step-four.cz - robtex.com
step-four.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=1776097055 | ||||||
Subdomains
Same first word
step-four.de |
step-four.cz |
Similar names
DNS History
11 records (6 active, 5 former)
○NSalfa.ns.active24.cz2015-07-12 → 2017-05-18 · 4 obs
● 2017-05-18 20:24:24
○ 2026-02-20 12:19:02
○ 2026-04-13 17:02:38
○NSbeta.ns.active24.cz2015-07-12 → 2017-05-18 · 4 obs
● 2017-05-18 20:24:24
○ 2026-02-20 12:19:02
○ 2026-04-13 17:02:38
○NSgama.ns.active24.sk2015-07-12 → 2017-05-18 · 4 obs
● 2017-05-18 20:24:24
○ 2026-02-20 12:19:02
○ 2026-04-13 17:02:38
●NSns1.websupport.cz2026-02-20 → 2026-04-13 · 3 obs
● 2026-02-20 12:19:02
● 2026-04-13 17:02:38
●NSns2.websupport.cz2026-02-20 → 2026-04-13 · 3 obs
● 2026-02-20 12:19:02
● 2026-04-13 17:02:38
●NSns3.websupport.eu2026-02-20 → 2026-04-13 · 3 obs
● 2026-02-20 12:19:02
● 2026-04-13 17:02:38
○MXmail.breclav-net.cz2015-07-12 → 2017-05-18 · 4 obs
● 2017-05-18 20:24:24
○ 2026-02-20 12:19:02
○ 2026-04-13 17:02:38
●MXmailin1.step-four.cz2026-02-20 → 2026-04-13 · 3 obs
● 2026-02-20 12:19:02
● 2026-04-13 17:02:38
●MXmailin2.step-four.cz2026-02-20 → 2026-04-13 · 3 obs
● 2026-02-20 12:19:02
● 2026-04-13 17:02:38
●A135.125.167.1882026-02-20 → 2026-04-13 · 3 obs
● 2026-02-20 12:19:02
● 2026-04-13 17:02:38
○A37.187.168.682015-07-12 → 2017-05-18 · 4 obs
● 2017-05-18 20:24:24
○ 2026-02-20 12:19:02
○ 2026-04-13 17:02:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| step-four.cz | ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu | - |
✅ Authoritative Response
Server:185.71.159.12
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: 804ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 135.125.167.188 |
| NS | 3 | ns1.websupport.cz, ns2.websupport.cz... |
| MX | 2 | mailin1.step-four.cz (pri: 10), mailin2.step-four.cz (pri: 100) |
| TXT | 1 | v=spf1 ip4:212.96.160.8 include:spf.acti |
| SOA | 1 | ns1.websupport.cz admin.websupport.cz |
Analysis
Hierarchy
step-four.cz is parent of www.step-four.cz, mailin2.step-four.cz and mailin1.step-four.cz.
IP Addresses
step-four.cz points to a single IP: 135.125.167.188.
Other host names, for instance justan.cz, firefly.pixelhouse.cz, ascotdesign.cz, volakova.cz and dufonev.cz share IP numbers with step-four.cz.
Name Servers
step-four.cz is delegated to three name servers: ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu.
step-four.cz at least partially shares its name servers with other domains, for instance 7prime.de, fujinon.cz, bluf.cz, exactive.net and luckan.cz.
These name servers are commonly used with ns1.websupport.sk, ns2.websupport.sk and ns3.websupport.sk.
Host names with two IP numbers:
ns1.websupport.cz points to: 2a10:bbc0::11 and 45.10.97.11.
ns2.websupport.cz points to: 2a02:250:3::12 and 185.71.159.12.
ns3.websupport.eu points to: 2a10:bbc0::13 and 45.10.97.13.
Mail Servers
Two mail servers mailin1.step-four.cz and mailin2.step-four.cz handle step-four.cz.
Host names with two IP numbers: mailin1.step-four.cz points to 2a00:4b40:aaaa:2101:45:13:137:7 and 45.13.137.7; mailin2.step-four.cz points to 2a00:4b40:aaaa:2101:45:13:137:8 and 45.13.137.9