coolcode.cz - robtex.com
coolcode.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=1790275646 | ||||||
Same first word
Similar names
Previous names
Next names
DNS History
7 records (7 active, 0 former)
●NSns1.websupport.cz2026-09-18 → 2026-09-24 · 2 obs
● 2026-09-24 19:12:58
●NSns2.websupport.cz2026-09-18 → 2026-09-24 · 2 obs
● 2026-09-24 19:12:58
●NSns3.websupport.eu2026-09-18 → 2026-09-24 · 2 obs
● 2026-09-24 19:12:58
●MXmailin1.coolcode.cz2026-09-18 → 2026-09-24 · 2 obs
● 2026-09-24 19:12:58
●MXmailin2.coolcode.cz2026-09-18 → 2026-09-24 · 2 obs
● 2026-09-24 19:12:58
●A2a00:4b40:aaaa:2011::72026-09-18 → 2026-09-24 · 2 obs
● 2026-09-24 19:12:58
●A37.9.175.2122026-09-18 → 2026-09-24 · 2 obs
● 2026-09-24 19:12:58
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| coolcode.cz | ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu | - |
✅ Authoritative Response
Server:185.71.159.12
NS records: ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 1324ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 37.9.175.212 |
| AAAA | 1 | 2a00:4b40:aaaa:2011::7 |
| NS | 3 | ns1.websupport.cz, ns2.websupport.cz... |
| MX | 2 | mailin1.coolcode.cz (pri: 10), mailin2.coolcode.cz (pri: 100) |
| TXT | 1 | v=spf1 include:spf.active24.com include: |
| SOA | 1 | ns1.websupport.cz admin.websupport.cz |
Analysis
IP Addresses
coolcode.cz points to the IP addresses 37.9.175.212 and 2a00:4b40:aaaa:2011::7
ancera.cz, kolikvydelam.cz, post.suma-cz.cz plus two other host names have IP numbers in common with coolcode.cz.
Name Servers
Three name servers are authoritative for coolcode.cz: ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu.
There is at least partial name server overlap between coolcode.cz and other domains — luckajede.cz, fokusindustry.sk, hydrosorbent.eu and two more among them.
ns1.websupport.cz resolves to 45.10.97.11 and 2a10:bbc0::11. ns2.websupport.cz resolves to 185.71.159.12 and 2a02:250:3::12. ns3.websupport.eu resolves to 45.10.97.13 and 2a10:bbc0::13. All three hostnames point to two IP numbers each.
Mail Servers
coolcode.cz uses two mail servers, mailin1.coolcode.cz and mailin2.coolcode.cz.
Each of the two host names carries two IP addresses: mailin1.coolcode.cz points to 45.13.137.85 and 2a00:4b40:aaaa:2101:45:13:137:109, and mailin2.coolcode.cz points to 45.13.137.111 and 2a00:4b40:aaaa:2101:45:13:137:105.