oncon.cz - robtex.com
oncon.cz
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=1776539836 | ||||||
Subdomains
krystof.oncon.cz |
Same first word
Similar names
DNS History
10 records (7 active, 3 former)
●NSns.gransy.com2019-04-20 → 2026-04-18 · 2 obs
● 2026-04-18 19:38:50
●NSns2.gransy.com2019-04-20 → 2026-04-18 · 2 obs
● 2026-04-18 19:38:50
●NSns3.gransy.com2019-04-20 → 2026-04-18 · 2 obs
● 2026-04-18 19:38:50
●NSns4.gransy.com2019-04-20 → 2026-04-18 · 2 obs
● 2026-04-18 19:38:50
●NSns5.gransy.com2019-04-20 → 2026-04-18 · 2 obs
● 2026-04-18 19:38:50
●MXkrystof.oncon.cz2026-03-27 → 2026-04-18 · 3 obs
● 2026-03-27 06:12:32
● 2026-04-18 19:38:50
○MXsofie.oncon.cz2019-04-20 → 2021-10-20 · 4 obs
● 2021-10-20 05:14:24
○ 2026-03-27 06:12:32
○ 2026-04-18 19:38:50
○MXswenia.svetbot.cz2019-04-20 → 2019-04-20 · 3 obs
○ 2021-10-20 05:14:24
○ 2026-04-18 19:38:50
●A185.25.184.1432026-03-27 → 2026-04-18 · 3 obs
● 2026-03-27 06:12:32
● 2026-04-18 19:38:50
○A185.25.185.742019-04-20 → 2021-10-20 · 4 obs
● 2021-10-20 05:14:24
○ 2026-03-27 06:12:32
○ 2026-04-18 19:38:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz, d.ns.nic.cz | - |
| oncon.cz | ns.gransy.com, ns2.gransy.com, ns3.gransy.com, ns4.gransy.com... | - |
✅ Authoritative Response
Server:66.42.94.136
NS records: ns.gransy.com, ns2.gransy.com, ns3.gransy.com, ns4.gransy.com, ns5.gransy.com
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 1344ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 185.25.184.143 |
| NS | 5 | ns2.gransy.com, ns.gransy.com... |
| MX | 1 | krystof.oncon.cz (pri: 10) |
| TXT | 1 | v=spf1 a mx ~all |
| SOA | 1 | ns.gransy.com root.gransy.com |
Analysis
Hierarchy
oncon.cz is parent of krystof.oncon.cz.
IP Addresses
oncon.cz points to a single IP: 185.25.184.143.
Other host names, for instance krystof.oncon.cz, share IP numbers with oncon.cz.
Name Servers
oncon.cz is delegated to five name servers: ns2.gransy.com, ns3.gransy.com, ns4.gransy.com, ns5.gransy.com and ns.gransy.com.
oncon.cz at least partially shares its name servers with other domains, for instance arealpolevsko.cz, zingtravel.cz, ohpollydeutschland.de, dmz-penzion.cz and edjet.net.
These name servers are commonly used with ns2.internetserver.cz, ns.internetserver.cz and ns3.dns-station.net.
Five IP numbers
Host ns2.gransy.com points to 2001:19f0:6801:474:5400:1ff:fec5:8efb, 2001:19f0:7401:81e0:5400:1ff:fec5:8ef6, 95.179.192.121, 217.16.185.221 and 217.69.4.49.
Host ns3.gransy.com points to 2a02:750:7::2e7, 2a02:750:8::32, 46.21.100.103, 77.78.126.35 and 109.74.7.71.
Four IP numbers
Host ns4.gransy.com points to 2001:19f0:5401:69b:5400:1ff:fec5:8f3f, 2a00:1a28:2010:1::89, 66.42.94.136 and 80.67.7.209.
Host ns.gransy.com points to 2001:19f0:5001:1caf:5400:1ff:fec5:8d50, 45.76.90.43, 77.78.104.149 and 95.179.136.180.
Two IP numbers
Host ns5.gransy.com points to 2a02:750:5::538 and 31.192.227.223.
Mail Servers
oncon.cz is served by a single mail server, krystof.oncon.cz.
krystof.oncon.cz points to IP number 185.25.184.143.