Csdn.net CSDN-专业IT技术社区

Csdn.net Overview

Csdn.net ranking shows that the page is at position 27 over the world, while the bulk of its audience is from China, where it ranks 8.

It is beneficial to csdn.net that their hosting company HWCSNET Huawei Cloud Service data center, CN servers are located in China, as that reduces page load time for the majority of their users. See the list of other webpages hosted on HWCSNET Huawei Cloud Service data center, CN servers.

In terms of rank-to-traffic ratio, csdn.net has 6,099,255 unique users per day, viewing 27,324,661 pages. The rank based value of csdn.net is 362,763,075 USD. Every user makes 4.84 pageviews on average.

Csdn.net top-level domain belongs to .NET domain zone. Check other webpages in .NET zone.

According the last verification test in January 11, 2022, csdn.net has an expired wildcard SSL certificate issued by DigiCert Inc (expired on December 02, 2022). 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, Symantec and Web of Trust csdn.net is a fairly safe domain.

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

Csdn.net Rank Summary

Global Rank

Average Load Time

1.56sec

Links In Count

10,648

Website Value

$335.9 M

Audience Geography. Where are csdn.net visitors located?

Country	Visitors
China CN	96.6%
Japan JP	0.7%
United States US	0.7%
Hong Kong HK	0.7%
Other	1.3%

Country	Pageviews
China CN	97.4%
Hong Kong HK	0.7%
United States US	0.6%
Japan JP	0.5%
Other	0.8%

Country	Rank
China CN	8
Hong Kong HK	22
Japan JP	251
United States US	535

Where do visitors go on csdn.net?

Subdomain	Pageviews
blog.csdn.net	87.72%
csdn.net	3.6%
download.csdn.net	2.89%
link.csdn.net	1.59%
so.csdn.net	1.19%
bbs.csdn.net	0.63%
passport.csdn.net	0.46%
ask.csdn.net	0.36%
im.csdn.net	0.36%
mp.csdn.net	0.31%
other	0.9%

Subdomain	Pageviews per User
c.csdn.net	6
blog.csdn.net	4.97
edu.csdn.net	3
mp.csdn.net	2.4
im.csdn.net	2.1
download.csdn.net	1.65
i.csdn.net	1.5
editor.csdn.net	1.3
csdn.net	1.29
ask.csdn.net	1.2
other	0.9

Subdomain	Reach
blog.csdn.net	97.3%
csdn.net	15.41%
download.csdn.net	9.67%
link.csdn.net	8.77%
so.csdn.net	6.49%
bbs.csdn.net	2.98%
passport.csdn.net	2.15%
ask.csdn.net	1.69%
i.csdn.net	1.03%
im.csdn.net	0.91%
other	1.69%

How popular is csdn.net?

Period	Global Rank	Global Rank Delta
past 3 months	27	4
past month	20	-17
past week	18	-1
yesterday	16	1

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	28	1	1742	-7.104%	4.48	3%
30	16	-27	2795	184%	5.51	50.5%
7	15	-2	3490	24%	5.78	6%
1	13	1	3920	-11.02%	5.4	-1.28%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	28	5	13500	-9.649%
30	21	-13	19300	88.4%
7	19	-3	22200	17%
1	16	1	25000	-9.847%

Csdn.net Website Safety

Overview

Last Updated: 06/05/2023

Overall result - csdn.net 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: 06/28/2022

csdn.net is safe.

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

Google Safe Search

Last Updated: 06/05/2023

csdn.net 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: 06/23/2022

csdn.net 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: 06/23/2022

csdn.net is safe.

McAfee assesses csdn.net 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 csdn.net for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 01/09/2019

csdn.net child safety is very good.

