ctk.cz - robtex.com
ctk.cz
| DNSSEC | ⚠️ Not signed | ||||||
| A | 80.79.27.48🇨🇿 MASTER-AS80.79.16.0/20 MASTER-NET-2 | ||||||
| PTR | proxy.cn.cz | ||||||
| NS | ns.ctk.cz ⭐ | ||||||
| A | 62.168.9.230🇨🇿 TMOBILE-CZ62.168.0.0/18 T-Mobile Czech Republic a.s. | ||||||
| PTR | ns.ctk.cz | ||||||
| NS | ns.ceskenoviny.cz | ||||||
| A | 2a01:430:0:37::44🇨🇿 MASTER-AS2a01:430::/32 MASTER-IPV6-1-MAI-CZ | ||||||
| PTR | ns.cn.cz | ||||||
| A | 80.79.27.44🇨🇿 MASTER-AS80.79.16.0/20 MASTER-NET-2 | ||||||
| PTR | 80-79-27-44.static.masterinter.net | ||||||
| MX | irp2.ctk.cz ⭐ | ||||||
| A | 62.168.9.223🇨🇿 TMOBILE-CZ62.168.0.0/18 T-Mobile Czech Republic a.s. | ||||||
| PTR | irp2.ctk.cz | ||||||
| MX | irp3.ctk.cz ⭐ | ||||||
| A | 94.247.37.222🇨🇿 ITS-CZ94.247.32.0/21 Route object of ITS | ||||||
| MX | mail.ctk.cz(10) | ||||||
| A | 62.168.9.132🇨🇿 TMOBILE-CZ62.168.0.0/18 T-Mobile Czech Republic a.s. | ||||||
| MX | irp.ctk.cz(50) | ||||||
| A | 62.168.9.222🇨🇿 TMOBILE-CZ62.168.0.0/18 T-Mobile Czech Republic a.s. | ||||||
| PTR | irp.ctk.cz | ||||||
| MX | support.clapix.com(150) | ||||||
| A | 193.86.66.196🇨🇿 TMOBILE-CZ193.86.0.0/16 T-Mobile Czech Republic a.s. | ||||||
| PTR | support.clapix.com | ||||||
| TXT | 176zdctcwx3m6tc3ppldhdcp4q9nws5n | ||||||
| TXT | google-site-verification=HFHq-CE5nrMKegPVTgrh1ZCyqgXQgF821hXppIjMJEU | ||||||
| TXT | google-site-verification=usQu7gdsyVeWZSPpMexGhBgGpAmPXYyFwWqInf5NgLg | ||||||
| TXT | v=spf1 mx ip4:62.168.9.222 ip4:62.168.9.223 ip4:62.168.9.132 ip4:94.247.37.22... | ||||||
| SOA | ns.ctk.czpostmaster@ctk.cz 2026-03-10 #1 | ||||||
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=1771291036 | ||||||
rank #591 in the tld
WOT: SAFE (88/100)
📈 Tranco rank: #245,847
Subdomains
irp2.ctk.cz |
ctkiristest.ctk.cz |
sapkos.ctk.cz |
nib.ctk.cz |
foto.ctk.cz |
irp3.ctk.cz |
irp.ctk.cz |
ib.ctk.cz |
mail.ctk.cz |
multimedia.ctk.cz |
nseltest.ctk.cz |
nibweb.ctk.cz |
fotobanka.ctk.cz |
liveb2.ctk.cz |
ns.ctk.cz |
fwph.ctk.cz |
fw.ctk.cz |
ftp.ctk.cz |
tvprotext.ctk.cz |
widget.ctk.cz |
posta.ctk.cz |
data.ctk.cz |
ctkxzir.ctk.cz |
fw3.ctk.cz |
nsel.ctk.cz |
newsml.ctk.cz |
mobi.ctk.cz |
nsel1.ctk.cz |
fw2.ctk.cz |
dias.ctk.cz |
www.ctk.cz |
Same first word
Similar names
DNS History
10 records (8 active, 2 former)
●NSns.ceskenoviny.cz2015-08-28 → 2026-03-22 · 2 obs
● 2026-03-22 23:41:14
●NSns.ctk.cz2015-08-28 → 2026-03-22 · 2 obs
● 2026-03-22 23:41:14
●MXirp.ctk.cz2015-08-28 → 2026-03-22 · 2 obs
● 2026-03-22 23:41:14
●MXirp2.ctk.cz2015-08-28 → 2026-03-22 · 2 obs
● 2026-03-22 23:41:14
●MXirp3.ctk.cz2026-02-15 → 2026-03-22 · 3 obs
● 2026-02-15 05:16:22
