Cdt.cz ČD - Telematika

Cdt.cz Quick Summary

Status

Offline

Server IP address resolved: No

Http response code: None

Last Checked: 06/06/2025

Cdt.cz traffic estimate is about 1,434 unique visitors and 2,868 pageviews per day. The approximated value of cdt.cz is 2,160 USD. Every unique visitor makes about 2 pageviews on average.

Alexa Traffic Rank estimates that cdt.cz is ranked number 39,806 in the world.

Cdt.cz server is located in Czech Republic, but, unfortunately, we cannot identify the countries where the visitors come from and thus it’s impossible to define if the distance can potentially affect the page load time. See the list of other websites hosted by CD-Telematika a.s.

Cdt.cz is registered under .CZ top-level domain. Check other websites in .CZ zone.

During the last check (August 02, 2024) cdt.cz has an expired SSL certificate issued by Let's Encrypt (expired on October 13, 2024), please click the “Refresh” button for SSL Information at the Safety Information section. Check other websites using SSL certificates issued by Let's Encrypt.

In accordance with Google Safe Browsing and Symantec cdt.cz is pretty a safe domain.

Relying on Google Mobile-Friendly test cdt.cz is well optimized for mobile and tablet devices, however website page loading time may be improved.

Cdt.cz General Information

Cdt.cz Audience Geography

Where are website visitors coming from?

Visitors
Pageviews
Ranks

Country	Visitors

Cdt.cz Traffic Distribution

Where do visitors go on cdt.cz?

Subdomain Traffic
Views per User
Subdomain Reach

Subdomain	Pageviews

Cdt.cz Popularity

How popular is cdt.cz?

Global Rank
Pageviews
Reach

Period	Global Rank	Global Rank Delta

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Cdt.cz Safety Information

Rankchart Summary

Unknown

Updated: 06/06/2025

We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.

Norton Connect Safe

Safe

Updated: 02/04/2025

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Norton ConnectSafe evaluates websites for any unsafe and inapropriate content. The results are important for families with young children.

Google Safe Search

Unknown

Updated: 06/06/2025

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SafeSearch works as a parental control tool to filter out any content that might be inappropriate for your children.

Google Safe Browsing

Safe

Malware not found

Phishing not detected

Unwanted software not found

Harmfull applications not found

Updated: 01/09/2019

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Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.

McAfee® WebAdvisor

Safe

Updated: 01/05/2021

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McAfee assesses cdt.cz for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze cdt.cz for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Not Checked

Updated: 06/06/2025

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The WOT calculates reputation of the cdt.cz. This reputation system receives ratings from users and information from third-party sources, assesses the cdt.cz for safety features and confirms, whether cdt.cz is suitable for children.

Cdt.cz SSL Information

Information about SSL/TLS certificates

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Domain	cdt.cz
Issuer Organization	Let's Encrypt
Issuer	R10
Algorithm	RSA-SHA256
Valid form	07/15/2024
Expiration	10/13/2024
Signed	Certificate is not self signed
Additional Domains	cdt.cz

SSL Checker

Cdt.cz Server Information

Cdt.cz Server Location

Where website hosting server is located?

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Cdt.cz ASN Information

Information about IP address owner

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ASN ID: 25512

ASN Title: CD-Telematika a.s.

Updated: 12/21/2024

Raw ASN data:

% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See http://www.ripe.net/db/support/db-terms-conditions.pdf

% Note: this output has been filtered.
% To receive output for a database update, use the "-B" flag.

% Information related to 'AS25365 - AS25542'

as-block: AS25365 - AS25542
descr: RIPE NCC ASN block
remarks: These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by: RIPE-NCC-HM-MNT
created: 2010-05-11T11:46:16Z
last-modified: 2014-02-24T13:15:17Z
source: RIPE

% Information related to 'AS25512'

