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21js.com Quick Summary

Status

Online

Server IP address resolved: Yes

Http response code: 200

Response time: 0.63 sec.

Last Checked: 05/13/2024

21js.com traffic estimate is about 477 unique visitors and 477 pageviews per day. The approximated value of 21js.com is 2,920 USD. Every unique visitor makes about 1 pageviews on average.

Alexa Traffic Rank estimates that 21js.com is ranked number 45,234 in the world.

21js.com server is located in China, 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 CHINA169-BACKBONE CHINA UNICOM China169 Backbone, CN.

21js.com is registered under .COM top-level domain. Check other websites in .COM zone.

During the last check (May 13, 2024) 21js.com has an invalid SSL certificate. please click the “Refresh” button for SSL Information at the Safety Information section.

In accordance with Google Safe Browsing, Google Safe Search, Symantec and Web of Trust 21js.com is pretty a safe domain.

Relying on Google Mobile-Friendly test 21js.com isn't optimized for mobile and tablet devices. Designing your websites to be mobile friendly ensures that your pages perform well on all devices, also website page loading time may be improved.

21js.com General Information

21js.com Audience Geography

Where are website visitors coming from?

Visitors
Pageviews
Ranks

Country	Visitors

21js.com Traffic Distribution

Where do visitors go on 21js.com?

Subdomain Traffic
Views per User
Subdomain Reach

Subdomain	Pageviews

21js.com Popularity

How popular is 21js.com?

Global Rank
Pageviews
Reach

Period	Global Rank	Global Rank Delta
past 3 months	1447645	118947
past month	782875	-1062645

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	1979417	448072	1	-30.84%	1	-32.84%
30	1063943	-1591518	2	300%	2	50%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	1285651	-26980	3	4%
30	707129	-824245	6	200%

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21js.com Safety Information

Rankchart Summary

Safe

Updated: 05/13/2024

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: 03/18/2024

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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

Safe

Updated: 10/24/2016

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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: 02/23/2021

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McAfee assesses 21js.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 21js.com for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Child safety is very good

Updated: 01/10/2019

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The WOT calculates reputation of the 21js.com. This reputation system receives ratings from users and information from third-party sources, assesses the 21js.com for safety features and confirms, whether 21js.com is suitable for children.

21js.com SSL Information

Information about SSL/TLS certificates

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WARNING!	Certificate download error. Previous scan results are shown below.
Domain	Unknown
Issuer Organization	Unknown
Issuer	Unknown
Algorithm	Unknown
Valid form	Unknown
Expiration	Unknown
Signed	No information
Additional Domains

SSL Checker

21js.com Server Information

21js.com Server Location

Where website hosting server is located?

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21js.com ASN Information

Information about IP address owner

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ASN ID: 4837

ASN Title: CHINA169-BACKBONE CHINA UNICOM China169 Backbone, CN

Updated: 10/04/2023

Raw ASN data:

% [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS4608 - AS4864'

as-block: AS4608 - AS4864
descr: APNIC ASN block
remarks: These AS numbers are further assigned by APNIC
remarks: to APNIC members and end-users in the APNIC region
admin-c: HM20-AP
tech-c: HM20-AP
mnt-by: APNIC-HM
mnt-lower: APNIC-HM
last-modified: 2008-09-04T06:40:26Z
source: APNIC

role: APNIC Hostmaster
address: 6 Cordelia Street
address: South Brisbane
address: QLD 4101
country: AU
phone: +61 7 3858 3100
fax-no: +61 7 3858 3199
e-mail: helpdesk@apnic.net
admin-c: AMS11-AP
tech-c: AH256-AP
nic-hdl: HM20-AP
remarks: Administrator for APNIC
notify: hostmaster@apnic.net
mnt-by: MAINT-APNIC-AP
last-modified: 2013-10-23T04:06:51Z
source: APNIC

% Information related to 'AS4837'

% Abuse contact for 'AS4837' is 'hqs-ipabuse@chinaunicom.cn'

aut-num: AS4837
as-name: CHINA169-Backbone
descr: CHINA UNICOM China169 Backbone
country: CN
member-of: AS4837:AS-CNCGROUP
import: from AS701
action pref=100;
accept ANY
import: from AS1239
action pref=100;
accept ANY
import: from AS4808
action pref=100;
accept AS4808
import: from AS4814
action pref=100;
accept AS4814
import: from AS17816
action pref=100;
accept AS17816
export: to AS701
announce AS4837
export: to AS1239
announce AS4837
export: to AS4808
announce AS4837
export: to AS4814
announce AS4837
export: to AS17816
announce AS4837
admin-c: CH444-AP
tech-c: CH444-AP
mnt-routes: MAINT-CNCGROUP-RR
mnt-by: MAINT-CNCGROUP-RR
mnt-irt: IRT-CU-CN
last-modified: 2017-08-28T02:14:10Z
source: APNIC

