Cerva.com Choose your country | CERVA

Chráníme vaše zdraví již od roku 1991

Cerva.com Overview

Cerva.com ranking shows that the page is at position 712,110 over the world, while the bulk of its audience is from Turkey, where it ranks 33,904.

Cerva.com hosted on RADIOKOMUNIKACE a.s servers in Germany. To reduce page loading time for the majority of cerva.com users, we recommend migrating the server to Turkey, as it will speed up cerva.com page load time for the majority of users. See the list of other webpages hosted on RADIOKOMUNIKACE a.s servers.

In terms of rank-to-traffic ratio, cerva.com has 211 unique users per day, viewing 970 pages. The rank based value of cerva.com is 9,461 USD. Every user makes 4.97 pageviews on average.

Cerva.com boasts a link base consisting of 259 referring domains and 299 external backlinks, as revealed by the data obtained from web network scanning.

Cerva.com top-level domain belongs to .COM domain zone. Check other webpages in .COM zone.

According the last verification test in April 02, 2023, cerva.com has an expired SSL certificate issued by DigiCert Inc (expired on October 01, 2023). Click button “Update” SSL Information at the Safety Information section. Check the list of websites using SSL by DigiCert Inc.

Based on data from Google Safe Browsing, Google Safe Search and Symantec cerva.com is a fairly safe domain.

According the Mobile-Friendly test by Google cerva.com is nice optimized for mobile devices and tablets, however the webpage speed could be improved.

Cerva.com Rank Summary

Global Rank

712,110

Average Load Time

0.98sec

Links In Count

127

Website Value

$8,760

Audience Geography. Where are cerva.com visitors located?

Country	Visitors
Turkey TR	53.7%
Russian Federation RU	3.3%
Ukraine UA	2.4%
Other	40.7%

Country	Pageviews
Turkey TR	64.8%
Ukraine UA	4%
Russian Federation RU	3.6%
Other	27%

Country	Rank
Turkey TR	33904
Ukraine UA	198318
Russian Federation RU	609144

Where do visitors go on cerva.com?

Subdomain	Pageviews
cerva.com	98%
other	2%

Subdomain	Pageviews per User
cerva.com	4

Subdomain	Reach
cerva.com	100%

How popular is cerva.com?

Period	Global Rank	Global Rank Delta
past 3 months	712110	84698
past month	1010118	310743
past week	1027214	14176
yesterday	567456	-791336

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	554162	128754	6	-29.08%	4.6	-21.96%
30	828738	248124	3	-42.06%	4	-1.94%
7	655475	-154401	5	40%	6	60%
1	449135	-216772	8	80%	4	-68.329%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	838965	61945	47	-9.048%
30	1185645	367968	3	-41.15%
7	1364393	145404	3	-10.66%
1	669097	-851433	9	500%

Cerva.com Website Safety

Overview

Last Updated: 12/25/2024

Overall result - cerva.com is safe.

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: 03/31/2024

cerva.com is safe.

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

Google Safe Search

Last Updated: 12/21/2016

cerva.com is safe.

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

cerva.com 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: 03/01/2021

cerva.com is safe.

McAfee assesses cerva.com 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 cerva.com for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 12/25/2024

cerva.com child safety is unknown.

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

SSL Information

SSL Checker Tool

Domain	cerva.com
Issuer Organization	DigiCert Inc
Issuer	GeoTrust EV RSA CA 2018
Algorithm	RSA-SHA256
Valid form	08/31/2022
Expiration	10/01/2023
Signed	Certificate is not self signed
Additional Domains	cerva.com b2b.cerva.com www.cerva.com

Cerva.com Rank History

Alexa Rank shows how popular cerva.com is in comparison with other sites. The most popular site has Alexa Rank equals 1. If cerva.com has Alexa Rank equals 100,000, then it is in TOP 100,000 popular sites in the world. The rank is calculated using a combination of average daily visitors to cerva.com and pageviews on cerva.com over the past 3 months.

Cerva.com Hosting Information

Server Location

Geolocation Tool

ASN Information

ASN Lookup Tool

ASN ID: 25248

ASN Title: RADIOKOMUNIKACE a.s.

