sysifos.cz ▶ Sisyfos - český klub skeptiků

Sysifos.cz | Key Trends

Online Status

Online

Server IP address resolved: Yes
Http response code: 200
Response time: 0.37 sec.
Last Checked: 07/20/2025

Sysifos.cz attracts 1,869 unique visitors daily, generating 3,739 pageviews. The estimated value of sysifos.cz is 2,825 USD. Each visitor views approximately 2.14 pages on average.

According to Majestic's traffic estimates, sysifos.cz ranks 186,979 globally.

Sysifos.cz server is located in Czech Republic, so we cannot determine if the distance might affect the page load time.

See the list of other websites hosted by Team Internet AG.

Sysifos.cz is registered with the .CZ top-level domain. Explore additional websites within the .CZ zone.

A recent examination on (June 30, 2024), indicates that sysifos.cz has an expired SSL certificate issued by Let's Encrypt (expired on September 23, 2024). Click the "Refresh" button in the Safety Information section for updated SSL details. See the list of websites using SSL certificates issued by Let's Encrypt.

According to Google Safe Browsing, Symantec and Web of Trust sysifos.cz appears to be a safe domain.

Based on Google's Mobile-Friendly test, sysifos.cz is optimized for mobile and tablet devices.

Sysifos.cz | General Site Information

Global Rank

Average Load Time

0.00sec

Links In Count

Website Value

$2,640

Audience Geography. Where are sysifos.cz visitors located?

Country	Visitors

Country	Pageviews

Country	Rank

Where do visitors go on sysifos.cz?

Subdomain	Pageviews

Subdomain	Pageviews per User

Subdomain	Reach

How popular is sysifos.cz?

Period	Global Rank	Global Rank Delta

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta

Sysifos.cz | Safety and Security Details

Overview

Last Updated: 07/20/2025

Unknown status.

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

Last Updated: 12/02/2020

sysifos.cz is safe.

Norton ConnectSafe evaluates sysifos.cz for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search

Last Updated: 07/20/2025

Unknown status.

SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.

Google Safe Browsing

Last Updated: 01/09/2019

sysifos.cz is safe.
Malware: not found.
Phishing: not detected.
Unwanted software: not found.
Harmfull applications: not found.

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

Site Advisor

Last Updated: 02/16/2021

sysifos.cz is safe.

McAfee assesses sysifos.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 sysifos.cz for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 01/12/2019

sysifos.cz child safety is very good.

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

Sysifos.cz | SSL Certificate Information

SSL Checker Tool

Domain	sysifos.cz
Issuer Organization	Let's Encrypt
Issuer	R11
Algorithm	RSA-SHA256
Valid form	06/25/2024
Expiration	09/23/2024
Signed	Certificate is not self signed
Additional Domains	sysifos.cz

Sysifos.cz | Server and Hosting Details

Server Location

Geolocation Tool

Sysifos.cz ASN Information

ASN Lookup Tool

ASN ID: 206834
ASN Title: Team Internet AG

Last Update: 07/08/2025

ASN Whois

% 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 'AS196608 - AS207259'

as-block: AS196608 - AS207259
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: 2016-09-08T07:26:53Z
last-modified: 2016-09-08T07:26:53Z
source: RIPE

% Information related to 'AS206834'

% Abuse contact for 'AS206834' is 'abuse@teaminternet.com'

aut-num: AS206834
as-name: TEAMINTERNET-CA-AS
org: ORG-TIA27-RIPE
import: from AS7057 accept ANY
export: to AS7057 announce AS206834
import: from AS13727 accept ANY
export: to AS13727 announce AS206834
admin-c: TI998-RIPE
tech-c: TI998-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: TIA27-MNT
mnt-routes: TIA27-MNT
mnt-routes: ND-NOC-MNT
created: 2016-10-27T07:04:01Z
last-modified: 2017-11-15T12:39:48Z
source: RIPE

