DOWN.51CTO.COM Website Review
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Basic Information
Page Information
Title:
系统升级中
Meta keywords:
Kotlin教程,csdn,linux安装命令,python基础教程,python爬虫,mysql教程,PHP开发工具,oracle11g,Java编程,jquery ajax，Javascript学习指南,Hadoop开发环境搭建
Meta description:
51CTO下载中心致力于为全球IT专业人士提供完全免费、安全可靠、下载速度最快的技术资料下载服务。提供业界最主流的网络技术、开发技术、数据库技术、信息化资料下载、以及各类程序源码、解决方案、白皮书、电子书等。
H1 Tag:
Unknown
Internal links:
0 (0 nofollow)
External links:
18 (0 nofollow)
Site Technology
Server:
Unknown
SSL Secure:
Unavailable
robots.txt:
Unavailable
XML Sitemap:
Gzip Compress:
Available
favicon.ico:
Unavailable
HTTP Header Analysis
HTTP header fields are components of the message header of requests and responses in the Hypertext Transfer Protocol (HTTP). They define the operating parameters of an HTTP transaction. The header fields are not directly displayed by normal web browsers like Internet Explorer, Google Chrome, Firefox etc. Below is the HTTP Header information of down.51cto.com:
HTTP/1.1 302 Moved Temporarily
Date: Sun, 31 May 2020 18:09:55 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
Set-Cookie: waf_cookie=397e0cdd-53c7-4ba0e639b033c2a98e0d5959ef2acda9c47e; Expires=1590955795; Path=/; HttpOnly
Set-Cookie: acw_tc=276082a515909485954158749e5073901e3704993f90b618abb323b34bed5e;path=/;HttpOnly;Max-Age=1800
Location: https://down.51cto.com/download.php?do=uploadnew
Load-Balancing: web09_down
Load-Balancing: web09_down
X-Request-Id: 927082f7bf50313ada9c8aded7d940b6
Server: WAF/2.4-12.1
HTTP/1.1 200 OK
Date: Sun, 31 May 2020 18:09:57 GMT
Content-Type: text/html; charset=utf-8
Transfer-Encoding: chunked
Connection: keep-alive
Set-Cookie: waf_cookie=923765d8-196d-494e70fd4a59a5de46b831851bace5b5db7e; Expires=1590955796; Path=/; HttpOnly
Set-Cookie: acw_tc=2760829d15909485969578925e0a225be3e89c5be6b00aff83ad21d1c24c5d;path=/;HttpOnly;Max-Age=1800
Vary: Accept-Encoding
X-Request-ID: 300bad505791566c76a0fc8a1882a50a
Set-Cookie: PHPSESSID=ibs2cr2f1q9l6206vgatl4l757; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Load-Balancing: web10_down
Load-Balancing: web10_down
Content-Encoding: gzip
Server: WAF/2.4-12.1
Date: Sun, 31 May 2020 18:09:55 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
Set-Cookie: waf_cookie=397e0cdd-53c7-4ba0e639b033c2a98e0d5959ef2acda9c47e; Expires=1590955795; Path=/; HttpOnly
Set-Cookie: acw_tc=276082a515909485954158749e5073901e3704993f90b618abb323b34bed5e;path=/;HttpOnly;Max-Age=1800
Location: https://down.51cto.com/download.php?do=uploadnew
Load-Balancing: web09_down
Load-Balancing: web09_down
X-Request-Id: 927082f7bf50313ada9c8aded7d940b6
Server: WAF/2.4-12.1
HTTP/1.1 200 OK
Date: Sun, 31 May 2020 18:09:57 GMT
Content-Type: text/html; charset=utf-8
Transfer-Encoding: chunked
Connection: keep-alive
Set-Cookie: waf_cookie=923765d8-196d-494e70fd4a59a5de46b831851bace5b5db7e; Expires=1590955796; Path=/; HttpOnly
Set-Cookie: acw_tc=2760829d15909485969578925e0a225be3e89c5be6b00aff83ad21d1c24c5d;path=/;HttpOnly;Max-Age=1800
Vary: Accept-Encoding
X-Request-ID: 300bad505791566c76a0fc8a1882a50a
Set-Cookie: PHPSESSID=ibs2cr2f1q9l6206vgatl4l757; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Load-Balancing: web10_down
Load-Balancing: web10_down
Content-Encoding: gzip
Server: WAF/2.4-12.1
DNS Record Analysis
Domain Name Systes (DNS) translates easily memorized domain names to the numerical IP addresses needed for the purpose of locating computer services and devices worldwide. There are total 6 DNS record(s) of 51cto.com.
| Host | Type | IP/Target | TTL | Extra Infomation |
|---|---|---|---|---|
| 51cto.com | A | 463 | ||
| 51cto.com | MX | 463 | pri: 10 | |
| 51cto.com | MX | 463 | pri: 5 | |
| 51cto.com | NS | 86263 | ||
| 51cto.com | NS | 86263 | ||
| 51cto.com | SOA | 465 | expire: 1209600 serial: 1472193368 |