cssf.cz - dns.ninja
cssf.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=1780926435 | ||||||
Previously MX for
mx2.cssf.cz |
Subdomains
Same first word
cssf.it |
cssf.net |
cssf.cz |
cssf.se |
cssf.com |
cssf.info |
cssf.cn |
cssf.lu |
cssf.com.au |
cssf.cl |
cssf.com.cn |
cssf.fr |
cssf.de |
cssf.or.kr |
cssf.cc |
Similar names
DNS History
13 records (7 active, 6 former)
○NSalfa.ns.active24.cz2015-08-04 → 2017-03-29 · 4 obs
● 2017-03-29 20:31:50
○ 2026-02-24 00:18:32
○ 2026-06-08 14:48:02
○NSbeta.ns.active24.cz2015-08-04 → 2017-03-29 · 4 obs
● 2017-03-29 20:31:50
○ 2026-02-24 00:18:32
○ 2026-06-08 14:48:02
○NSgama.ns.active24.sk2015-08-04 → 2017-03-29 · 4 obs
● 2017-03-29 20:31:50
○ 2026-02-24 00:18:32
○ 2026-06-08 14:48:02
●NSns1.websupport.cz2026-02-24 → 2026-06-08 · 3 obs
● 2026-02-24 00:18:32
● 2026-06-08 14:48:02
●NSns2.websupport.cz2026-02-24 → 2026-06-08 · 3 obs
● 2026-02-24 00:18:32
● 2026-06-08 14:48:02
●NSns3.websupport.eu2026-02-24 → 2026-06-08 · 3 obs
● 2026-02-24 00:18:32
● 2026-06-08 14:48:02
●MXmailin1.cssf.cz2026-02-24 → 2026-06-08 · 2 obs
● 2026-06-08 14:48:02
●MXmailin2.cssf.cz2026-02-24 → 2026-06-08 · 2 obs
● 2026-06-08 14:48:02
○A178.17.5.1662015-08-04 → 2017-03-29 · 4 obs
● 2017-03-29 20:31:50
○ 2026-02-24 00:18:32
○ 2026-06-08 14:48:02
●A185.184.254.102026-03-07 → 2026-06-08 · 3 obs
● 2026-03-07 01:54:54
● 2026-06-08 14:48:02
●A185.184.254.112026-03-07 → 2026-06-08 · 3 obs
● 2026-03-07 01:54:54
● 2026-06-08 14:48:02
○A2a00:4b40:aaaa:2010::72026-02-24 → 2026-02-24 · 4 obs
● 2026-02-24 00:18:32
○ 2026-03-07 01:54:54
○ 2026-06-08 14:48:02
○A37.9.175.2062026-02-24 → 2026-02-24 · 4 obs
● 2026-02-24 00:18:32
○ 2026-03-07 01:54:54
○ 2026-06-08 14:48:02
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | b.ns.nic.cz, d.ns.nic.cz, a.ns.nic.cz, c.ns.nic.cz | - |
| cssf.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: 801ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 185.184.254.10, 185.184.254.11 |
| NS | 3 | ns1.websupport.cz, ns2.websupport.cz... |
| MX | 2 | mailin1.cssf.cz (pri: 10), mailin2.cssf.cz (pri: 100) |
| TXT | 1 | v=spf1 include:spf.active24.com include: |
| SOA | 1 | ns1.websupport.cz admin.websupport.cz |
Analysis
Hierarchy
mailin2.cssf.cz, mailin1.cssf.cz and mx2.cssf.cz each fall under the parent domain cssf.cz.
IP Addresses
cssf.cz points to two IP numbers: 185.184.254.10 and 185.184.254.11.
labtech.sk, adeka.cz, crowtech.sk plus two other host names have IP numbers in common with cssf.cz.
Name Servers
cssf.cz carries NS records delegating to ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu.
cssf.cz partially shares its NS delegation with several other domains, including sportovnidresy.com, nastroje-k.cz, studioivana.cz and two others.
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
cssf.cz uses two mail servers, mailin1.cssf.cz and mailin2.cssf.cz.
mailin1.cssf.cz and mailin2.cssf.cz both carry two IP addresses. The A records for mailin1.cssf.cz are 45.13.137.112 and 2a00:4b40:aaaa:2101:45:13:137:114; the A records for mailin2.cssf.cz are 45.13.137.8 and 2a00:4b40:aaaa:2101:45:13:137:7.