organisation: ORG-TIA27-RIPE
org-name: Team Internet AG
org-type: LIR
address: Liebherrstr. 22
address: 80538
address: Muenchen
address: GERMANY
phone: +4989416146013
fax-no: +4989416146090
mnt-ref: TIA27-MNT
mnt-ref: RIPE-NCC-HM-MNT
mnt-by: RIPE-NCC-HM-MNT
mnt-by: TIA27-MNT
abuse-c: TI913-RIPE
created: 2014-03-25T15:08:20Z
last-modified: 2016-10-06T15:46:25Z
source: RIPE # Filtered

role: Network Operations Team
address: Team Internet AG
address: Network Operations
nic-hdl: TI998-RIPE
mnt-by: TIA27-MNT
created: 2015-03-09T10:55:22Z
last-modified: 2015-03-09T10:55:22Z
source: RIPE # Filtered

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

Sysifos.cz | Domain Name Information

WHOIS

WHOIS Lookup Tool

Domain Whois

% (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: Sun Oct 27 22:46:07 2024

domain: sysifos.cz
registrant: WEBINVEST
nsset: WIPARK02052024
registrar: REG-INTERNET-CZ
registered: 04.01.2022 13:43:06
changed: 02.05.2024 00:31:18
expire: 04.01.2025

contact: WEBINVEST
org: Web Invest s.r.o.
name: Jiří Smetana
address: Pod Babykou 250
address: Vsetín
address: 75501
address: CZ
phone: +420.603203203
e-mail: domeny@webinvest.cz
registrar: REG-MOJEID
created: 07.09.2015 23:15:59
changed: 23.05.2024 00:08:33

nsset: WIPARK02052024
nserver: ns1.parkingcrew.net
nserver: ns2.parkingcrew.net
tech-c: WEBINVEST
registrar: REG-INTERNET-CZ
created: 02.05.2024 00:22:18

DNS Records

DNS Lookup Tool

Host	A Record	TTL
sysifos.cz	217.31.57.146	600

Host	MX Record	Priority	TTL
sysifos.cz	mx.sysifos.cz	10	600

Host	NS Record	TTL
sysifos.cz	ns.rozhled.cz	600
sysifos.cz	ns.rozhled.eu	600

Host	TXT Record	TTL

ns.rozhled.cz
TTL: 600
Email address: admin.rozhled.cz
Serial: 2018121003
Refresh: 3600
Retry: 900
Expire: 1209600
Minimum: 600

Sysifos.cz | HTML Validation Report

HTML Validation Tool

Errors

Malformed byte sequence: “f8”.

Malformed byte sequence: “e1”.

Malformed byte sequence: “ed”.

Malformed byte sequence: “e8”.

Malformed byte sequence: “e9”.

Start tag seen without seeing a doctype first. Expected “<!DOCTYPE html>”.

Internal encoding declaration “windows-1250” disagrees with the actual encoding of the document (“utf-8”).

Attribute “najman,” not allowed on element “meta” at this point.

Attribute “petr” not allowed on element “meta” at this point.

Attribute “dvo��k” not allowed on element “meta” at this point.

Attribute “alternativn�,” not allowed on element “meta” at this point.

Attribute “antroposofie,” not allowed on element “meta” at this point.

Attribute “astr�l,” not allowed on element “meta” at this point.

Attribute “astrologie,” not allowed on element “meta” at this point.

Attribute “balvan,” not allowed on element “meta” at this point.

Attribute “biorezonan�n�,” not allowed on element “meta” at this point.

Attribute “�akry,” not allowed on element “meta” at this point.

Attribute “darwin,” not allowed on element “meta” at this point.

Attribute “elektrosmog,” not allowed on element “meta” at this point.

Attribute “energie,” not allowed on element “meta” at this point.

Attribute “grafologie,” not allowed on element “meta” at this point.

Attribute “holotropn�,” not allowed on element “meta” at this point.

Attribute “homeopatie,” not allowed on element “meta” at this point.

Attribute “karma,” not allowed on element “meta” at this point.

