收集的全国DNS

114.114.114.114[江苏省南京市 信风网络科技有限公司公众DNS服务器]
120.198.232.139[中国 移动]
120.198.232.159[中国 移动]
120.198.232.69[中国 移动]
121.194.2.2[北京市 CERNET数据中心VIP通道项目]
123.129.209.28[山东省济南市 联通]
124.161.87.155[四川省南充市 联通]
125.39.191.252[天津市 联通]
165.87.201.244[美国]
168.95.192.1[台湾省台北市 中华电信DNS服务器]
202.101.172.35[浙江省杭州市 电信]
202.101.224.68[江西省 电信DNS服务器]
202.101.224.69[江西省 电信DNS服务器]
202.101.226.68[江西省九江市 电信DNS服务器]
202.102.134.68[山东省青岛市 联通DNS服务器]
202.102.134.69[山东省青岛市 联通DNS服务器]
202.102.152.3[山东省济南市 联通DNS服务器]
202.102.154.3[山东省 联通DNS服务器]
202.102.224.68[河南省 联通DNS服务器]
202.102.224.74[河南省郑州市 联通]
202.102.24.35[江苏省南京市 电信DNS服务器]
202.102.3.144[江苏省常州市 电信DNS服务器]
202.102.7.90[江苏省扬州市 电信DNS服务器]
202.103.224.68[广西南宁市 电信DNS服务器]
202.103.24.68[湖北省武汉市 电信DNS服务器]
202.106.0.20[北京市 联通DNS服务器]
202.106.195.68[北京市 联通DNS服务器]
202.106.196.115[北京市 联通DNS服务器]
202.116.128.1[广东省广州市 广东工业大学]
202.120.1.61[上海交通大学 计算中心]
202.120.2.101[上海交通大学 网络中心]
202.138.96.2[印度]
202.181.224.2[香港 互联通有限公司]
202.201.112.5[宁夏银川市 北方民族大学]
202.45.84.58[香港 和记黄埔有限公司DNS服务器]
202.96.104.16[浙江省宁波市 电信DNS服务器]
202.96.113.34[浙江省衢州市 电信]
202.96.128.166[广东省广州市 电信DNS服务器]
202.96.134.133[广东省深圳市 电信DNS服务器]
202.96.69.38[辽宁省大连市 联通DNS服务器]
202.96.75.68[辽宁省沈阳市 联通DNS服务器]
202.97.224.68[黑龙江省 联通DNS服务器]
202.97.224.69[黑龙江省 联通DNS服务器]
202.98.5.68[吉林省长春市 联通DNS服务器]
202.98.96.68[四川省成都市 电信DNS服务器]
202.99.166.4[河北省 联通DNS服务器]
202.99.168.8[河北省保定市 联通DNS服务器]
202.99.192.68[山西省运城市 联通DNS服务器]
203.196.0.6[北京市 世纪互联宽带数据中心有限公司IDC机房]
208.67.222.222[美国 加利福尼亚州旧金山市OpenDNS有限责任公司]
210.21.196.6[广东省深圳市 联通DNS服务器]
210.22.70.3[上海市 联通]
210.37.80.1[海南省海口市 海口经济学院]
210.43.128.1[河南省郑州市 华北水利水电学院]
211.136.192.6[广东省广州市 广东移动广州市分公司]
211.137.160.5[天津市 移动DNS服务器]
211.137.241.35[黑龙江省哈尔滨市 移动DNS服务器]
211.137.76.67[湖北省武汉市 武钢工程技术集团通信有限责任公司]
211.138.164.6[海南省海口市 移动DNS服务器]
211.139.136.68[广东省 移动(全省通用)]
211.139.73.34[西藏拉萨市 移动DNS服务器]
211.140.13.188[浙江省杭州市 移动]
211.142.210.98[湖南省长沙市 移动DNS服务器]
211.156.177.71[广东省广州市 广州恒汇网络通信有限公司机房]
211.90.72.65[内蒙古呼和浩特市 联通DNS服务器]
211.90.80.65[山西省太原市 联通DNS服务器]
211.91.88.129[安徽省合肥市 联通DNS服务器]
211.97.96.65[海南省海口市 联通DNS服务器]
211.98.2.4[广东省广州市 铁通DNS服务器]
211.98.4.1[广东省广州市 铁通DNS服务器]
218.104.32.106[江苏省苏州市 联通DNS服务器]
218.192.12.6[广东省广州市 广东金融学院]
218.192.240.2[广东省深圳市 教育和科研网主干网]
218.2.135.1[江苏省南京市 电信DNS服务器]
218.75.123.173[浙江省杭州市 杭州电子科技大学]
218.85.157.99[福建省福州市 电信DNS服务器]
219.141.140.10[北京市 电信DNS服务器]
219.149.52.3[辽宁省辽阳市 有线宽带]
219.150.32.132[天津市 电信DNS服务器]
220.248.192.13[江西省南昌市 联通]
221.11.132.2[海南省海口市 联通DNS服务器]
221.11.141.9[海南省三亚市 /儋州市联通]
221.12.1.227[浙江省 联通DNS服务器(全省通用)]
221.130.252.200[浙江省 移动DNS服务器]
221.130.56.242[江苏省无锡市 移动]
221.131.143.69[江苏省南京市 移动DNS服务器]
221.13.28.234[贵州省贵阳市 联通]
221.13.65.38[西藏 联通]
221.6.4.66[江苏省南京市 联通DNS服务器]
221.7.136.14[广西柳州市 联通]
221.7.34.10[甘肃省兰州市 联通DNS服务器]
222.172.200.68[云南省 电信DNS服务器]
58.241.84.5[江苏省常州市 联通]
58.242.249.37[安徽省合肥市 联通]
58.60.188.178[广东省深圳市罗湖区 电信]
60.191.244.5[浙江省金华市 电信DNS服务器]
61.10.0.130[香港 CableTVDNS服务器]
61.128.128.68[重庆市 电信DNS服务器]
61.134.1.4[陕西省西安市 电信DNS]
61.136.59.252[天津市 联通]
61.136.62.65[天津市 联通]
61.139.2.69[四川省成都市 电信DNS服务器]
61.153.177.200[浙江省温州市 电信]
61.177.7.1[江苏省苏州市 电信DNS服务器]
61.234.254.5[湖南省 铁通DNS服务器]
70.84.161.11[美国 德克萨斯州达拉斯ThePlanet互联网服务公司]
8.8.8.8[美国 加利福尼亚州山景市谷歌公司DNS服务器]