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

SSL Information

SSL Checker Tool

Domain	*.csdn.net
Issuer Organization	DigiCert Inc
Issuer	GeoTrust CN RSA CA G1
Algorithm	RSA-SHA256
Valid form	11/03/2021
Expiration	12/02/2022
Signed	Certificate is not self signed
Additional Domains	*.csdn.net csdn.net

Csdn.net Hosting Information

Server Location

Geolocation Tool

ASN Information

ASN Lookup Tool

ASN ID: 55990
ASN Title: HWCSNET Huawei Cloud Service data center, CN

Last Update: 04/25/2023

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

% Information related to 'AS55296 - AS56319'

as-block: AS55296 - AS56319
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: 2009-09-03T01:15:30Z
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 'AS55956 - AS56015'

as-block: AS55956 - AS56015
descr: CNNIC ASN block
country: CN
remarks: These AS numbers are further assigned by CNNIC
remarks: to CNNIC members and end-users in China
admin-c: IPAS1-AP
tech-c: IPAS1-AP
mnt-by: APNIC-HM
mnt-lower: MAINT-CNNIC-AP
last-modified: 2010-12-23T23:34:45Z
source: APNIC

role: CNNIC IPAS CONFEDERATION
address: No.4, Zhongguancun No.4 South Street,
address: Haidian District, Beijing
country: CN
phone: +86-010-58813000
fax-no: +86-010-58813075
e-mail: ipas@cnnic.cn
admin-c: IP50-AP
tech-c: IP50-AP
nic-hdl: IPAS1-AP
mnt-by: MAINT-CNNIC-AP
last-modified: 2013-09-12T07:40:01Z
source: APNIC

% Information related to 'AS55990'

% Abuse contact for 'AS55990' is 'ipas@cnnic.cn'

aut-num: AS55990
as-name: HWCSNET
descr: Huawei Cloud Service data center
country: CN
admin-c: NZ158-AP
tech-c: MH1129-AP
notify: ipas@cnnic.net.cn
mnt-by: MAINT-CNNIC-AP
mnt-irt: IRT-CNNIC-CN
last-modified: 2012-10-09T06:34:01Z
source: APNIC

irt: IRT-CNNIC-CN
address: Beijing, China
e-mail: ipas@cnnic.cn
abuse-mailbox: ipas@cnnic.cn
admin-c: IP50-AP
tech-c: IP50-AP
auth: # Filtered
remarks: Please note that CNNIC is not an ISP and is not
remarks: empowered to investigate complaints of network abuse.
remarks: Please contact the tech-c or admin-c of the network.
mnt-by: MAINT-CNNIC-AP
last-modified: 2017-11-01T08:57:39Z
source: APNIC

person: Mingliang Hao
nic-hdl: MH1129-AP
e-mail: mingliang.hao@huawei.com
address: 10/F, Xinsheng Tower, 5 Financial Street,
address: Xincheng District,Beijing,100140 P.R.China
phone: +86-18618305900
fax-no: +86-10-63762415
country: CN
mnt-by: MAINT-CNNIC-AP
last-modified: 2012-10-09T05:34:02Z
source: APNIC

person: Nina Zhao
nic-hdl: NZ158-AP
e-mail: zhaocaina@huawei.com
address: 10/F, Xinsheng Tower, 5 Financial Street,
address: Xincheng District,Beijing,100140 P.R.China
phone: +86-18601351719
fax-no: +86-10-63762415
country: CN
mnt-by: MAINT-CNNIC-AP
last-modified: 2012-10-09T05:34:02Z
source: APNIC

% This query was served by the APNIC Whois Service version 1.88.15-46 (WHOIS-US3)

Csdn.net Domain Registration and Settings

WHOIS

WHOIS Lookup Tool

Domain Name: CSDN.NET
Registry Domain ID: 4252779_DOMAIN_NET-VRSN
Registrar WHOIS Server: grs-whois.hichina.com
Registrar URL: http://www.net.cn
Updated Date: 2021-12-02T08:57:35Z
Creation Date: 1999-03-11T05:00:00Z
Registry Expiry Date: 2023-03-11T04:00:00Z
Registrar: Alibaba Cloud Computing (Beijing) Co., Ltd.
Registrar IANA ID: 420
Registrar Abuse Contact Email: DomainAbuse@service.aliyun.com
Registrar Abuse Contact Phone: +86.95187
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Name Server: VIP3.ALIDNS.COM
Name Server: VIP4.ALIDNS.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2022-05-14T06:06:20Z

