51cto.com 技术成就梦想51CTO-中国知名的数字化人才学习平台和技术社区

51CTO是中国知名的数字化人才学习平台和技术社区,以服务一亿数字化人才职业成长为己任,对中国数千万数字化人才拥有强大的影响力和服务能力。通过技术社区、技术博客和新媒体矩阵等综合产品服务体系,凝聚了2000万+IT技术人员、50万+位技术博主和近千家IT公司的CTO;通过丰富且高质量的IT技术在线教...


51cto.com Overview

/100

Optimization 74/100

51cto.com is a Chinese-based IT technology website that provides a platform for CTOs, IT technology managers, system and network engineers, security engineers, database engineers, network administrators, development engineers, project management personnel, and other IT technology professionals. The website was established to provide the Chinese IT community with a platform to access news, technical documents, BBS, blogs, technology communities, training courses, and talent exchange services.

The website is structured, providing quick and easy navigation through various menus such as Home, technology community, news, training, blog, BBS, job hunting, and several other submenus that are further organized into categories. The website design is clean and user-friendly, with content arranged in a simple and logical manner.

The site is hosted by CNNIC-ALIBABA-CN-NET-AP Hangzhou Alibaba Advertising Co., Ltd, and uses the .COM top-level domain. The SSL certificate is issued by DigiCert, Inc, ensuring safe and secure browsing.

51cto.com is a family-friendly site, with its contents, domains, and activities subjected to the restrictions of the Chinese Government regarding family-friendly content policies.

With 120550 unique users per day, 301375 pageviews, and a site value of 3955140 US dollars, 51cto.com is one of the leading IT technology websites in China. However, the website's PageSpeed Insight scores indicating relatively slow speed of 53 out of 100 and optimization score of 74 out of 100 need optimization to meet up the user's expectations. This suggests the need for continuous optimization to improve user experience and better engagement on the website.

In conclusion, 51cto.com provides a well-structured platform for IT professionals to access news, technical documents, BBS, blogs, technology communities, training courses, and talent exchange services in China. The site's design is clean, user-friendly, family-friendly, and secure, with top-tier hosting and SSL certifications. However, there is still room for optimization improvements to make the site more speed-friendly and boost engagement with users.


51cto.com Rank Summary

Global Rank
2,273
Average Load Time
2.03sec
Links In Count
2,821
Website Value
$4.0 M

51cto.com Website Safety

logo
Overview
Last Updated: 11/22/2024
Overall result - 51cto.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 logo
Norton Connect Safe
Last Updated: 02/01/2024
51cto.com is safe.
Norton ConnectSafe evaluates 51cto.com for any unsafe and insecure content. The results are critical for families with young children.
Google logo
Google Safe Search
Last Updated: 10/10/2016
51cto.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 brwosing logo
Google Safe Browsing
Last Updated: 08/11/2020
51cto.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.
McAfee logo
Site Advisor
Last Updated: 02/22/2021
51cto.com is safe.
McAfee assesses 51cto.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 51cto.com for mature or inappropriate content, only security checks are evaluated.
Web of trust logo
Web of Trust
Last Updated: 01/09/2019
51cto.com child safety is very good.
The WOT calculates reputation of the 51cto.com. This reputation system receives ratings from users and information from third-party sources, assesses the 51cto.com for safety features and confirms, whether 51cto.com is suitable for children.

SSL Information
Domain*.51cto.com
Issuer OrganizationDigiCert Inc
IssuerGeoTrust CN RSA CA G1
AlgorithmRSA-SHA256
Valid form03/08/2024
Expiration04/08/2025
SignedCertificate is not self signed
Additional Domains *.51cto.com
51cto.com

51cto.com Rank History

51cto.com Hosting Information

Server Location

ASN Information

Last Update: 07/07/2024

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

% Information related to 'AS37888 - AS38911'

as-block: AS37888 - AS38911
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: 2009-09-29T06:04:16Z
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 'AS37936 - AS37970'

as-block: AS37936 - AS37970
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: 2008-09-04T06:40:26Z
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 'AS37963'

