bittner.cz - robtex.com
bittner.cz
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2a01:430:3c:11::160:34🇨🇿 MASTER-AS2a01:430::/32 MASTER-IPV6-1-MAI-CZ | ||||||
| A | 185.145.160.34🇨🇿 MASTER-AS185.145.160.0/22 CZ-ETNETERA-20160401 | ||||||
| NS | ns1.etn.cz ⭐ | ||||||
| A | 2a01:430:3c:1:34::21🇨🇿 MASTER-AS2a01:430::/32 MASTER-IPV6-1-MAI-CZ | ||||||
| PTR | ns1.etn.cz | ||||||
| A | 178.238.34.21🇨🇿 MASTER-AS178.238.32.0/20 CZ-MASTER-20100712 | ||||||
| PTR | ns1.etn.cz | ||||||
| NS | ns3.etnetera.eu | ||||||
| A | 4.182.218.254🇩🇪 Microsoft4.176.0.0/12 MICROSOFT | ||||||
| SOA | ns1.etn.cznoc@etnetera.cz 2025-05-20 #1 | ||||||
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=1775949452 | ||||||
Same first word
Similar names
DNS History
7 records (4 active, 3 former)
○NSns.etnetera.cz2015-07-12 → 2017-03-21 · 4 obs
● 2017-03-21 22:44:14
○ 2026-03-11 16:18:48
○ 2026-04-11 23:40:48
●NSns1.etn.cz2026-03-11 → 2026-04-11 · 3 obs
● 2026-03-11 16:18:48
● 2026-04-11 23:40:48
●NSns3.etnetera.eu2026-03-11 → 2026-04-11 · 3 obs
● 2026-03-11 16:18:48
● 2026-04-11 23:40:48
○NSsns.etnetera.cz2015-07-12 → 2017-03-21 · 4 obs
● 2017-03-21 22:44:14
○ 2026-03-11 16:18:48
○ 2026-04-11 23:40:48
○A178.238.35.1012015-07-12 → 2017-03-21 · 4 obs
● 2017-03-21 22:44:14
○ 2026-03-11 16:18:48
○ 2026-04-11 23:40:48
●A185.145.160.342026-03-11 → 2026-04-11 · 3 obs
● 2026-03-11 16:18:48
● 2026-04-11 23:40:48
●A2a01:430:3c:11::160:342026-03-11 → 2026-04-11 · 3 obs
● 2026-03-11 16:18:48
● 2026-04-11 23:40:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| bittner.cz | ns1.etn.cz, ns3.etnetera.eu | 2 records |
✅ Authoritative Response
Server:178.238.34.21
NS records: ns1.etn.cz, ns3.etnetera.eu
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for bittner.cz (unsigned zone)
⏱️ Timing
Total: 1192ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 185.145.160.34 |
| AAAA | 1 | 2a01:430:3c:11::160:34 |
| NS | 2 | ns3.etnetera.eu, ns1.etn.cz |
| SOA | 1 | ns1.etn.cz noc.etnetera.cz |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.etn.cz, ns1.etn.cz)
Analysis
IP Addresses
bittner.cz points to two IPs: 2a01:430:3c:11::160:34 and 185.145.160.34.
Other host names, for instance kavarna.cz, kucharka.cz, fit.cz, etnetera.info and et-netera.cz share IP numbers with bittner.cz.
Name Servers
Two name servers ns1.etn.cz and ns3.etnetera.eu are delegated to bittner.cz.
bittner.cz uses the same name server configuration as other domains, such as paycenter.cz, mobileone.cz, kavarna.cz, kucharka.cz and multimedia.cz.
bittner.cz at least partially shares name servers with other domains such as etnetera.eu, et-netera.com, paycenter.eu, etnetera.biz and etnetera.info.
these name servers are commonly used with the name servers ns2.etn.cz.
Host names by IP count:
Two IP numbers: The host name ns1.etn.cz points to 2a01:430:3c:1:34::21 and 178.238.34.21.
One IP number: The host name ns3.etnetera.eu points to 4.182.218.254.