rubytech.cz - dns.ninja
rubytech.cz
| DNSSEC | ⚠️ Not signed | ||||||
| A | 80.250.5.74🇨🇿 WIA-AS80.250.0.0/19 WIA s.r.o., Prague, Czech Republic | ||||||
| PTR | server.nethouse.cz | ||||||
| NS | ns1.wia.cz ⭐ | ||||||
| A | 2a01:6400:2:1002::2🇨🇿 WIA-AS2a01:6400::/32 WIA spol. s r.o. Prague, Czech Republic | ||||||
| PTR | ns1.wia.cz | ||||||
| A | 80.250.5.90🇨🇿 WIA-AS80.250.0.0/19 WIA s.r.o., Prague, Czech Republic | ||||||
| PTR | ns1.wia.cz | ||||||
| NS | ns2.wia.cz | ||||||
| A | 2a01:6400:2:1003::2🇨🇿 WIA-AS2a01:6400::/32 WIA spol. s r.o. Prague, Czech Republic | ||||||
| PTR | ns2.wia.cz | ||||||
| A | 31.7.247.62🇨🇿 WIA-AS31.7.240.0/21 WIA spol. s.r.o. | ||||||
| PTR | ns2.wia.cz | ||||||
| MX | server.nethouse.cz ⭐ | ||||||
| A | 2a01:6400:2:30::1🇨🇿 WIA-AS2a01:6400::/32 WIA spol. s r.o. Prague, Czech Republic | ||||||
| PTR | server.nethouse.cz | ||||||
| A | 80.250.5.74🇨🇿 WIA-AS80.250.0.0/19 WIA s.r.o., Prague, Czech Republic | ||||||
| PTR | server.nethouse.cz | ||||||
| SOA | ns1.wia.czhostmaster@wia.cz 2011-02-18 #1 | ||||||
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=1787964443 | ||||||
Same first word
Similar names
Previous names
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DNS History
4 records (4 active, 0 former)
●MXserver.nethouse.cz2015-07-05 → 2026-08-29 · 2 obs
● 2026-08-29 01:57:16
●A80.250.5.742015-07-05 → 2026-08-29 · 2 obs
● 2026-08-29 01:57:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | 8 records |
| rubytech.cz | ns1.wia.cz, ns2.wia.cz | 4 records |
✅ Authoritative Response
Server:31.7.247.62
NS records: ns1.wia.cz, ns2.wia.cz
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for rubytech.cz (unsigned zone)
⏱️ Timing
Total: 763ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 80.250.5.74 |
| NS | 2 | ns2.wia.cz, ns1.wia.cz |
| MX | 1 | server.nethouse.cz (pri: 99) |
| SOA | 1 | ns1.wia.cz hostmaster.wia.cz |
📌 Glue Records Collected
Total: 12
In-bailiwick: 8 (a.ns.nic.cz, a.ns.nic.cz, b.ns.nic.cz...)
Out-of-bailiwick: 4 (ns1.wia.cz, ns1.wia.cz, ns2.wia.cz...)
Analysis
IP Addresses
rubytech.cz points to a single IP number: 80.250.5.74.
Additional host names — fiber-shop.cz, odblokovani.cz, masnato.com and two others — share IP numbers with rubytech.cz.
Name Servers
rubytech.cz has two authoritative name servers — ns1.wia.cz and ns2.wia.cz.
rubytech.cz shares its name server setup with other domains, including 52.208.82.in-addr.arpa, unyp.eu, mastervac.cz and two others.
At least some of rubytech.cz's name servers are shared with other domains, for example deltateam.cz and plavani.com.
Both ns1.wia.cz and ns2.wia.cz have two IP addresses each. ns1.wia.cz resolves to 80.250.5.90 and 2a01:6400:2:1002::2; ns2.wia.cz resolves to 31.7.247.62 and 2a01:6400:2:1003::2.
Mail Servers
rubytech.cz has one mail server: server.nethouse.cz.
rubytech.cz shares the same mail server setup as other domains, including straightcore.cz, softpillow.tv, poupa.cz and two others.
rubytech.cz shares mail servers — at least in part — with other domains, including lunaria.cz, mywia.cz, dpmp.cz and two others.
It is common to see these mail servers combined with the mail servers mail2.kutnahora.cz, etrn.nextra.cz and mail.myroline.com.
server.nethouse.cz directs to two IP numbers, 80.250.5.74 and 2a01:6400:2:30::1.