Last Update: 07/31/2024

% 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 'AS25164 - AS25249'

as-block: AS25164 - AS25249
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: 2010-05-11T11:46:07Z
last-modified: 2014-02-24T13:15:17Z
source: RIPE

% Information related to 'AS25248'

% Abuse contact for 'AS25248' is 'abuse@bluetone.cz'

aut-num: AS25248
as-name: BlueTone-AS
descr: The Czech Republic
org: ORG-CRa1-RIPE
import: from AS1299 accept ANY
export: to AS1299 announce AS-BLUETONE-CUST
import: from AS5588 accept ANY
export: to AS5588 announce AS-BLUETONE-CUST
import: from AS8928 accept ANY
export: to AS8928 announce AS-BLUETONE-CUST
import: from AS25192 accept ANY
export: to AS25192 announce AS-BLUETONE-CUST
import: from AS29134 accept ANY
export: to AS29134 announce AS-BLUETONE-CUST
import: from AS20723 accept ANY
export: to AS20723 announce AS-BLUETONE-CUST
import: from AS29321 accept ANY
export: to AS29134 announce AS-BLUETONE-CUST
import: from AS29134 accept ANY
export: to AS29321 announce AS-BLUETONE-CUST
import: from AS29208 accept ANY
export: to AS29208 announce AS-BLUETONE-CUST
import: from AS15685 accept ANY
export: to AS15685 announce AS-BLUETONE-CUST
import: from AS25424 accept ANY
export: to AS25424 announce AS-BLUETONE-CUST
import: from AS29113 accept ANY
export: to AS29113 announce AS-BLUETONE-CUST
import: from AS29086 accept ANY
export: to AS29086 announce AS-BLUETONE-CUST
import: from AS21430 accept ANY
export: to AS21430 announce AS-BLUETONE-CUST
import: from AS5407 accept ANY
export: to AS5407 announce AS-BLUETONE-CUST
import: from AS35592 accept ANY
export: to AS35592 announce AS-BLUETONE-CUST
import: from AS15512 accept ANY
export: to AS15512 announce AS-BLUETONE-CUST
import: from AS42000 accept ANY
export: to AS42000 announce AS-BLUETONE-CUST
import: from AS39817 accept ANY
export: to AS39817 announce AS-BLUETONE-CUST
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export: to AS15935 announce AS-BLUETONE-CUST
import: from AS38949 accept ANY
export: to AS38949 announce AS-BLUETONE-CUST
import: from AS2819 accept ANY
export: to AS2819 announce AS-BLUETONE-CUST
import: from AS34315 accept ANY
export: to AS34315 announce AS-BLUETONE-CUST
import: from AS12570 accept ANY
export: to AS12570 announce AS-BLUETONE-CUST
import: from AS16246 accept ANY
export: to AS16246 announce AS-BLUETONE-CUST
import: from AS2686 accept ANY
export: to AS2686 announce AS-BLUETONE-CUST
import: from AS8251 accept ANY
export: to AS8251 announce AS-BLUETONE-CUST
import: from AS31246 accept ANY
export: to AS31246 announce AS-BLUETONE-CUST
import: from AS39235 accept ANY
export: to AS39235 announce AS-BLUETONE-CUST
import: from AS24971 accept ANY
export: to AS24971 announce AS-BLUETONE-CUST
import: from AS30764 accept ANY
export: to AS30764 announce AS-BLUETONE-CUST
import: from AS16019 accept ANY
export: to AS16019 announce AS-BLUETONE-CUST
import: from AS25512 accept ANY
export: to AS25512 announce AS-BLUETONE-CUST
import: from AS13036 accept ANY
export: to AS13036 announce AS-BLUETONE-CUST
import: from AS28725 accept ANY
export: to AS28725 announce AS-BLUETONE-CUST
import: from AS8928 accept ANY
export: to AS8928 announce AS-BLUETONE-CUST
import: from AS34080 accept ANY
export: to AS34080 announce AS-BLUETONE-CUST
import: from AS35361 accept ANY
export: to AS35361 announce AS-BLUETONE-CUST
import: from AS25036 accept ANY
export: to AS25036 announce AS-BLUETONE-CUST
import: from AS35214 accept ANY
export: to AS35214 announce AS-BLUETONE-CUST
import: from AS33883 accept ANY
export: to AS33883 announce AS-BLUETONE-CUST
import: from AS35236 accept ANY
export: to AS35236 announce AS-BLUETONE-CUST
import: from AS39392 accept ANY
export: to AS39392 announce AS-BLUETONE-CUST
import: from AS29583 accept ANY
export: to AS29583 announce AS-BLUETONE-CUST
import: from AS5610 accept ANY
export: to AS5610 announce AS-BLUETONE-CUST
import: from AS24806 accept ANY
export: to AS24806 announce AS-BLUETONE-CUST
import: from AS8913 accept ANY
export: to AS8913 announce AS-BLUETONE-CUST
import: from AS30134 accept ANY
export: to AS30134 announce AS-BLUETONE-CUST