● 2026-03-22 23:41:14
●MXmail.ctk.cz2015-08-28 → 2026-03-22 · 2 obs
● 2026-03-22 23:41:14
○MXmspool.gts.cz2015-08-28 → 2019-11-28 · 4 obs
● 2019-11-28 03:49:10
○ 2026-02-15 05:16:22
○ 2026-03-22 23:41:14
●MXsupport.clapix.com2026-02-15 → 2026-03-22 · 3 obs
● 2026-02-15 05:16:22
● 2026-03-22 23:41:14
○A80.79.27.442015-08-28 → 2019-11-28 · 4 obs
● 2019-11-28 03:49:10
○ 2026-02-15 05:16:22
○ 2026-03-22 23:41:14
●A80.79.27.482026-02-15 → 2026-03-22 · 3 obs
● 2026-02-15 05:16:22
● 2026-03-22 23:41:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz, d.ns.nic.cz | - |
| ctk.cz | ns.ctk.cz, ns.ceskenoviny.cz | 3 records |
✅ Authoritative Response
Server:62.168.9.230
NS records: ns.ctk.cz, ns.ceskenoviny.cz
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ctk.cz (unsigned zone)
⏱️ Timing
Total: 1091ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 80.79.27.48 |
| NS | 2 | ns.ceskenoviny.cz, ns.ctk.cz |
| MX | 5 | irp3.ctk.cz (pri: 50), irp.ctk.cz (pri: 5)... |
| TXT | 4 | v=spf1 mx ip4:62.168.9.222 ip4:62.168.9., google-site-verification=usQu7gdsyVeWZSP... |
| SOA | 1 | ns.ctk.cz postmaster.ctk.cz |
📌 Glue Records Collected
Total: 3
In-bailiwick: 1 (ns.ctk.cz)
Out-of-bailiwick: 2 (ns.ceskenoviny.cz, ns.ceskenoviny.cz)
Analysis
Hierarchy
ctk.cz is a parent of irp2.ctk.cz, ctkiristest.ctk.cz, sapkos.ctk.cz, nib.ctk.cz, foto.ctk.cz and a few other host names.
IP Addresses
ctk.cz points to a single IP address: 80.79.27.48.
Other host names such as cn.cz, sn.cz, *.cn.cz, financninoviny.cz and www.ceskenoviny.cz share IPs with ctk.cz.
Name Servers
Two name servers ns.ceskenoviny.cz and ns.ctk.cz handle the delegation for ctk.cz.
ctk.cz shares the same name server setup as other domains, for example sn.cz, financninoviny.cz, neris.info, ctk.sk and cetka.cz.
ctk.cz partially shares name servers with other domains, for example protext.cz and protext.info.
Host names with two IP numbers:
ns.ceskenoviny.cz points to 2a01:430:0:37::44 and 80.79.27.44.
Host names with one IP number:
ns.ctk.cz points to 62.168.9.230.
Mail Servers
ctk.cz is handled by five mail servers: support.clapix.com, irp2.ctk.cz, irp3.ctk.cz, irp.ctk.cz and mail.ctk.cz.
ctk.cz shares at least partially some mail servers with other domains, for instance financninoviny.cz, neris.info, mail.ctk.cz, multimedia.ctk.cz and ceskenoviny.info.
these mail servers are commonly used with ctkxzir.ctk.cz.
Host names with one IP number:
support.clapix.com points to 193.86.66.196
irp2.ctk.cz points to 62.168.9.223
irp3.ctk.cz points to 94.247.37.222
irp.ctk.cz points to 62.168.9.222
mail.ctk.cz points to 62.168.9.132