cssf.cz - robtex.com
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=1777004254 | ||||||
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
○ 2026-04-24 04:54:16
○NSbeta.ns.active24.cz2015-08-04 → 2017-03-29 · 4 obs
● 2017-03-29 20:31:50
○ 2026-02-24 00:18:32
○ 2026-04-24 04:54:16
○NSgama.ns.active24.sk2015-08-04 → 2017-03-29 · 4 obs
● 2017-03-29 20:31:50
○ 2026-02-24 00:18:32
○ 2026-04-24 04:54:16
●NSns1.websupport.cz2026-02-24 → 2026-04-24 · 3 obs
● 2026-02-24 00:18:32
● 2026-04-24 04:54:16
●NSns2.websupport.cz2026-02-24 → 2026-04-24 · 3 obs
● 2026-02-24 00:18:32
● 2026-04-24 04:54:16
●NSns3.websupport.eu2026-02-24 → 2026-04-24 · 3 obs
● 2026-02-24 00:18:32
● 2026-04-24 04:54:16
●MXmailin1.cssf.cz2026-02-24 → 2026-04-24 · 2 obs
● 2026-04-24 04:54:16
●MXmailin2.cssf.cz2026-02-24 → 2026-04-24 · 2 obs
● 2026-04-24 04:54:16
○A178.17.5.1662015-08-04 → 2017-03-29 · 4 obs
● 2017-03-29 20:31:50
○ 2026-02-24 00:18:32
○ 2026-04-24 04:54:16
●A185.184.254.102026-03-07 → 2026-04-24 · 3 obs
● 2026-03-07 01:54:54
● 2026-04-24 04:54:16
●A185.184.254.112026-03-07 → 2026-04-24 · 3 obs
● 2026-03-07 01:54:54
● 2026-04-24 04:54:16
○A2a00:4b40:aaaa:2010::72026-02-24 → 2026-02-24 · 4 obs
● 2026-02-24 00:18:32
○ 2026-03-07 01:54:54
○ 2026-04-24 04:54:16
○A37.9.175.2062026-02-24 → 2026-02-24 · 4 obs
● 2026-02-24 00:18:32
○ 2026-03-07 01:54:54
○ 2026-04-24 04:54:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | 8 records |
| cssf.cz | ns2.websupport.cz, ns3.websupport.eu, ns1.websupport.cz | - |
✅ Authoritative Response
Server:185.71.159.12
NS records: ns2.websupport.cz, ns3.websupport.eu, ns1.websupport.cz
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 983ms | 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 |
📌 Glue Records Collected
Total: 8
In-bailiwick: 8 (a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz...)
Analysis
Hierarchy
cssf.cz is a parent of mailin2.cssf.cz, mailin1.cssf.cz and mx2.cssf.cz.
IP Addresses
cssf.cz has two IP numbers: 185.184.254.10 and 185.184.254.11.
Other host names, for instance labtech.sk, adeka.cz, crowtech.sk, akarazoo.cz and brother-sicistroje.cz share IP numbers with cssf.cz.
Name Servers
cssf.cz is delegated to three name servers: ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu.
cssf.cz at least partially shares name servers with other domains, including sportovnidresy.com, nastroje-k.cz, anglictina.cz, levans.cz and singleton.cz.
Host names with two IP numbers:
ns1.websupport.cz: 2a10:bbc0::11 and 45.10.97.11
ns2.websupport.cz: 2a02:250:3::12 and 185.71.159.12
ns3.websupport.eu: 2a10:bbc0::13 and 45.10.97.13
Mail Servers
cssf.cz is served by two mail servers mailin1.cssf.cz and mailin2.cssf.cz.
Host names with two IPs:
mailin1.cssf.cz points to 2a00:4b40:aaaa:2101:45:13:137:114 and 45.13.137.112
mailin2.cssf.cz points to 2a00:4b40:aaaa:2101:45:13:137:7 and 45.13.137.8