simopt.cz - robtex.com
simopt.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=1771291036 | ||||||
Same first word
Similar names
DNS History
11 records (5 active, 6 former)
○NSalfa.ns.active24.cz2015-08-16 → 2017-01-26 · 4 obs
● 2017-01-26 09:44:48
○ 2026-03-10 21:24:56
○ 2026-03-14 07:50:16
○NSbeta.ns.active24.cz2015-08-16 → 2017-01-26 · 4 obs
● 2017-01-26 09:44:48
○ 2026-03-10 21:24:56
○ 2026-03-14 07:50:16
○NSgama.ns.active24.sk2015-08-16 → 2017-01-26 · 4 obs
● 2017-01-26 09:44:48
○ 2026-03-10 21:24:56
○ 2026-03-14 07:50:16
●NSns1.websupport.cz2026-03-10 → 2026-03-14 · 3 obs
● 2026-03-10 21:24:56
● 2026-03-14 07:50:16
●NSns2.websupport.cz2026-03-10 → 2026-03-14 · 3 obs
● 2026-03-10 21:24:56
● 2026-03-14 07:50:16
●NSns3.websupport.eu2026-03-10 → 2026-03-14 · 3 obs
● 2026-03-10 21:24:56
● 2026-03-14 07:50:16
○MXd795.master.cz2015-08-16 → 2017-01-26 · 4 obs
● 2017-01-26 09:44:48
○ 2026-03-10 21:24:56
○ 2026-03-14 07:50:16
○MXns3.master.cz2015-08-16 → 2017-01-26 · 4 obs
● 2017-01-26 09:44:48
○ 2026-03-10 21:24:56
○ 2026-03-14 07:50:16
●MXsimopt-cz.mail.protection.outlook.com2026-03-10 → 2026-03-14 · 3 obs
● 2026-03-10 21:24:56
● 2026-03-14 07:50:16
●A194.145.180.442026-03-10 → 2026-03-14 · 3 obs
● 2026-03-10 21:24:56
● 2026-03-14 07:50:16
○A77.93.207.522015-08-16 → 2017-01-26 · 4 obs
● 2017-01-26 09:44:48
○ 2026-03-10 21:24:56
○ 2026-03-14 07:50:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | d.ns.nic.cz, c.ns.nic.cz, a.ns.nic.cz, b.ns.nic.cz | - |
| simopt.cz | ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu | - |
✅ Authoritative Response
Server: 45.10.97.11
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: 1033ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 194.145.180.44 |
| NS | 3 | ns1.websupport.cz, ns2.websupport.cz... |
| MX | 1 | simopt-cz.mail.protection.outlook.com (p |
| TXT | 3 | MS=CE90919A676DBAD95D4AF9A42E69FAEF04518, google-site-verification=YFqVREVbTf0UyaC... |
| SOA | 1 | ns1.websupport.cz admin.websupport.cz |
Analysis
IP Addresses
simopt.cz points to a single IP number: 194.145.180.44.
Other host names, for instance get2know.cz, d4562-vm5.masterinter.net and simopt.eu share IP numbers with simopt.cz.
Name Servers
simopt.cz is delegated to three name servers: ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu.
simopt.cz at least partially shares name servers with other domains, for instance atres.cat, panatel.cz, reinsberg.net, cenyrealit.cz and metaculture.cz.
Host names with two IP numbers:
Host ns1.websupport.cz points to 2a10:bbc0::11 and 45.10.97.11.
Host ns2.websupport.cz points to 2a02:250:3::12 and 185.71.159.12.
Host ns3.websupport.eu points to 2a10:bbc0::13 and 45.10.97.13.
Mail Servers
simopt.cz is handled by a single mail server, simopt-cz.mail.protection.outlook.com.
Host name simopt-cz.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:ca04::, 2a01:111:f403:ca04::d, 2a01:111:f403:ca09::f, 2a01:111:f403:ca09::20, 52.101.68.21, 52.101.68.32, 52.101.68.36 and 52.101.73.24.