Attribute “kineziologie,” not allowed on element “meta” at this point.

Attribute “kreacionismus,” not allowed on element “meta” at this point.

Attribute “l��itel,” not allowed on element “meta” at this point.

Attribute “magnetokineze,” not allowed on element “meta” at this point.

Attribute “numerologie,” not allowed on element “meta” at this point.

Attribute “okultn�,” not allowed on element “meta” at this point.

Attribute “paranorm�ln�,” not allowed on element “meta” at this point.

Attribute “parapsychologie,” not allowed on element “meta” at this point.

Attribute “patogenn�,” not allowed on element “meta” at this point.

Attribute “proutka�,” not allowed on element “meta” at this point.

Attribute “psychotronik,” not allowed on element “meta” at this point.

Attribute “pyramida,” not allowed on element “meta” at this point.

Attribute “reinkarnace,” not allowed on element “meta” at this point.

Attribute “senzibil,” not allowed on element “meta” at this point.

Attribute “sisyfos,” not allowed on element “meta” at this point.

Attribute “skeptik,” not allowed on element “meta” at this point.

Attribute “spiritismus,” not allowed on element “meta” at this point.

Attribute “tachyon,” not allowed on element “meta” at this point.

Attribute “telepatie,” not allowed on element “meta” at this point.

Attribute “ufo,” not allowed on element “meta” at this point.

Attribute “z�hady” not allowed on element “meta” at this point.

Element “meta” is missing one or more of the following attributes: “http-equiv”, “itemprop”, “name”, “property”.

Malformed byte sequence: “c8”.

Malformed byte sequence: “fd”.

Malformed byte sequence: “f9”.

Malformed byte sequence: “ec”.

Malformed byte sequence: “9a”.

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

Bad value “schema.DC” for attribute “rel” on element “link”: The string “schema.DC” is not a registered keyword.

The “scheme” attribute on the “meta” element is obsolete. Use only one scheme per field, or make the scheme declaration part of the value.

No space between attributes.

Saw “"” when expecting an attribute name. Probable cause: “=” missing immediately before.

Attribute “"” not allowed on element “meta” at this point.

Element “head” is missing a required instance of child element “title”.

The “center” element is obsolete. Use CSS instead.

The “valign” attribute on the “td” element is obsolete. Use CSS instead.

Attribute “maxlenght” not allowed on element “input” at this point.

Duplicate ID “blok002”.

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

The “font” element is obsolete. Use CSS instead.

Malformed byte sequence: “e1”, “9a”.

End tag “div” seen, but there were open elements.

Unclosed element “font”.

End tag “a” violates nesting rules.

Duplicate ID “menu”.

Bad value “index.php?id=homepage&idd=bludn� balvan” for attribute “href” on element “a”: Illegal character in query: “�” is not allowed.

Bad value “index.php?id=homepage&idd=nab�dka p�edn�ek” for attribute “href” on element “a”: Illegal character in query: “�” is not allowed.

Bad value “index.php?id=homepage&idd=sborn�k&lang=cz” for attribute “href” on element “a”: Illegal character in query: “�” is not allowed.

Bad value “index.php?id=novinky mailem” for attribute “href” on element “a”: Illegal character in query: space is not allowed.

No “font” element in scope but a “font” end tag seen.

Duplicate ID “blok005”.

The “big” element is obsolete. Use CSS instead.

Malformed byte sequence: “ed”, “9e”.

Duplicate ID “blok003”.

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

Malformed byte sequence: “9e”.

Malformed byte sequence: “fa”.

Malformed byte sequence: “f3”.

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

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

Duplicate ID “blok004”.

Duplicate ID “blok006”.

Bad value “index.php?id=archiv&idd=�l�nek en&lang=en” for attribute “href” on element “a”: Illegal character in query: “�” is not allowed.

Malformed byte sequence: “8a”.

Malformed byte sequence: “f2”.

Malformed byte sequence: “da”.

Too many messages.