% Abuse contact for 'AS25512' is 'abuse@cdt.cz'

aut-num: AS25512
as-name: CDT-AS
descr: The Czech Republic
org: ORG-CTa3-RIPE
remarks: # TRANSIT
import: from AS1299 accept ANY # TELIA
export: to AS1299 announce AS-CDT-NETWORKS
import: from AS174 accept ANY # COGENT
export: to AS174 announce AS-CDT-NETWORKS
remarks: # Peering
import: from AS6881 accept ANY # NIXCZ
export: to AS6881 announce AS-CDT-NETWORKS
import: from AS47200 accept ANY # NIX Routeservers
export: to AS47200 announce ANY
import: from AS47627 accept ANY # NIXSK Routeservers
export: to AS47627 announce ANY
remarks: # CUSTOMERS
import: from AS6740 accept ANY # TS-Data
export: to AS6740 announce ANY
import: from AS6881 accept ANY # NIX
export: to AS6881 announce ANY
import: from AS21241 accept ANY # MUZO
export: to AS21241 announce ANY
import: from AS34040 accept ANY # TTNET
export: to AS34040 announce ANY
import: from AS35046 accept ANY # Omega
export: to AS35046 announce ANY
import: from AS43507 accept ANY # RETE
export: to AS43507 announce ANY
import: from AS43708 accept ANY # IJC
export: to AS43708 announce ANY
import: from AS43709 accept ANY # SILESNET
export: to AS43709 announce ANY
import: from AS43757 accept ANY # ICZ
export: to AS43757 announce ANY
import: from AS44424 accept ANY # MALL
export: to AS44424 announce ANY
import: from AS47767 accept ANY # RCO
export: to AS47767 announce ANY
import: from AS47868 accept ANY # SUPRO
export: to AS47868 announce ANY
import: from AS48417 accept ANY # ITS
export: to AS48417 announce ANY
import: from AS51134 accept ANY # MASTER INTERNET
export: to AS51134 announce ANY
import: from AS51463 accept ANY # OKNET
export: to AS51463 announce ANY
import: from AS197566 accept ANY # OKNET
export: to AS197566 announce ANY
import: from AS56450 accept ANY # ALBERON
export: to AS56450 announce ANY
import: from AS196845 accept ANY # OMEGATECH
export: to AS196845 announce ANY
import: from AS197550 accept ANY # INTERNET4YOU
export: to AS197550 announce ANY
import: from AS49101 accept ANY # KTCZ
export: to AS49101 announce ANY
import: from AS51524 accept ANY # ATESACEK
export: to AS51524 announce ANY
import: from AS198027 accept ANY # VITKOVICE IT SOLUTION
export: to AS198027 announce ANY
import: from AS56827 accept ANY # MIRNET SRO
export: to AS56827 announce ANY
import: from AS56624 accept ANY # RTYNE NET
export: to AS56624 announce ANY
import: from AS57287 accept ANY # OTAVANET
export: to AS57287 announce ANY
import: from AS56566 accept ANY # SATT
export: to AS56566 announce ANY
import: from AS56907 accept ANY # TRAVEL TELEKOM
export: to AS56907 announce ANY
import: from AS198403 accept ANY # MATRIGO
export: to AS198403 announce ANY
import: from AS56717 accept ANY # RESAL
export: to AS56717 announce ANY
import: from AS57823 accept ANY # KKNET
export: to AS57823 announce ANY
import: from AS197698 accept ANY # D-H-T
export: to AS197698 announce ANY
import: from AS47131 accept ANY # PHSPOL
export: to AS47131 announce ANY
import: from AS51420 accept ANY # ODEMON
export: to AS51420 announce ANY
import: from AS43614 accept ANY # ECONOMIA
export: to AS43614 announce ANY
remarks:
admin-c: CDT-RIPE
tech-c: CDT-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: CDT-MNT
mnt-routes: CDT-MNT
created: 2002-12-17T14:28:40Z
last-modified: 2018-06-20T12:37:55Z
source: RIPE

organisation: ORG-CTa3-RIPE
org-name: CD-Telematika a.s.
org-type: LIR
address: Pod Taborem 369/8a
address: 191 00
address: Praha 9
address: CZECH REPUBLIC
phone: +420210021695
fax-no: +420210021610
admin-c: CJ167-RIPE
admin-c: PL1116-RIPE
abuse-c: CDT-RIPE
mnt-ref: RIPE-NCC-HM-MNT
mnt-ref: CDT-MNT
mnt-by: RIPE-NCC-HM-MNT
mnt-by: CDT-MNT
created: 2004-04-17T11:04:09Z
last-modified: 2016-12-13T09:34:52Z
source: RIPE # Filtered

