defcon.cz - robtex.com
defcon.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=1784693846 | ||||||
Same first word
Similar names
DNS History
9 records (8 active, 1 former)
●NSns1.regzone.cz2015-06-17 → 2026-07-22 · 2 obs
● 2026-07-22 05:07:52
●NSns1.regzone.de2015-06-17 → 2026-07-22 · 2 obs
● 2026-07-22 05:07:52
●NSns1.regzone.info2015-06-17 → 2026-07-22 · 2 obs
● 2026-07-22 05:07:52
●MX10mx.zoner.com2015-06-17 → 2026-07-22 · 5 obs
● 2026-06-13 09:42:28
○ 2026-06-17 11:28:50
● 2026-06-28 02:25:22
● 2026-07-22 05:07:52
●MX15mx.zoner.com2015-06-17 → 2026-07-22 · 5 obs
● 2026-06-13 09:42:28
○ 2026-06-17 11:28:50
● 2026-06-28 02:25:22
● 2026-07-22 05:07:52
●MXrelay.zoner.com2015-06-17 → 2026-07-22 · 5 obs
● 2026-06-13 09:42:28
○ 2026-06-17 11:28:50
● 2026-06-28 02:25:22
● 2026-07-22 05:07:52
●A217.198.113.1042026-06-13 → 2026-07-22 · 5 obs
● 2026-06-13 09:42:28
○ 2026-06-17 11:28:50
● 2026-06-28 02:25:22
● 2026-07-22 05:07:52
○A217.198.116.1882015-06-17 → 2016-08-25 · 4 obs
● 2016-08-25 18:49:30
○ 2026-06-13 09:42:28
○ 2026-07-22 05:07:52
●A2a00:19a0:3:71:0:d9c6:7168:12026-06-13 → 2026-07-22 · 5 obs
● 2026-06-13 09:42:28
○ 2026-06-17 11:28:50
● 2026-06-28 02:25:22
● 2026-07-22 05:07:52
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | d.ns.nic.cz, a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz | 8 records |
| defcon.cz | ns1.regzone.cz, ns1.regzone.de, ns1.regzone.info | 2 records |
✅ Authoritative Response
Server:217.198.113.10
NS records: ns1.regzone.cz, ns1.regzone.de, ns1.regzone.info
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 2810ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 217.198.113.104 |
| AAAA | 1 | 2a00:19a0:3:71:0:d9c6:7168:1 |
| NS | 3 | ns1.regzone.cz, ns1.regzone.de... |
| MX | 3 | relay.zoner.com (pri: 1), 10mx.zoner.com (pri: 10)... |
| TXT | 1 | v=spf1 include:spf-zoner-zmail.zoner.com |
| SOA | 1 | ns1.regzone.cz administrator.czechia.cz |
📌 Glue Records Collected
Total: 10
In-bailiwick: 8 (a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz...)
Out-of-bailiwick: 2 (ns1.regzone.cz, ns1.regzone.cz)
Analysis
IP Addresses
defcon.cz directs to two IP numbers, 217.198.113.104 and 2a00:19a0:3:71:0:d9c6:7168:1
Two other host names, along with u2kvetinek.cz, www.ssl-thawte.cz and sporthroch.cz, also share IP numbers with defcon.cz.
Name Servers
defcon.cz is served by three name servers: ns1.regzone.cz, ns1.regzone.de and ns1.regzone.info.
defcon.cz partially shares its NS delegation with several other domains, including lafutura.es, nempi.cz, vitisport.dk and two others.
The hostnames ns1.regzone.cz, ns1.regzone.de and ns1.regzone.info each direct to two IP addresses — ns1.regzone.cz to 217.198.113.10 and 2a00:19a0:3:71:0:d9c6:710a:1, ns1.regzone.de to 23.92.29.43 and 2600:3c02::f03c:91ff:fedb:a6e7, and ns1.regzone.info to 81.0.233.10 and 2001:1528:147::10.
Mail Servers
defcon.cz uses three mail servers — 10mx.zoner.com, 15mx.zoner.com and relay.zoner.com.
There is at least a partial MX overlap between defcon.cz and other domains, including metalsrot.cz, solarpanel.cz, vrelements.com and two others.
10mx.zoner.com has IP address 217.198.120.36, 15mx.zoner.com has IP address 81.0.233.6 and relay.zoner.com has IP address 217.198.120.100 — one address each.