Best Practices for Speeding Up Your Web Site(加快您的Web站点的最佳做法)

Best Practices for Speeding Up Your Web Site
原载:http://developer.yahoo.com/performance/rules.html
The Exceptional Performance team has identified a number of best practices for making web pages fast. The list includes 35 best practices divided into 7 categories.

涵盖7类35种方式

Filter by category:

Content
Server
Cookie
CSS
JavaScript
Images
Mobile
All

Minimize HTTP Requests—尽量减少HTTP请求

tag: content

80% of the end-user response time is spent on the front-end. Most of this time is tied up in downloading all the components in the page: images, stylesheets, scripts, Flash, etc. Reducing the number of components in turn reduces the number of HTTP requests required to render the page. This is the key to faster pages.

One way to reduce the number of components in the page is to simplify the page’s design. But is there a way to build pages with richer content while also achieving fast response times? Here are some techniques for reducing the number of HTTP requests, while still supporting rich page designs.

Combined files are a way to reduce the number of HTTP requests by combining all scripts into a single script, and similarly combining all CSS into a single stylesheet. Combining files is more challenging when the scripts and stylesheets vary from page to page, but making this part of your release process improves response times.

CSS Sprites are the preferred method for reducing the number of image requests. Combine your background images into a single image and use the CSS background-image and background-position properties to display the desired image segment.

Image maps combine multiple images into a single image. The overall size is about the same, but reducing the number of HTTP requests speeds up the page. Image maps only work if the images are contiguous in the page, such as a navigation bar. Defining the coordinates of image maps can be tedious and error prone. Using image maps for navigation is not accessible too, so it’s not recommended.

Inline images use the data: URL scheme to embed the image data in the actual page. This can increase the size of your HTML document. Combining inline images into your (cached) stylesheets is a way to reduce HTTP requests and avoid increasing the size of your pages. Inline images are not yet supported across all major browsers.

Reducing the number of HTTP requests in your page is the place to start. This is the most important guideline for improving performance for first time visitors. As described in Tenni Theurer’s blog post Browser Cache Usage – Exposed!, 40-60% of daily visitors to your site come in with an empty cache. Making your page fast for these first time visitors is key to a better user experience.

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