role: CDT hostmaster
address: CD-Telematika a.s.
address: Pod Taborem 6
address: Praha 9
address: 191 00
address: The Czech Republic
phone: +420 210021 685
fax-no: +420 210021 699
remarks: --------------------------------------------------
remarks: abuse and spam reports please mail to abuse@cdt.cz
remarks:
remarks: peering and technical communication
remarks: mail to ip(at)cdt.cz
remarks: --------------------------------------------------
admin-c: PL1116-RIPE
admin-c: CJ167-RIPE
admin-c: ZP642-RIPE
tech-c: PL1116-RIPE
tech-c: CJ167-RIPE
tech-c: ZP642-RIPE
abuse-mailbox: abuse@cdt.cz
nic-hdl: CDT-RIPE
mnt-by: CDT-MNT
created: 2004-01-26T14:58:45Z
last-modified: 2017-01-11T11:22:58Z
source: RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.91.2 (WAGYU)

Geolocation

ASN Lookup

Cdt.cz Domain Name Information

Cdt.cz DNS Information

Domain name service records

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A
MX
NS
TXT
SOA

Host	A Record	TTL
cdt.cz	81.19.34.226	86400

Host	MX Record	Priority	TTL
cdt.cz	mailgw2.cdt.cz	20	86400
cdt.cz	mailgw1.cdt.cz	10	86400

Host	NS Record	TTL
cdt.cz	ns1.cdt.cz	86400
cdt.cz	ns2.cdt.cz	86400

Host	TXT Record	TTL
cdt.cz	PR2-MLD-P03	86400
cdt.cz	MS=ms75454862	86400
cdt.cz	MS=9E5CD30317FC9C12FB641204F4567F88614F09B8	86400
cdt.cz	66fxvg76jmpj2gcb7xz3tc9d2xpydv72	86400
cdt.cz	3m80tq12vzfb41ntwz03zy9ppvh91qfv	86400
cdt.cz	v=spf1 mx ip4:82.117.128.37/32 ip4:81.19.33.2/32 ip4:81.19.34.2/32 ip4:81.19.46.20/32 ip4:81.19.46.25/32 ip4:81.19.46.4/32 ip6:2001:1a48:0:1::2/64 ip6:2001:1a48:0:2::2/64 a:mailgw1.cdt.cz a:mailgw2.cdt.cz include:spf.protection.outlook.com -all	86400

Cdt.cz Whois Information

Information about registered users or assignees of an Internet resource

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Raw WHOIS data:

% (c) 2006-2021 CZ.NIC, z.s.p.o.
%
% Intended use of supplied data and information
%
% Data contained in the domain name register, as well as information
% supplied through public information services of CZ.NIC association,
% are appointed only for purposes connected with Internet network
% administration and operation, or for the purpose of legal or other
% similar proceedings, in process as regards a matter connected
% particularly with holding and using a concrete domain name.
%
% Full text available at:
% http://www.nic.cz/page/306/intended-use-of-supplied-data-and-information/
%
% See also a search service at http://www.nic.cz/whois/
%
%
% Whoisd Server Version: 3.15.0
% Timestamp: Sat Feb 22 07:27:13 2025

domain: cdt.cz
registrant: CDT-DOMENY
admin-c: CDT-DOMENY
nsset: NSS:CZ-CDT:1
keyset: AUTO-55KZ8TLGHY7QUNZ3BWL2S44BX
registrar: REG-INTERNET-CZ
registered: 07.09.2000 02:11:00
changed: 26.11.2022 14:59:54
expire: 07.09.2025

contact: CDT-DOMENY
org: ČD - Telematika, a.s.
name: Pavel Tvrdík
address: Pernerova 2819/2a
address: Praha 3
address: 130 00
address: CZ
registrar: REG-WEBGLOBE
created: 15.03.2016 07:49:03
changed: 15.05.2018 21:32:00

nsset: NSS:CZ-CDT:1
nserver: ns1.cdt.cz (81.19.33.2, 2001:1a48:0:1::2)
nserver: ns2.cdt.cz (81.19.34.2, 2001:1a48:0:2::2)
tech-c: CZ-PZ
tech-c: CDT-TS-IP
registrar: REG-WEBGLOBE
created: 01.10.2007 02:00:00
changed: 11.12.2024 10:31:28

