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...

Online Status
Online

Server IP address resolved: Yes
Http response code: 200
Response time: 4.69 sec.
Last Checked: 01/14/2023

Over the time 51cto.com has been ranked as high as 4,915 in the world, while most of its traffic comes from China, where it reached as high as 640 position.

51cto.com receives about 120,550 unique visitors and 301,375 pageviews per day. The estimated value of 51cto.com is 3,955,140 USD. Each unique visitor makes about 2.5 pageviews on average.

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

At the time of the last check (November 28, 2019) 51cto.com has an expired SSL certificate issued by DigiCert Inc (expired on February 19, 2020). Check other websites using SSL certificates issued by DigiCert Inc.

According to Google Safe Browsing, Google Safe Search, Symantec and Web of Trust 51cto.com is quite a safe domain.

Mobile-Friendly test indicates that 51cto.com is well optimized for mobile and tablet devices, however website page loading time could be improved.


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

Overview
Last Updated: 04/26/2024
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
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 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
Malware not found at "51cto.com".
"51cto.com" is not a phishing page.
"51cto.com" does not install unwanted software.
"51cto.com" does not contain harmfull applications.
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 isvery 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 www.cioage.com
Issuer OrganizationDigiCert Inc
Issuer Encryption Everywhere DV TLS CA - G1
Algorithm RSA-SHA256
Valid form 02/19/2019
Expiration 02/19/2020
SignedCertificate is not self signed
Additional Domains www.cioage.com
cioage.com
Server Location

Not Found

ASN Information

Last Update: 09/25/2023

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

% Information related to 'AS37888 - AS38911'

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source: APNIC

% Information related to 'AS37936 - AS37970'

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% 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.
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irt: IRT-CNNIC-CN
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admin-c: IP50-AP
tech-c: IP50-AP
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remarks: Please note that CNNIC is not an ISP and is not
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remarks: Please contact the tech-c or admin-c of the network.
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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
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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
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person: security trouble
e-mail: cloud-cc-sqcloud@list.alibaba-inc.com
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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
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nic-hdl: ZM877-AP
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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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