corecluster.cz - robtex.com
corecluster.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=1774784836 | ||||||
Subdomains
ns1.corecluster.cz |
Same first word
corecluster.cz |
corecluster.pro |
corecluster.net |
Similar names
DNS History
8 records (8 active, 0 former)
●NSns.gransy.com2026-03-28 → 2026-03-29 · 2 obs
● 2026-03-29 12:12:36
●NSns2.gransy.com2026-03-28 → 2026-03-29 · 2 obs
● 2026-03-29 12:12:36
●NSns3.gransy.com2026-03-28 → 2026-03-29 · 2 obs
● 2026-03-29 12:12:36
●NSns4.gransy.com2026-03-28 → 2026-03-29 · 2 obs
● 2026-03-29 12:12:36
●NSns5.gransy.com2026-03-28 → 2026-03-29 · 2 obs
● 2026-03-29 12:12:36
●MXmdmail.mydreams.cz2026-03-28 → 2026-03-29 · 2 obs
● 2026-03-29 12:12:36
●A178.238.41.732026-03-28 → 2026-03-29 · 2 obs
● 2026-03-29 12:12:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| corecluster.cz | ns.gransy.com, ns2.gransy.com, ns3.gransy.com, ns4.gransy.com... | - |
✅ Authoritative Response
Server:31.192.227.223
NS records: ns.gransy.com, ns2.gransy.com, ns3.gransy.com, ns4.gransy.com, ns5.gransy.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for corecluster.cz (unsigned zone)
⏱️ Timing
Total: 1404ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 178.238.41.73 |
| NS | 5 | ns3.gransy.com, ns.gransy.com... |
| MX | 2 | mail.wbank.cz (pri: 20), mdmail.mydreams.cz (pri: 10) |
| TXT | 1 | v=spf1 a mx +ip4:178.238.41.64/26 +ip4:8 |
| SOA | 1 | ns.gransy.com root.gransy.com |
Analysis
Hierarchy
corecluster.cz is parent of ns1.corecluster.cz.
IP Addresses
corecluster.cz points to a single IP: 178.238.41.73.
Other host names, for instance melusine.cz, hexageek.cz, mydreams.hosting, www.imagehost.cz and cz.strap-on.cz share IP numbers with corecluster.cz.
Name Servers
corecluster.cz is delegated to five name servers: ns2.gransy.com, ns3.gransy.com, ns4.gransy.com, ns5.gransy.com and ns.gransy.com.
corecluster.cz at least partially shares its name servers with other domains, for instance svornost.net, arezepte.de, kranio.cz, eua.sk and vinoteka-ostrava.cz.
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
Two mail servers mdmail.mydreams.cz and mail.wbank.cz handle corecluster.cz.
corecluster.cz uses the same mail server setup as other domains such as papaya-agency.cz, fuelhosting.net, mediapub.cz, extra-hosting.cz and pecujokaru.cz.
corecluster.cz shares some mail servers with other domains, including applego.com, vizit.cz, ponizil.cz, beroun.ws and daloo.cz.
These mail servers are commonly used with mymail.mydreams.cz, rumburak.mydreams.cz and email.mydreams.cz.
Host names with a single IP:
mdmail.mydreams.cz resolves to 85.118.130.105.
mail.wbank.cz resolves to 149.62.151.218.