contact: CZ-PZ
name: Pavel Zelený
address: Pod Táborem 369/8a
address: Praha 9
address: 190 00
address: CZ
registrar: REG-INTERNET-CZ
created: 17.06.2012 01:09:03
changed: 15.05.2018 21:32:00

contact: CDT-TS-IP
org: ČD-Telematika a.s.
name: CDT TS IP
address: Pod Táborem 369/8a
address: Praha 9
address: 190 00
address: CZ
registrar: REG-INTERNET-CZ
created: 25.06.2012 18:11:03
changed: 15.05.2018 21:32:00

keyset: AUTO-55KZ8TLGHY7QUNZ3BWL2S44BX
dnskey: 257 3 13 K2cjpexeieHA3kK6JKvylWmDK8I0cTpHu+zcElnFUAKwBQtbRdvEC8Djflox7QS2gDZg9vOorZCYdRdZ2zBRHQ==
tech-c: CZNIC-AKM
registrar: REG-CZNIC
created: 26.11.2022 14:59:54
changed: 12.02.2025 14:36:46

contact: CZNIC-AKM
org: CZ.NIC, z.s.p.o.
name: CZ.NIC, z.s.p.o.
address: Milesovska 1136/5
address: Praha 3
address: 13000
address: CZ
registrar: REG-CZNIC
created: 12.08.2024 15:02:38

Whois

DNS Lookup

Cdt.cz HTML Validation

Cdt.cz W3C HTML Markup Validation

HTML markup errors and warnings

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Errors:

Obsolete doctype. Expected “<!DOCTYPE html>”.

Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.

A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.

Bad value “screen,projection,tv” for attribute “media” on element “style”: Deprecated media type “projection”. For guidance, see the Media Types section in the current Media Queries specification.

Bad value “Pragma” for attribute “http-equiv” on element “meta”.

Bad value “Cache-Control” for attribute “http-equiv” on element “meta”.

Bad value “Expires” for attribute “http-equiv” on element “meta”.

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Element “h4” not allowed as child of element “a” in this context. (Suppressing further errors from this subtree.)

HTML Validator

Cdt.cz Desktop Performance

How Well Cdt.cz Performs On Desktops?

Website desktop performance and usability tips

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Speed
Resource Breakdown

Speed

63%

Enable compression

Leverage browser caching

Optimize images

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Minify JavaScript

Minify CSS

Minify HTML

Updated: 05/31/2017

Cdt.cz Mobile Performance

How Optimized Is Cdt.cz for Mobile Devices?

Tips on speeding up mobile site performance

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Usability
Speed
Resource Breakdown

Usability

100%

Updated: 05/31/2017

Cdt.cz Nearest Competitors

Estimated Nearest Competitors Of Cdt.cz

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thewashcycle.com
totalscifionline.com
cdt.cz
badische-weinstrasse.de
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yarrariver.melbourne
hkitalk.net
subsource.net
alhirschfeldfoundation.org
delbarton.org
swissnexboston.org
galaktyka.com.pl
galilu.pl

Cdt.cz URL Typos

Most common user URL mistypes for cdt.cz

www.cdt.com
www.cdt.net
www.cdt.org
www.cdt.info
www.cdt.biz
www.cdt.us
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www.crdt.cz
www.cft.cz
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www.cct.cz
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www.ccdt.cz
www.cd.cz
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www.cdf.cz
www.cdtf.cz
www.cdg.cz
www.cdtg.cz
www.cdgt.cz
www.cdy.cz
www.cdty.cz
www.cdyt.cz

Total Resources	55
Number of Hosts	4
Static Resources	38
JavaScript Resources	9
CSS Resources	4

CSS	64.8 KBytes
Images	573.1 KBytes
HTML	24.9 KBytes
JavaScript	216.9 KBytes
Other	1.1 KBytes

Total Resources	55
Number of Hosts	4
Static Resources	37
JavaScript Resources	11
CSS Resources	5

CSS	67.4 KBytes
Images	254.1 KBytes
HTML	28.0 KBytes
JavaScript	297.7 KBytes
Other	334.0 Bytes