ct3.cz - robtex.com
ct3.cz
| DNSSEC | ⚠️ Not signed | ||||||
| A | 85.239.68.14🇨🇿 SK-TELEKOM85.239.68.0/24 | ||||||
| A | 85.239.69.14🇨🇿 SK-TELEKOM85.239.69.0/24 | ||||||
| A | 85.239.69.137🇨🇿 SK-TELEKOM85.239.69.0/24 | ||||||
| NS | ns2.sysct.cz ⭐ | ||||||
| A | 85.239.69.39🇨🇿 SK-TELEKOM85.239.69.0/24 | ||||||
| NS | ns3.sysct.cz | ||||||
| A | 85.239.64.136🇨🇿 Ceska_televize85.239.64.0/24 Ceska televize segment 1 | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | ns2.sysct.czroot@sysct.cz 2024-10-10 #4 | ||||||
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=1774626437 | ||||||
Same first word
Similar names
DNS History
9 records (5 active, 4 former)
○NSns1.czech-tv.cz2015-08-14 → 2016-12-02 · 4 obs
● 2016-12-02 15:26:18
○ 2026-03-26 13:35:26
○ 2026-03-27 16:18:44
○NSns2.czech-tv.cz2015-08-14 → 2016-12-02 · 4 obs
● 2016-12-02 15:26:18
○ 2026-03-26 13:35:26
○ 2026-03-27 16:18:44
●NSns2.sysct.cz2026-03-26 → 2026-03-27 · 3 obs
● 2026-03-26 13:35:26
● 2026-03-27 16:18:44
○NSns3.czech-tv.cz2015-08-14 → 2016-12-02 · 4 obs
● 2016-12-02 15:26:18
○ 2026-03-26 13:35:26
○ 2026-03-27 16:18:44
●NSns3.sysct.cz2026-03-26 → 2026-03-27 · 3 obs
● 2026-03-26 13:35:26
● 2026-03-27 16:18:44
○A212.47.2.2092015-08-14 → 2016-12-02 · 4 obs
● 2016-12-02 15:26:18
○ 2026-03-26 13:35:26
○ 2026-03-27 16:18:44
●A85.239.68.142026-03-26 → 2026-03-27 · 3 obs
● 2026-03-26 13:35:26
● 2026-03-27 16:18:44
●A85.239.69.1372026-03-26 → 2026-03-27 · 3 obs
● 2026-03-26 13:35:26
● 2026-03-27 16:18:44
●A85.239.69.142026-03-26 → 2026-03-27 · 3 obs
● 2026-03-26 13:35:26
● 2026-03-27 16:18:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | b.ns.nic.cz, d.ns.nic.cz, a.ns.nic.cz, c.ns.nic.cz | 8 records |
| ct3.cz | ns2.sysct.cz, ns3.sysct.cz | 2 records |
✅ Authoritative Response
Server:85.239.69.39
NS records: ns2.sysct.cz, ns3.sysct.cz
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ct3.cz (unsigned zone)
⏱️ Timing
Total: 545ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 3 | 85.239.68.14, 85.239.69.14... |
| NS | 2 | ns2.sysct.cz, ns3.sysct.cz |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | ns2.sysct.cz root.sysct.cz |
📌 Glue Records Collected
Total: 10
In-bailiwick: 8 (d.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz...)
Out-of-bailiwick: 2 (ns3.sysct.cz, ns2.sysct.cz)
Analysis
IP Addresses
ct3.cz points to three IPs: 85.239.68.14, 85.239.69.14 and 85.239.69.137.
Other host names such as ivysilani.cz, hydeparkct24.cz, sportzive.cz, www.ztw.cz and ct24.cz share IPs with ct3.cz.
Name Servers
Two name servers ns2.sysct.cz and ns3.sysct.cz handle the delegation for ct3.cz.
ct3.cz shares the same name server setup as other domains, for example ct4sport.cz, festivalzlatapraha.cz, dcko.cz, tajemstvi-rodu.cz and ct1.cz.
ct3.cz shares name servers with other domains at least partially, for instance int.sysct.cz.
Host names with one IP number:
ns2.sysct.cz points to 85.239.69.39; ns3.sysct.cz points to 85.239.64.136.