rubycore.cz - robtex.com
rubycore.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=1791316044 | ||||||
Same first word
rubycore.cz |
rubycore.uk |
rubycore.net |
rubycore.co |
rubycore.pages.dev |
rubycore.com |
rubycore.ltd |
rubycore.quest |
rubycore.xyz |
Similar names
corebury.co.uk |
ourcyber.net |
corebury.com |
coyurerb.media |
beroucry.workers.dev |
coreruby.com |
crobuyer.xyz |
ourcyber.com |
ourcyber.org |
Previous names
Next names
DNS History
7 records (7 active, 0 former)
●NSns1.websupport.sk2026-10-03 → 2026-10-06 · 2 obs
● 2026-10-06 20:23:06
●NSns2.websupport.sk2026-10-03 → 2026-10-06 · 2 obs
● 2026-10-06 20:23:06
●NSns3.websupport.sk2026-10-03 → 2026-10-06 · 2 obs
● 2026-10-06 20:23:06
●MXmx10.websupport.sk2026-10-06 → 2026-10-06 · 2 obs
● 2026-10-06 20:23:06
●MXmx20.websupport.sk2026-10-06 → 2026-10-06 · 2 obs
● 2026-10-06 20:23:06
●A2a00:4b40:aaaa:2004::52026-10-03 → 2026-10-06 · 2 obs
● 2026-10-06 20:23:06
●A37.9.175.1552026-10-03 → 2026-10-06 · 2 obs
● 2026-10-06 20:23:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, d.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz | - |
| rubycore.cz | ns1.websupport.sk, ns3.websupport.sk, ns2.websupport.sk | - |
✅ Authoritative Response
Server:185.71.159.12
NS records: ns1.websupport.sk, ns3.websupport.sk, ns2.websupport.sk
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 942ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 37.9.175.155 |
| AAAA | 1 | 2a00:4b40:aaaa:2004::5 |
| NS | 3 | ns1.websupport.sk, ns2.websupport.sk... |
| MX | 2 | mx10.websupport.sk (pri: 10), mx20.websupport.sk (pri: 100) |
| TXT | 1 | v=spf1 a mx include:_spf.m1.websupport.s |
| SOA | 1 | ns1.websupport.sk admin.websupport.sk |
Analysis
IP Addresses
rubycore.cz directs to two IP numbers, 37.9.175.155 and 2a00:4b40:aaaa:2004::5
heartislava.sk, magnolianesvady.sk, zivakava.sk plus two other host names have IP numbers in common with rubycore.cz.
Name Servers
rubycore.cz is served by three name servers: ns1.websupport.sk, ns2.websupport.sk and ns3.websupport.sk.
rubycore.cz has at least partial name server overlap with other domains, such as fyzioterapia-nitra.online, vasepozemky.sk, fordelix.com and two others.
The hostnames ns1.websupport.sk, ns2.websupport.sk and ns3.websupport.sk each direct to two IP addresses — ns1.websupport.sk to 45.10.97.11 and 2a10:bbc0::11, ns2.websupport.sk to 185.71.159.12 and 2a02:250:3::12, and ns3.websupport.sk to 45.10.97.13 and 2a10:bbc0::13.
Mail Servers
rubycore.cz uses two mail servers, mx10.websupport.sk and mx20.websupport.sk.
The mail server setup of rubycore.cz matches that of other domains such as sjdcreator.sk, stonestore.li, pozicovna-mercedes-v-bratislava.sk and two others.
rubycore.cz partially shares its mail servers with other domains; known examples include valtero.eu, zahradkypiestany.sk and vwebdigital.sk.
Hosts with 10 IP addresses each:
mx10.websupport.sk maps to 45.13.137.78, 45.13.137.79, 45.13.137.109 and 7 additional IP addresses.
mx20.websupport.sk maps to 45.13.137.78, 45.13.137.79, 45.13.137.109 and 7 additional IP addresses.
mx10.websupport.sk and mx20.websupport.sk each have 2a00:4b40:aaaa:2101:45:13:137:78 IP addresses.
mx10.websupport.sk and mx20.websupport.sk each have 2a00:4b40:aaaa:2101:45:13:137:79 IP addresses.
mx10.websupport.sk and mx20.websupport.sk each have 2a00:4b40:aaaa:2101:45:13:137:109 IP addresses.
mx10.websupport.sk and mx20.websupport.sk each have 2a00:4b40:aaaa:2101:45:13:137:110 IP addresses.
mx10.websupport.sk and mx20.websupport.sk each have 2a00:4b40:aaaa:2101:45:13:137:111 IP addresses.
mx10.websupport.sk and mx20.websupport.sk each have 45.13.137.78 IP addresses.
mx10.websupport.sk and mx20.websupport.sk each have 45.13.137.79 IP addresses.
mx10.websupport.sk and mx20.websupport.sk each have 45.13.137.109 IP addresses.
mx10.websupport.sk and mx20.websupport.sk each have 45.13.137.110 IP addresses.
mx10.websupport.sk and mx20.websupport.sk each have 45.13.137.111 IP addresses.