import: from AS39791 accept ANY
export: to AS39791 announce AS-BLUETONE-CUST
import: from AS2852 accept ANY
export: to AS2852 announce AS-BLUETONE-CUST
import: from AS9080 accept ANY
export: to AS9080 announce AS-BLUETONE-CUST
import: from AS12767 accept ANY
export: to AS12767 announce AS-BLUETONE-CUST
import: from AS25234 accept ANY
export: to AS25234 announce AS-BLUETONE-CUST
import: from AS112 accept ANY
export: to AS112 announce AS-BLUETONE-CUST
import: from AS6881 accept ANY
export: to AS6881 announce AS-BLUETONE-CUST
import: from AS15598 accept AS-IPX
export: to AS15598 announce AS-BLUETONE-CUST
import: from AS39790 accept ANY
export: to AS39790 announce AS-BLUETONE-CUST
import: from AS16265 accept ANY
export: to AS16265 announce AS-BLUETONE-CUST
import: from AS41711 accept ANY
export: to AS41711 announce AS-BLUETONE-CUST
import: from AS42908 accept ANY
export: to AS42908 announce AS-BLUETONE-CUST
import: from AS28972 accept ANY
export: to AS28972 announce AS-BLUETONE-CUST
import: from AS42306 accept ANY
export: to AS42306 announce AS-BLUETONE-CUST
import: from AS28851 accept AS28851
export: to AS28851 announce AS-BLUETONE-CUST
import: from AS43708 accept AS43708
export: to AS43708 announce AS-BLUETONE-CUST
import: from AS43541 accept AS43541
export: to AS43541 announce AS-BLUETONE-CUST
import: from AS38952 accept AS38952
export: to AS38952 announce AS-BLUETONE-CUST
import: from AS47232 accept AS47232
export: to AS47232 announce AS-BLUETONE-CUST
import: from AS47868 accept AS47868
export: to AS47868 announce AS-BLUETONE-CUST
import: from AS16276 accept AS-OVH
export: to AS16276 announce AS-BLUETONE-CUST
import: from AS51025 accept ANY
export: to AS51025 announce AS-BLUETONE-CUST
import: from AS196822 accept AS196822
export: to AS196822 announce ANY
import: from AS44002 accept AS44002
export: to AS44002 announce ANY
import: from AS196845 accept AS196845
export: to AS196845 announce ANY
import: from AS52154 accept AS52154
export: to AS52154 announce ANY
import: from AS197277 accept AS197277
export: to AS197277 announce ANY
import: from AS197046 accept AS-FIXNET
export: to AS197046 announce ANY
import: from AS196762 accept AS196762
export: to AS196762 announce ANY
import: from AS43070 accept AS-JAW AND AS-JAW6
export: to AS43070 announce ANY
import: from AS52130 accept AS52130
export: to AS52130 announce ANY
import: from AS57904 accept AS57904
export: to AS57904 announce ANY
import: from AS25192 accept RS-CZ-NIC
export: to AS25192 announce ANY
import: from AS199600 accept AS199600
export: to AS199600 announce ANY
import: from AS47834 accept AS47834
export: to AS47834 announce ANY
import: from AS197565 accept AS197565
export: to AS197565 announce ANY
import: from AS201934 accept AS201934
export: to AS201934 announce ANY
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export: to AS198991 announce ANY
import: from AS197875 accept AS197875
export: to AS198991 announce ANY
import: from AS44500 accept AS44500
export: to AS44500 announce ANY
import: from AS38938 accept AS-SWW
export: to AS38938 announce ANY
import: from AS48405 accept AS48405
export: to AS48405 announce ANY
import: from AS203299 accept AS203299
export: to AS203299 announce ANY
import: from AS57496 accept AS57496
export: to AS57496 announce ANY
import: from AS43757 accept AS43757
export: to AS43757 announce ANY
import: from AS206344 accept AS206344
export: to AS206344 announce ANY
import: from AS11521 accept AS11521
export: to AS11521 announce ANY
import: from AS206438 accept AS206438
export: to AS206438 announce ANY
import: from AS204405 accept AS204405
export: to AS204405 announce ANY
import: from AS39790 accept AS39790
export: to AS39790 announce ANY
import: from AS204351 accept AS204351
export: to AS204351 announce ANY
import: from AS201931 accept AS201931
export: to AS201931 announce ANY
admin-c: CRA37-RIPE
tech-c: CRA37-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: BlueTone-MNT
mnt-lower: BlueTone-MNT
mnt-routes: BlueTone-MNT
mnt-routes: AS13036-MNT
created: 2002-09-20T09:38:10Z
last-modified: 2018-07-18T12:46:51Z
source: RIPE

