kook.cz - robtex.com
kook.cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 2a00:4b40:aaaa:2011::7🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32 | ||||||
| A | 37.9.175.211🇸🇰 WEBSUPPORT-SRO-SK-AS37.9.175.0/24 | ||||||
| NS | ns1.websupport.cz ⭐ | ||||||
| A | 2a10:bbc0::11🇨🇿 ACTIVE24-AS2a10:bbc0::/32 | ||||||
| PTR | ns1.websupport.eu | ||||||
| A | 45.10.97.11🇨🇿 ACTIVE24-AS45.10.97.0/24 | ||||||
| PTR | ns1.websupport.eu | ||||||
| NS | ns2.websupport.cz | ||||||
| A | 2a02:250:3::12🇸🇪 ACTIVE24-AS2a02:250:3::/48 | ||||||
| PTR | ns2.websupport.eu | ||||||
| A | 185.71.159.12🇸🇪 ACTIVE24-AS185.71.159.0/24 | ||||||
| PTR | ns2.websupport.eu | ||||||
| NS | ns3.websupport.eu | ||||||
| A | 2a10:bbc0::13🇨🇿 ACTIVE24-AS2a10:bbc0::/32 | ||||||
| PTR | ns3.websupport.eu | ||||||
| A | 45.10.97.13🇨🇿 ACTIVE24-AS45.10.97.0/24 | ||||||
| PTR | ns3.websupport.eu | ||||||
| MX | mx10.active24.cz ⭐ | ||||||
| A | 2a00:4b40:aaaa:2101:45:13:137:85🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32 | ||||||
| A | 45.13.137.85🇸🇰 WEBSUPPORT-SRO-SK-AS45.13.137.0/24 | ||||||
| PTR | mx10.active24.cz | ||||||
| MX | mx20.active24.cz(100) | ||||||
| A | 2a00:4b40:aaaa:2101:45:13:137:86🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32 | ||||||
| A | 45.13.137.86🇸🇰 WEBSUPPORT-SRO-SK-AS45.13.137.0/24 | ||||||
| PTR | mx20.active24.cz | ||||||
| TXT | v=spf1 a mx include:_spf.websupport.cz -all | ||||||
| SOA | ns1.websupport.czadmin@websupport.cz serial=1761318495 | ||||||
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=1785221241 | ||||||
Same first word
Similar names
DNS History
11 records (7 active, 4 former)
○NSns1.ebrana.cz2015-07-13 → 2020-10-20 · 4 obs
● 2020-10-20 11:37:20
○ 2026-06-13 09:10:00
○ 2026-07-28 07:09:12
●NSns1.websupport.cz2026-06-13 → 2026-07-28 · 3 obs
● 2026-06-13 09:10:00
● 2026-07-28 07:09:12
○NSns2.ebrana.cz2015-07-13 → 2020-10-20 · 4 obs
● 2020-10-20 11:37:20
○ 2026-06-13 09:10:00
○ 2026-07-28 07:09:12
●NSns2.websupport.cz2026-06-13 → 2026-07-28 · 3 obs
● 2026-06-13 09:10:00
● 2026-07-28 07:09:12
●NSns3.websupport.eu2026-06-13 → 2026-07-28 · 3 obs
● 2026-06-13 09:10:00
● 2026-07-28 07:09:12
○MXmail.kook.cz2015-07-13 → 2020-10-20 · 4 obs
● 2020-10-20 11:37:20
○ 2026-06-13 09:10:00
○ 2026-07-28 07:09:12
●MXmx10.active24.cz2026-06-13 → 2026-07-28 · 3 obs
● 2026-06-13 09:10:00
● 2026-07-28 07:09:12
●MXmx20.active24.cz2026-06-13 → 2026-07-28 · 3 obs
● 2026-06-13 09:10:00
● 2026-07-28 07:09:12
○A109.205.75.422015-07-13 → 2020-10-20 · 4 obs
● 2020-10-20 11:37:20
○ 2026-06-13 09:10:00
○ 2026-07-28 07:09:12
●A2a00:4b40:aaaa:2011::72026-06-13 → 2026-07-28 · 3 obs
● 2026-06-13 09:10:00
● 2026-07-28 07:09:12
●A37.9.175.2112026-06-13 → 2026-07-28 · 3 obs
● 2026-06-13 09:10:00
● 2026-07-28 07:09:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| kook.cz | ns3.websupport.eu, ns2.websupport.cz, ns1.websupport.cz | - |
✅ Authoritative Response
Server:45.10.97.11
NS records: ns3.websupport.eu, ns2.websupport.cz, ns1.websupport.cz
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 966ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 37.9.175.211 |
| AAAA | 1 | 2a00:4b40:aaaa:2011::7 |
| NS | 3 | ns1.websupport.cz, ns2.websupport.cz... |
| MX | 2 | mx10.active24.cz (pri: 10), mx20.active24.cz (pri: 100) |
| TXT | 1 | v=spf1 a mx include:_spf.websupport.cz - |
| SOA | 1 | ns1.websupport.cz admin.websupport.cz |
Analysis
IP Addresses
kook.cz points to the IP addresses 37.9.175.211 and 2a00:4b40:aaaa:2011::7
Additional host names — jobin.tech, mmcomp.net, picsevent.com and two others — share IP numbers with kook.cz.
Name Servers
The authoritative name servers for kook.cz are ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu — three in total.
At least some of kook.cz's name servers are shared with other domains, for example wuwei.cz, e-banka.cz, modadiva.sk and two more.
It is common for these name servers to be used in conjunction with the name servers ns1.websupport.sk, ns2.websupport.sk and ns3.websupport.sk.
ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu all resolve to exactly two IP numbers apiece: ns1.websupport.cz → 45.10.97.11 and 2a10:bbc0::11; ns2.websupport.cz → 185.71.159.12 and 2a02:250:3::12; ns3.websupport.eu → 45.10.97.13 and 2a10:bbc0::13.
Mail Servers
kook.cz has two mail servers: mx10.active24.cz and mx20.active24.cz.
kook.cz shares the same mail server setup as other domains, including trimpios.eu, femax-fm.cz, licomersko.cz and two others.
The two host names mx10.active24.cz and mx20.active24.cz each have a pair of IP addresses: mx10.active24.cz has 45.13.137.85 and 2a00:4b40:aaaa:2101:45:13:137:85, and mx20.active24.cz has 45.13.137.86 and 2a00:4b40:aaaa:2101:45:13:137:86.