opensolution.cz - dns.ninja
opensolution.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=1784951241 | ||||||
Subdomains
Same first word
Similar names
DNS History
7 records (6 active, 1 former)
●NSalfa.ns.active24.cz2015-05-19 → 2026-07-25 · 2 obs
● 2026-07-25 04:09:42
●NSbeta.ns.active24.cz2015-05-19 → 2026-07-25 · 2 obs
● 2026-07-25 04:09:42
●NSgama.ns.active24.sk2015-05-19 → 2026-07-25 · 2 obs
● 2026-07-25 04:09:42
○MXmail.opensolution.cz2015-05-19 → 2017-05-19 · 4 obs
● 2017-05-19 02:25:02
○ 2020-08-17 12:53:24
○ 2026-07-25 04:09:42
●MXmx1.active24.com2020-08-17 → 2026-07-25 · 3 obs
● 2020-08-17 12:53:24
● 2026-07-25 04:09:42
●MXmx2.active24.com2020-08-17 → 2026-07-25 · 3 obs
● 2020-08-17 12:53:24
● 2026-07-25 04:09:42
●A31.15.10.132026-02-16 → 2026-07-25 · 2 obs
● 2026-07-25 04:09:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| opensolution.cz | alfa.ns.active24.cz, beta.ns.active24.cz, gama.ns.active24.sk | 4 records |
✅ Authoritative Response
Server:185.71.158.30
NS records: alfa.ns.active24.cz, beta.ns.active24.cz, gama.ns.active24.sk
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 1249ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 31.15.10.13 |
| NS | 3 | alfa.ns.active24.cz, beta.ns.active24.cz... |
| MX | 2 | mx1.active24.com (pri: 10), mx2.active24.com (pri: 20) |
| TXT | 4 | MS=ms46436661, v=spf1 include:spf.active24.com ~all... |
| SOA | 1 | alfa.ns.active24.cz hostmaster.active24. |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (alfa.ns.active24.cz, alfa.ns.active24.cz, beta.ns.active24.cz...)
Analysis
Hierarchy
opensolution.cz sits above mail2.opensolution.cz, gw.opensolution.cz and mail.opensolution.cz in the domain hierarchy.
IP Addresses
opensolution.cz resolves to one IP address: 31.15.10.13.
obalpap.eu, www.mkkl.cz, plata.cz and two other host names share IP numbers with opensolution.cz.
Name Servers
opensolution.cz is delegated to three name servers: alfa.ns.active24.cz, beta.ns.active24.cz and gama.ns.active24.sk.
There is at least partial name server overlap between opensolution.cz and other domains — kruzik.bg, agri-robots.com, snmp.cz and two more among them.
These name servers frequently co-occur with the name servers ns.dns4.cz and ns.servery.cz.
alfa.ns.active24.cz, beta.ns.active24.cz and gama.ns.active24.sk each resolve to two IP addresses: alfa.ns.active24.cz resolves to 81.95.96.2 and 2a02:4a8:ac24:100::96:2; beta.ns.active24.cz resolves to 185.111.90.94 and 2a00:4b40:1000:590:185:111:90:94; gama.ns.active24.sk resolves to 185.71.158.30 and 2a00:1968:0:1002:185:71:158:30.
Mail Servers
Mail for opensolution.cz is handled by two mail servers — mx1.active24.com and mx2.active24.com.
opensolution.cz uses an identical mail server configuration to several other domains — among them sanquis.cz, kary.cz, jips.cz and two more.
opensolution.cz has at least partial mail server overlap with other domains such as biodroga.fi, datamondial.com, denisadovala.com and two more.
Hostnames that resolve to 8 IP addresses:
mx1.active24.com resolves to 81.95.97.4, 81.95.97.102, 81.95.97.111 and 5 other IP addresses.
Hostnames that resolve to two IP addresses:
mx2.active24.com points to 185.111.90.93 and 2a00:4b40:1000:590:185:111:90:93.