irt: IRT-CU-CN
address: No.21,Financial Street
address: Beijing,100033
address: P.R.China
e-mail: hqs-ipabuse@chinaunicom.cn
abuse-mailbox: hqs-ipabuse@chinaunicom.cn
admin-c: CH1302-AP
tech-c: CH1302-AP
auth: # Filtered
mnt-by: MAINT-CNCGROUP
last-modified: 2017-10-23T05:59:13Z
source: APNIC

person: CNCGroup Hostmaster
nic-hdl: CH444-AP
e-mail: hqs-ipabuse@chinaunicom.cn
address: No.21,Financial Street
address: Beijing,100033,P.R.China
phone: +86-10-66259764
fax-no: +86-10-66259764
country: CN
mnt-by: MAINT-CN-CUCGROUP
last-modified: 2017-09-05T06:36:14Z
source: APNIC

% This query was served by the APNIC Whois Service version 1.88.15-46 (WHOIS-US4)

Geolocation

ASN Lookup

21js.com Domain Name Information

21js.com DNS Information

Domain name service records

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A

Host	A Record	TTL

21js.com Whois Information

Information about registered users or assignees of an Internet resource

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Raw WHOIS data:

Whois

DNS Lookup

21js.com HTML Validation

21js.com W3C HTML Markup Validation

HTML markup errors and warnings

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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”.

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

Stray end tag “font”.

Element “dl” is missing a required child element.

No space between attributes.

Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.

Attribute “etc"开启预约"” not allowed on element “a” at this point.

The element “h3” must not appear as a descendant of the “dt” element.

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

End tag “a” violates nesting rules.

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

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

Unclosed element “font”.

Start tag “a” seen but an element of the same type was already open.

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

Unclosed element “a”.

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

Cannot recover after last error. Any further errors will be ignored.

Warnings:

The “language” attribute on the “script” element is obsolete. You can safely omit it.

Attribute “etc"开启预约"” is not serializable as XML 1.0.

HTML Validator

21js.com Desktop Performance

How Well 21js.com Performs On Desktops?

Website desktop performance and usability tips

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Speed
Resource Breakdown

Speed

32%

Optimize images

Leverage browser caching

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

Enable compression

Minify HTML

Minify CSS

Updated: 06/03/2017

21js.com Mobile Performance

How Optimized Is 21js.com for Mobile Devices?

Tips on speeding up mobile site performance

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Usability
Speed
Resource Breakdown

Usability

59%

Use legible font sizes

Size tap targets appropriately

Configure the viewport

Size content to viewport

Updated: 05/31/2017

21js.com Nearest Competitors

Estimated Nearest Competitors Of 21js.com

заповедная-долина.рф
ithethao.vn
easy.com.ar
concreteinstitute.com.au
sbac.org.br
homify.ca
boimc.com.cn
hebeidaily.com.cn
cecolombobritanico.edu.co
milkmoney.co
21js.com
adhdmarriage.com
azurearestaurant.com
bilenky.com
bolindadigital.com
briannas.com
brndconsulting.com
byalicelee.com
chiapow.com
construct-ed.com
grubbrr.com
hdpiano.com

21js.com URL Typos

Most common user URL mistypes for 21js.com

www.21js.com
www.21js.net
www.21js.org
www.21js.info
www.21js.biz
www.21js.us
www.21js.mobi
www.1js.com
www.21js.com
www.2js.com
www.21s.com
www.21ns.com
www.21jns.com
www.21njs.com
www.21hs.com
www.21jhs.com
www.21hjs.com
www.21us.com
www.21jus.com
www.21ujs.com
www.21is.com
www.21jis.com
www.21ijs.com
www.21ks.com
www.21jks.com
www.21kjs.com
www.21ms.com
www.21jms.com
www.21mjs.com
www.21j.com
www.21jw.com
www.21jsw.com
www.21jws.com
www.21je.com
www.21jse.com
www.21jes.com
www.21jd.com
www.21jsd.com
www.21jds.com
www.21jz.com
www.21jsz.com
www.21jzs.com
www.21jx.com
www.21jsx.com
www.21jxs.com
www.21ja.com
www.21jsa.com
www.21jas.com
www.21js.con

Total Resources	153
Number of Hosts	17
Static Resources	129
JavaScript Resources	25
CSS Resources	4

CSS	73.9 KBytes
Images	2.5 MBytes
HTML	89.2 KBytes
JavaScript	166.1 KBytes
Other	437.0 Bytes

Total Resources	148
Number of Hosts	16
Static Resources	125
JavaScript Resources	24
CSS Resources	3

CSS	72.1 KBytes
Images	2.3 MBytes
HTML	88.6 KBytes
JavaScript	154.4 KBytes
Other	437.0 Bytes