Warnings

Attribute “najman,” is not serializable as XML 1.0.

Attribute “dvo��k” is not serializable as XML 1.0.

Attribute “alternativn�,” is not serializable as XML 1.0.

Attribute “antroposofie,” is not serializable as XML 1.0.

Attribute “astr�l,” is not serializable as XML 1.0.

Attribute “astrologie,” is not serializable as XML 1.0.

Attribute “balvan,” is not serializable as XML 1.0.

Attribute “biorezonan�n�,” is not serializable as XML 1.0.

Attribute “�akry,” is not serializable as XML 1.0.

Attribute “darwin,” is not serializable as XML 1.0.

Attribute “elektrosmog,” is not serializable as XML 1.0.

Attribute “energie,” is not serializable as XML 1.0.

Attribute “grafologie,” is not serializable as XML 1.0.

Attribute “holotropn�,” is not serializable as XML 1.0.

Attribute “homeopatie,” is not serializable as XML 1.0.

Attribute “karma,” is not serializable as XML 1.0.

Attribute “kineziologie,” is not serializable as XML 1.0.

Attribute “kreacionismus,” is not serializable as XML 1.0.

Attribute “l��itel,” is not serializable as XML 1.0.

Attribute “magnetokineze,” is not serializable as XML 1.0.

Attribute “numerologie,” is not serializable as XML 1.0.

Attribute “okultn�,” is not serializable as XML 1.0.

Attribute “paranorm�ln�,” is not serializable as XML 1.0.

Attribute “parapsychologie,” is not serializable as XML 1.0.

Attribute “patogenn�,” is not serializable as XML 1.0.

Attribute “proutka�,” is not serializable as XML 1.0.

Attribute “psychotronik,” is not serializable as XML 1.0.

Attribute “pyramida,” is not serializable as XML 1.0.

Attribute “reinkarnace,” is not serializable as XML 1.0.

Attribute “senzibil,” is not serializable as XML 1.0.

Attribute “sisyfos,” is not serializable as XML 1.0.

Attribute “skeptik,” is not serializable as XML 1.0.

Attribute “spiritismus,” is not serializable as XML 1.0.

Attribute “tachyon,” is not serializable as XML 1.0.

Attribute “telepatie,” is not serializable as XML 1.0.

Attribute “ufo,” is not serializable as XML 1.0.

Attribute “z�hady” is not serializable as XML 1.0.

Attribute “"” is not serializable as XML 1.0.

The first occurrence of ID “blok002” was here.

The first occurrence of ID “menu” was here.

The first occurrence of ID “blok005” was here.

The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.

The first occurrence of ID “blok003” was here.

The first occurrence of ID “blok004” was here.

The first occurrence of ID “blok006” was here.

Sysifos.cz | Desktop Performance Insights

Last tested: 10/03/2015

Desktop

Desktop Speed

73%

Leverage browser caching

Optimize images

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

Desktop Resource Breakdown

Total Resources	51
Number of Hosts	2
Static Resources	48
CSS Resources	1

Sysifos.cz | Mobile Performance Insights

Last tested: 10/03/2015

Mobile

Mobile Usability

61%

Use legible font sizes

Size tap targets appropriately

Configure the viewport

Size content to viewport

Mobile Speed

65%

Leverage browser caching

Optimize images

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

Mobile Resource Breakdown

Total Resources	51
Number of Hosts	2
Static Resources	48
CSS Resources	1

Sysifos.cz | Common Typographical Errors

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Sysifos.cz Sisyfos - český klub skeptiků

akupunktura,

Sysifos.cz | Key Trends

Sysifos.cz | General Site Information

Sysifos.cz | Safety and Security Details

Sysifos.cz | Server and Hosting Details

Sysifos.cz | Domain Name Information

Sysifos.cz | HTML Validation Report

Sysifos.cz | Desktop Performance Insights

Sysifos.cz | Mobile Performance Insights

Sysifos.cz | Competitors Analysis

Sysifos.cz | Common Typographical Errors