51cto.com 51CTO.COM - 技术成就梦想 - 中国领先的IT技术网站

中国领先的IT技术网站51CTO(www.51cto.com)是一个为CTO、IT技术经理、系统工程师、网络工程师、安全工程师、数据库工程师、网络管理员、开发工程师、项目管理人员等IT技术人员搭建的互动媒体平台,主要为IT技术人员提供新闻资讯、技术文档、BBS、博客、技术圈、培训课程、人才交流等专业...


Online Status
Offline

Server IP address resolved: No
Http response code: None
Last Checked: 08/03/2021

51cto.com traffic volume is 128,989 unique daily visitors and their 322,471 pageviews. The web value rate of 51cto.com is 4,232,000 USD. Each visitor makes around 2.68 page views on average.

By Alexa's traffic estimates 51cto.com placed at 430 position over the world, while the largest amount of its visitors comes from China, where it takes 640 place.

51cto.com registered under .COM top-level domain. Check other websites in .COM zone.

The last verification results, performed on (November 28, 2019) 51cto.com show that 51cto.com has an expired SSL certificate issued by DigiCert Inc (expired on February 19, 2020). Click “Refresh” button for SSL Information at the Safety Information section. Check the list of websites using SSL certificates issued by DigiCert Inc.

In accordance with Google Safe Browsing, Google Safe Search, Symantec and Web of Trust 51cto.com is pretty a safe domain.

Relying Google MobileFriendly test 51cto.com is well optimized for mobile and tablet devices, however web page loading speed may be improved.


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

Overview
Last Updated: 08/03/2021
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
Last Updated: 08/05/2020
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 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 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.
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
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
Domainwww.cioage.com
Issuer OrganizationDigiCert Inc
IssuerEncryption Everywhere DV TLS CA - G1
AlgorithmRSA-SHA256
Valid form02/19/2019
Expiration02/19/2020
SignedCertificate is not self signed
Additional Domains www.cioage.com
cioage.com
Server Location

ASN Information

ASN ID: 37963
ASN Title: CNNIC-ALIBABA-CN-NET-AP Hangzhou Alibaba Advertising Co.,Ltd., CN

Last Update: 06/03/2021

% [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
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tech-c: HM20-AP
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source: APNIC

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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
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tech-c: IPAS1-AP
mnt-by: APNIC-HM
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source: APNIC

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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
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action pref=100;
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announce AS37963
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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
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nic-hdl: ZM678-AP
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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
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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)

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: 2020-12-11T03:09:42Z
Creation Date: 2005-04-13T00:38:35Z
Registry Expiry Date: 2024-04-13T00:38:35Z
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
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
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: 2021-04-24T20:36:09Z


DNS Records
HostA RecordTTL
HostMX RecordPriorityTTL
HostNS RecordTTL
HostTXT RecordTTL
Warnings

Errors

Last tested: 05/05/2017

Desktop
Desktop Speed
51%

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

Last tested: 12/02/2019

Mobile
Mobile Usability
89%
Mobile Speed
53%

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