu and two more.

Host names that have two IP addresses:

ns1.one.cz points to 46.149.113.151 and 2001:470:6f:864::1.

ns3.one.cz points to 46.149.113.187 and 2001:470:6f:30f::1:1.

Host names that point to one IP address:

ns2.one.cz points to 193.85.20.140.