% Abuse contact for 'AS37963' is 'ipas@cnnic.cn'

aut-num: AS37963
as-name: CNNIC-ALIBABA-CN-NET-AP
descr: Hangzhou Alibaba Advertising Co.,Ltd.
descr: East Software Park, 99 Huaxing Rd.
descr: Hangzhou, China
country: CN
admin-c: ZM678-AP
tech-c: ZM877-AP
tech-c: ZM876-AP
tech-c: ZM875-AP
import: from AS4837
action pref=100;
accept ANY
import: from AS4134
action pref=100;
accept ANY
export: to AS4837
announce AS37963
export: to AS4134
announce AS37963
mnt-routes: MAINT-CNNIC-AP
mnt-by: MAINT-CNNIC-AP
mnt-irt: IRT-CNNIC-CN
last-modified: 2013-07-24T02:44:02Z
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: Shuo Yu
address: 5F, Builing D, the West Lake International Plaza of S&T
address: No.391 Wen'er Road, Hangzhou City
address: Zhejiang, China, 310099
country: CN
phone: +86-0571-85022600
fax-no: +86-0571-85022600
e-mail: shuo.yus@alibaba-inc.com
e-mail: shuo.yus@aliyun-inc.com
nic-hdl: ZM678-AP
mnt-by: MAINT-CNNIC-AP
last-modified: 2011-11-02T03:36:02Z
source: APNIC

person: Guoxin Gao
address: 5F, Builing D, the West Lake International Plaza of S&T
address: No.391 Wen'er Road, Hangzhou City
address: Zhejiang, China, 310099
country: CN
phone: +86-0571-85022600
fax-no: +86-0571-85022600
e-mail: anti-spam@list.alibaba-inc.com
nic-hdl: ZM875-AP
mnt-by: MAINT-CNNIC-AP
last-modified: 2014-07-30T01:56:01Z
source: APNIC

person: security trouble
e-mail: cloud-cc-sqcloud@list.alibaba-inc.com
address: 5th,floor,Building D,the West Lake International Plaza of S&T,391#Wen’er Road
address: Hangzhou, Zhejiang, China
phone: +86-0571-85022600
country: CN
mnt-by: MAINT-CNNIC-AP
nic-hdl: ZM876-AP
last-modified: 2013-07-08T02:56:02Z
source: APNIC

person: Guowei Pan
address: 5F, Builing D, the West Lake International Plaza of S&T
address: No.391 Wen'er Road, Hangzhou City
address: Zhejiang, China, 310099
country: CN
phone: +86-0571-85022088-30763
fax-no: +86-0571-85022600
e-mail: guowei.pangw@alibaba-inc.com
nic-hdl: ZM877-AP
mnt-by: MAINT-CNNIC-AP
last-modified: 2013-07-09T01:34:02Z
source: APNIC

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

51cto.com Domain Registration and Settings

WHOIS

Domain Name: 51CTO.COM
Registry Domain ID: 150614265_DOMAIN_COM-VRSN
Registrar WHOIS Server: grs-whois.hichina.com
Registrar URL: http://www.net.cn
Updated Date: 2023-12-11T07:46:55Z
Creation Date: 2005-04-13T00:38:35Z
Registry Expiry Date: 2025-04-13T00:38:35Z
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
Name Server: VIP1.ALIDNS.COM
Name Server: VIP2.ALIDNS.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2024-09-09T11:22:44Z


DNS Records
HostA RecordTTL
HostMX RecordPriorityTTL
HostNS RecordTTL
HostTXT RecordTTL

51cto.com HTML Check

Warnings

Errors

51cto.com Desktop Performance

Last tested: 05/05/2017

Speedometer image
Desktop Speed
51%

Desktop Resource Breakdown
Total Resources142
Number of Hosts33
Static Resources108
JavaScript Resources43
CSS Resources4

51cto.com Mobile Insights

Last tested: 12/02/2019

Speedometer image
Mobile Usability
89%
Speedometer image
Mobile Speed
53%

Mobile Resource Breakdown
Total Resources31
Number of Hosts12
Static Resources26
JavaScript Resources8
CSS Resources2

51cto.com Common Typos

www.51cto.com
www.51cto.net
www.51cto.org
www.51cto.info
www.51cto.biz
www.51cto.us
www.51cto.mobi
www.1cto.com
www.51cto.com
www.5cto.com
www.51to.com
www.51xto.com
www.51cxto.com
www.51xcto.com
www.51dto.com
www.51cdto.com
www.51dcto.com
www.51fto.com
www.51cfto.com
www.51fcto.com
www.51vto.com
www.51cvto.com
www.51vcto.com
www.51co.com
www.51cro.com
www.51ctro.com
www.51crto.com
www.51cfo.com
www.51ctfo.com
www.51cgo.com
www.51ctgo.com
www.51cgto.com
www.51cyo.com
www.51ctyo.com
www.51cyto.com
www.51ct.com
www.51cti.com
www.51ctoi.com
www.51ctio.com
www.51ctk.com
www.51ctok.com
www.51ctko.com
www.51ctl.com
www.51ctol.com
www.51ctlo.com
www.51ctp.com
www.51ctop.com
www.51ctpo.com
www.51cto.con