simplex.cz - robtex.com
simplex.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=1784711842 | ||||||
Subdomains
www.simplex.cz |
Same first word
Similar names
DNS History
15 records (6 active, 9 former)
○NSalfa.ns.active24.cz2015-09-04 → 2017-06-17 · 4 obs
● 2017-06-17 15:47:00
○ 2026-02-19 18:42:54
○ 2026-07-22 09:54:16
○NSbeta.ns.active24.cz2015-09-04 → 2017-06-17 · 4 obs
● 2017-06-17 15:47:00
○ 2026-02-19 18:42:54
○ 2026-07-22 09:54:16
○NSgama.ns.active24.sk2015-09-04 → 2017-06-17 · 4 obs
● 2017-06-17 15:47:00
○ 2026-02-19 18:42:54
○ 2026-07-22 09:54:16
●NSns1.websupport.cz2026-02-19 → 2026-07-22 · 3 obs
● 2026-02-19 18:42:54
● 2026-07-22 09:54:16
●NSns2.websupport.cz2026-02-19 → 2026-07-22 · 3 obs
● 2026-02-19 18:42:54
● 2026-07-22 09:54:16
●NSns3.websupport.eu2026-02-19 → 2026-07-22 · 3 obs
● 2026-02-19 18:42:54
● 2026-07-22 09:54:16
○MXin.smtp.cz2015-09-04 → 2016-09-24 · 4 obs
● 2016-09-24 02:19:52
○ 2017-06-17 15:47:00
○ 2026-07-22 09:54:16
○MXmx.smtp.cz2015-09-04 → 2016-09-24 · 4 obs
● 2016-09-24 02:19:52
○ 2017-06-17 15:47:00
○ 2026-07-22 09:54:16
○MXmx1.active24.com2017-06-17 → 2017-06-17 · 4 obs
● 2017-06-17 15:47:00
○ 2026-02-19 18:42:54
○ 2026-07-22 09:54:16
○MXmx2.active24.com2017-06-17 → 2017-06-17 · 4 obs
● 2017-06-17 15:47:00
○ 2026-02-19 18:42:54
○ 2026-07-22 09:54:16
●MXsimplex-cz.mail.protection.outlook.com2026-02-19 → 2026-07-22 · 3 obs
● 2026-02-19 18:42:54
● 2026-07-22 09:54:16
●A2a00:4b40:aaaa:2011::52026-02-19 → 2026-07-22 · 3 obs
● 2026-02-19 18:42:54
● 2026-07-22 09:54:16
○A2a02:4a8:ac24:108::96:2272015-09-04 → 2017-06-17 · 4 obs
● 2017-06-17 15:47:00
○ 2026-02-19 18:42:54
○ 2026-07-22 09:54:16
●A37.9.175.2122026-02-19 → 2026-07-22 · 3 obs
● 2026-02-19 18:42:54
● 2026-07-22 09:54:16
○A81.95.96.2272015-09-04 → 2017-06-17 · 4 obs
● 2017-06-17 15:47:00
○ 2026-02-19 18:42:54
○ 2026-07-22 09:54:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| simplex.cz | ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu | - |
✅ Authoritative Response
Server:45.10.97.13
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: 897ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 37.9.175.212 |
| AAAA | 1 | 2a00:4b40:aaaa:2011::5 |
| NS | 3 | ns1.websupport.cz, ns2.websupport.cz... |
| MX | 1 | simplex-cz.mail.protection.outlook.com ( |
| TXT | 2 | MS=2AAE2E55F5B3D1647A3C898B9C8410D860672, v=spf1 include:spf.protection.outlook.co |
| SOA | 1 | ns1.websupport.cz admin.websupport.cz |
Analysis
Hierarchy
www.simplex.cz is delegated beneath simplex.cz.
IP Addresses
simplex.cz points to the IP addresses 37.9.175.212 and 2a00:4b40:aaaa:2011::5
Among the host names that share IP numbers with simplex.cz are trdlokafe.cz, paperjam.cz, tikti.cz and two others.
Name Servers
simplex.cz carries NS records delegating to ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu.
There is at least partial name server overlap between simplex.cz and other domains — ignisferra.cz, winci.cz, cinkili.eu and two more among them.
The name servers ns1.websupport.sk, ns2.websupport.sk and ns3.websupport.sk are often found in combination with these name servers.
ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu are three hostnames that each resolve to a pair of IP addresses: ns1.websupport.cz to 45.10.97.11 and 2a10:bbc0::11, ns2.websupport.cz to 185.71.159.12 and 2a02:250:3::12, and ns3.websupport.eu to 45.10.97.13 and 2a10:bbc0::13.
Mail Servers
simplex.cz routes its mail through a single mail server, simplex-cz.mail.protection.outlook.com.
simplex-cz.mail.protection.outlook.com directs to 8 IP numbers, including 52.101.68.8, 52.101.73.2 and 52.101.73.15, along with 5 other.