DNS Records

DNS Lookup Tool

Host	A Record	TTL
csdn.net	39.106.226.142	600

Host	MX Record	Priority	TTL
csdn.net	mxbiz2.qq.com	10	600
csdn.net	mxbiz1.qq.com	5	600

Host	NS Record	TTL
csdn.net	vip4.alidns.com	86400
csdn.net	vip3.alidns.com	86400

Host	TXT Record	TTL
csdn.net	google-site-verification=nn4nvxbYITKfb8-tv-QWw4H7PsjTM6LGvHDeUvrw0hA	60
csdn.net	aliyun-site-verification=019d4b53-d811-47df-8312-695fcef366f4	60
csdn.net	v=spf1 include:spf.mail.qq.com ~all	60

vip3.alidns.com
TTL: 600
Email address: hostmaster.hichina.com
Serial: 2018022610
Refresh: 3600
Retry: 1200
Expire: 86400
Minimum: 360

Csdn.net HTML Check

HTML Validation Tool

Warnings

Consider avoiding viewport values that prevent users from resizing documents.

The “type” attribute is unnecessary for JavaScript resources.

The first occurrence of ID “Star-Copy” was here.

The first occurrence of ID “Oval-4” was here.

The first occurrence of ID “Path-53” was here.

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

Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.

Errors

No space between attributes.

Attribute “ref” not allowed on element “link” at this point.

Element “link” is missing one or more of the following attributes: “itemprop”, “property”, “rel”.

Attribute “prod” not allowed on element “script” at this point.

Attribute “skin” not allowed on element “script” at this point.

Attribute “domain” not allowed on element “script” at this point.

Bad value “760px” for attribute “width” on element “iframe”: Expected a digit but saw “p” instead.

Bad value “90px” for attribute “height” on element “iframe”: Expected a digit but saw “p” instead.

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

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

Element “img” is missing required attribute “src”.

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

Bad value “300px” for attribute “width” on element “iframe”: Expected a digit but saw “p” instead.

Stray doctype.

Attribute “shown-offset” not allowed on element “ul” at this point.

Attribute “adsid” not allowed on element “div” at this point.

Bad value “200px” for attribute “height” on element “iframe”: Expected a digit but saw “p” instead.

Bad value “button” for attribute “type” on element “a”: Subtype missing.

Bad value “250px” for attribute “height” on element “iframe”: Expected a digit but saw “p” instead.

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

Attribute “username” not allowed on element “img” at this point.

Duplicate ID “Star-Copy”.

Duplicate ID “Oval-4”.

Duplicate ID “Path-53”.

Stray start tag “script”.

Csdn.net Desktop Performance

Last tested: 06/12/2016

Desktop Speed

46%

Optimize images

Enable compression

Leverage browser caching

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

Minify JavaScript

Prioritize visible content

Minify HTML

Minify CSS

Desktop Resource Breakdown

Total Resources	126
Number of Hosts	18
Static Resources	74
JavaScript Resources	23
CSS Resources	4

Csdn.net Mobile Insights

Last tested: 06/12/2016

Mobile Usability

100%

Mobile Speed

57%

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

Avoid landing page redirects

Leverage browser caching

Enable compression

Optimize images

Mobile Resource Breakdown

Total Resources	17
Number of Hosts	5
Static Resources	12
JavaScript Resources	4
CSS Resources	1

Csdn.net Common Typos

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Csdn.net CSDN-专业IT技术社区

Csdn.net Overview

Csdn.net Rank Summary

Csdn.net Website Safety

Csdn.net Hosting Information

Csdn.net Domain Registration and Settings

Csdn.net HTML Check

Csdn.net Desktop Performance

Csdn.net Mobile Insights

Csdn.net Similar Audits

Csdn.net Common Typos