organisation: ORG-CRa1-RIPE
org-name: RADIOKOMUNIKACE a.s.
org-type: LIR
address: Skokanska 2117 / 1
address: 169 00
address: Praha 6 - Brevnov
address: CZECH REPUBLIC
phone: +420242411534
fax-no: +420242411676
admin-c: RS2825-RIPE
admin-c: VK1570-RIPE
mnt-ref: BlueTone-MNT
mnt-ref: RIPE-NCC-HM-MNT
mnt-by: RIPE-NCC-HM-MNT
mnt-by: BlueTone-MNT
abuse-c: CRA37-RIPE
created: 2004-04-17T11:04:14Z
last-modified: 2017-02-16T10:20:23Z
source: RIPE # Filtered

role: CRA Hostmasters
address: Ceske Radiokomunikace a.s.
address: Skokanska 1
address: 169 00 Praha 6
address: Czech Republic
phone: +420 242 411 534
fax-no: +420 242 411 676
remarks: trouble: +-----------------------------------------+
remarks: trouble: | Operational issues: ripe@bluetone.cz |
remarks: trouble: | Abuse and SPAM: abuse@bluetone.cz |
remarks: trouble: +-----------------------------------------+
admin-c: RS2825-RIPE
tech-c: RS2825-RIPE
tech-c: VK1570-RIPE
tech-c: MK7771-RIPE
nic-hdl: CRA37-RIPE
mnt-by: BLUETONE-MNT
created: 2004-11-05T10:03:39Z
last-modified: 2012-11-09T13:14:18Z
source: RIPE # Filtered
abuse-mailbox: abuse@bluetone.cz

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

Cerva.com Domain Registration and Settings

WHOIS

WHOIS Lookup Tool

Domain Name: CERVA.COM
Registry Domain ID: 90428233_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.ascio.com
Registrar URL: http://www.ascio.com
Updated Date: 2024-08-21T23:57:51Z
Creation Date: 2002-09-19T15:02:02Z
Registry Expiry Date: 2025-09-19T15:02:59Z
Registrar: Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USA
Registrar IANA ID: 106
Registrar Abuse Contact Email: abuse@ascio.com
Registrar Abuse Contact Phone: +1.4165350123
Domain Status: ok https://icann.org/epp#ok
Name Server: ALFA.NS.ACTIVE24.CZ
Name Server: BETA.NS.ACTIVE24.CZ
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2024-10-18T19:58:18Z

DNS Records

DNS Lookup Tool

Host	A Record	TTL
cerva.com	139.59.155.232	3600

Host	MX Record	Priority	TTL
cerva.com	cerva-com.mail.protection.outlook.com	0	3600

Host	NS Record	TTL
cerva.com	alfa.ns.active24.cz	3600
cerva.com	beta.ns.active24.cz	3600

Host	TXT Record	TTL
cerva.com	MS=ms95678026	3600
cerva.com	facebook-domain-verification=8awf73yybdatulktmpky2ebt8dzpru	3600
cerva.com	v=spf1 include:spf.protection.outlook.com a:icemail.cerva.cz ip4:62.209.222.73 ip4:212.158.128.5 ip4:82.99.161.10 include:_spf.afasonline.nl a:zaloha-mail.bluetone.cz a:tmpm.bluetone.cz include:servers.mcsv.net -all	3600

alfa.ns.active24.cz
TTL: 3600
Email address: hostmaster.active24.cz
Serial: 2019022801
Refresh: 10800
Retry: 1800
Expire: 1209600
Minimum: 3600

Cerva.com HTML Check

HTML Validation Tool

Errors

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

No space between attributes.

Duplicate ID “index_map_more_btn”.

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

The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.

The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.

The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.

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

Warnings

Consider avoiding viewport values that prevent users from resizing documents.

The first occurrence of ID “index_map_more_btn” was here.

Cerva.com Desktop Performance

Last tested: 06/17/2019

Desktop Speed

34%

Optimize images

Leverage browser caching

Enable compression

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

Avoid landing page redirects

Minify JavaScript

Minify CSS

Minify HTML

Desktop Resource Breakdown

Total Resources	169
Number of Hosts	16
Static Resources	140
JavaScript Resources	35
CSS Resources	12

Cerva.com Mobile Insights

Last tested: 12/30/2018

Mobile Usability

95%

Size tap targets appropriately

Mobile Speed

22%

Optimize images

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

Leverage browser caching

Avoid landing page redirects

Enable compression

Minify JavaScript

Minify CSS

Minify HTML

Mobile Resource Breakdown

Total Resources	214
Number of Hosts	15
Static Resources	187
JavaScript Resources	64
CSS Resources	21

Cerva.com Common Typos

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www.cerva.net
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www.certva.com
www.cetrva.com
www.cera.com
www.cerca.com
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www.cerva.con

Cerva.com Choose your country | CERVA

Chráníme vaše zdraví již od roku 1991

Cerva.com Overview

Cerva.com Rank Summary

Cerva.com Website Safety

Cerva.com Rank History

Cerva.com Hosting Information

Cerva.com Domain Registration and Settings

Cerva.com HTML Check

Cerva.com Desktop Performance

Cerva.com Mobile Insights

Cerva.com Similar Audits

Cerva.com Common Typos