cdrest.cz - robtex.com
cdrest.cz
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.cdt.cz ⭐ | ||||||
| A | 2001:1a48:0:1::2🇨🇿 CDT-AS2001:1a48::/32 CD-Telematika a.s. The Czech Republic | ||||||
| PTR | ns1.cdt.cz | ||||||
| A | 81.19.33.2🇨🇿 CDT-AS81.19.32.0/20 CD-Telematika a.s. The Czech Republic | ||||||
| PTR | ns1.cdt.cz | ||||||
| NS | ns2.cdt.cz | ||||||
| A | 2001:1a48:0:2::2🇨🇿 CDT-AS2001:1a48::/32 CD-Telematika a.s. The Czech Republic | ||||||
| PTR | ns2.cdt.cz | ||||||
| A | 81.19.34.2🇨🇿 CDT-AS81.19.32.0/20 CD-Telematika a.s. The Czech Republic | ||||||
| PTR | ns2.cdt.cz | ||||||
| MX | smtp.cdtnet.cz ⭐ | ||||||
| A | 82.117.148.199🇨🇿 CDT-AS82.117.128.0/19 CD-Telematika a.s. The Czech Republic | ||||||
| PTR | smtp.cdtnet.cz | ||||||
| TXT | v=spf1 mx a:smtp.cdtnet.cz ~all | ||||||
| SOA | ns1.cdt.czhostmaster@cdt.cz 2026-01-07 #0 | ||||||
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=1778534236 | ||||||
Subdomains
www.cdrest.cz |
Same first word
cdrest.cz |
Similar names
crestd.com |
rdcets.com |
rsdtec.com |
cdtser.com |
rdstec.co.uk |
cdster.com |
credts.com |
redsct.com |
tdrecs.com |
drstec.com |
sdctre.com |
sdcert.net |
cestdr.com |
rdstec.com.br |
dcerts.com |
dtrsec.com |
rdstec.com |
sdcert.org |
DNS History
9 records (3 active, 6 former)
○NSns01.dmz.cdisnet.cz2015-06-11 → 2016-10-30 · 9 obs
○ 2015-10-29 04:01:56
○ 2016-01-08 11:19:22
● 2016-04-03 12:09:28
○ 2016-06-16 03:38:48
● 2016-06-27 07:13:32
● 2016-10-30 23:23:16
○ 2026-03-19 12:34:30
○ 2026-05-11 21:27:32
○NSns02.dmz.cdisnet.cz2015-06-11 → 2016-10-30 · 8 obs
● 2016-01-08 11:19:22
○ 2016-04-03 12:09:28
● 2016-06-16 03:38:48
○ 2016-06-27 07:13:32
● 2016-10-30 23:23:16
○ 2026-03-19 12:34:30
○ 2026-05-11 21:27:32
●NSns1.cdt.cz2026-03-19 → 2026-05-11 · 3 obs
● 2026-03-19 12:34:30
● 2026-05-11 21:27:32
●NSns2.cdt.cz2026-03-19 → 2026-05-11 · 3 obs
● 2026-03-19 12:34:30
● 2026-05-11 21:27:32
○MXmail-i01.dmz.cd.cz2015-06-11 → 2016-04-03 · 4 obs
● 2016-04-03 12:09:28
○ 2016-06-16 03:38:48
○ 2026-05-11 21:27:32
○MXns-i01.dmz.cd.cz2015-06-11 → 2016-04-03 · 4 obs
● 2016-04-03 12:09:28
○ 2016-06-16 03:38:48
○ 2026-05-11 21:27:32
○MXsis0000phaux801.ecps.cz2016-06-16 → 2016-10-30 · 5 obs
● 2016-06-16 03:38:48
● 2016-10-30 23:23:16
○ 2026-03-19 12:34:30
○ 2026-05-11 21:27:32
○MXsis0000phaux821.ecps.cz2016-06-16 → 2016-10-30 · 5 obs
● 2016-06-16 03:38:48
● 2016-10-30 23:23:16
○ 2026-03-19 12:34:30
○ 2026-05-11 21:27:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| cdrest.cz | ns1.cdt.cz, ns2.cdt.cz | 4 records |
✅ Authoritative Response
Server:81.19.33.2
NS records: ns1.cdt.cz, ns2.cdt.cz
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cdrest.cz (unsigned zone)
⏱️ Timing
Total: 797ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | ns1.cdt.cz, ns2.cdt.cz |
| MX | 1 | smtp.cdtnet.cz (pri: 10) |
| TXT | 1 | v=spf1 mx a:smtp.cdtnet.cz ~all |
| SOA | 1 | ns1.cdt.cz hostmaster.cdt.cz |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns2.cdt.cz, ns1.cdt.cz, ns2.cdt.cz...)
Analysis
Hierarchy
cdrest.cz is a parent of www.cdrest.cz.
Name Servers
Delegation for cdrest.cz rests with two name servers, ns1.cdt.cz and ns2.cdt.cz.
cdrest.cz shares the same name server setup as other domains, including cdnostalgie.cz, cdccz.net, cdcnet.cz, cd.cz and cdwifi.cz.
cdrest.cz at least partially shares name servers with other domains, for instance zez-silko.biz, kuempers.cz, ricky.cz, 185.203.89.in-addr.arpa and hexastream.com.
These name servers are often used together with ns.cdt.cz, dns.alberon.cz, ns1.mirnet.cz, ns.vlada.cz and nssec.vlada.cz.
Host names with two IP numbers: ns1.cdt.cz points to 2001:1a48:0:1::2 and 81.19.33.2; ns2.cdt.cz points to 2001:1a48:0:2::2 and 81.19.34.2.
Mail Servers
cdrest.cz is handled by a single mail server, smtp.cdtnet.cz.
cdrest.cz uses the same mail server configuration as other domains, such as cis.cd.cz, ldgw.cd.cz, cdmuzeum.cz, cdnostalgie.cz and cdcnet.cz.
smtp.cdtnet.cz points to a single IP: 82.117.148.199.