{
  "title":"Resource Hints: dns-prefetch",
  "description":"Gives a hint to the browser to perform a DNS lookup in the background to improve performance. This is indicated using `<link rel=\"dns-prefetch\" href=\"http://example-domain.com/\">`",
  "spec":"http://www.w3.org/TR/resource-hints/#dns-prefetch",
  "status":"wd",
  "links":[
    {
      "url":"https://msdn.microsoft.com/en-us/library/dn265039(v=vs.85).aspx",
      "title":"Prerender and prefetch support"
    },
    {
      "url":"https://developer.mozilla.org/en-US/docs/Web/HTTP/Controlling_DNS_prefetching",
      "title":"Controlling DNS prefetching"
    }
  ],
  "bugs":[
    
  ],
  "categories":[
    "DOM"
  ],
  "stats":{
    "ie":{
      "5.5":"n",
      "6":"n",
      "7":"n",
      "8":"n",
      "9":"a #1",
      "10":"y",
      "11":"y"
    },
    "edge":{
      "12":"y",
      "13":"y",
      "14":"y"
    },
    "firefox":{
      "2":"n",
      "3":"n",
      "3.5":"y",
      "3.6":"y",
      "4":"y",
      "5":"y",
      "6":"y",
      "7":"y",
      "8":"y",
      "9":"y",
      "10":"y",
      "11":"y",
      "12":"y",
      "13":"y",
      "14":"y",
      "15":"y",
      "16":"y",
      "17":"y",
      "18":"y",
      "19":"y",
      "20":"y",
      "21":"y",
      "22":"y",
      "23":"y",
      "24":"y",
      "25":"y",
      "26":"y",
      "27":"y",
      "28":"y",
      "29":"y",
      "30":"y",
      "31":"y",
      "32":"y",
      "33":"y",
      "34":"y",
      "35":"y",
      "36":"y",
      "37":"y",
      "38":"y",
      "39":"y",
      "40":"y",
      "41":"y",
      "42":"y",
      "43":"y",
      "44":"y",
      "45":"y",
      "46":"y",
      "47":"y",
      "48":"y",
      "49":"y",
      "50":"y",
      "51":"y",
      "52":"y",
      "53":"y"
    },
    "chrome":{
      "4":"y",
      "5":"y",
      "6":"y",
      "7":"y",
      "8":"y",
      "9":"y",
      "10":"y",
      "11":"y",
      "12":"y",
      "13":"y",
      "14":"y",
      "15":"y",
      "16":"y",
      "17":"y",
      "18":"y",
      "19":"y",
      "20":"y",
      "21":"y",
      "22":"y",
      "23":"y",
      "24":"y",
      "25":"y",
      "26":"y",
      "27":"y",
      "28":"y",
      "29":"y",
      "30":"y",
      "31":"y",
      "32":"y",
      "33":"y",
      "34":"y",
      "35":"y",
      "36":"y",
      "37":"y",
      "38":"y",
      "39":"y",
      "40":"y",
      "41":"y",
      "42":"y",
      "43":"y",
      "44":"y",
      "45":"y",
      "46":"y",
      "47":"y",
      "48":"y",
      "49":"y",
      "50":"y",
      "51":"y",
      "52":"y",
      "53":"y",
      "54":"y",
      "55":"y",
      "56":"y",
      "57":"y"
    },
    "safari":{
      "3.1":"n",
      "3.2":"n",
      "4":"n",
      "5":"y",
      "5.1":"y",
      "6":"y",
      "6.1":"y",
      "7":"y",
      "7.1":"y",
      "8":"y",
      "9":"y",
      "9.1":"y",
      "10":"y",
      "TP":"y"
    },
    "opera":{
      "9":"n",
      "9.5-9.6":"n",
      "10.0-10.1":"n",
      "10.5":"n",
      "10.6":"n",
      "11":"n",
      "11.1":"n",
      "11.5":"n",
      "11.6":"n",
      "12":"n",
      "12.1":"n",
      "15":"y",
      "16":"y",
      "17":"y",
      "18":"y",
      "19":"y",
      "20":"y",
      "21":"y",
      "22":"y",
      "23":"y",
      "24":"y",
      "25":"y",
      "26":"y",
      "27":"y",
      "28":"y",
      "29":"y",
      "30":"y",
      "31":"y",
      "32":"y",
      "33":"y",
      "34":"y",
      "35":"y",
      "36":"y",
      "37":"y",
      "38":"y",
      "39":"y",
      "40":"y",
      "41":"y",
      "42":"y",
      "43":"y"
    },
    "ios_saf":{
      "3.2":"u",
      "4.0-4.1":"u",
      "4.2-4.3":"u",
      "5.0-5.1":"u",
      "6.0-6.1":"u",
      "7.0-7.1":"u",
      "8":"u",
      "8.1-8.4":"u",
      "9.0-9.2":"u",
      "9.3":"u",
      "10-10.1":"u"
    },
    "op_mini":{
      "all":"n"
    },
    "android":{
      "2.1":"u",
      "2.2":"u",
      "2.3":"u",
      "3":"u",
      "4":"u",
      "4.1":"u",
      "4.2-4.3":"u",
      "4.4":"u",
      "4.4.3-4.4.4":"u",
      "53":"u"
    },
    "bb":{
      "7":"u",
      "10":"u"
    },
    "op_mob":{
      "10":"u",
      "11":"u",
      "11.1":"u",
      "11.5":"u",
      "12":"u",
      "12.1":"u",
      "37":"u"
    },
    "and_chr":{
      "54":"y"
    },
    "and_ff":{
      "50":"y"
    },
    "ie_mob":{
      "10":"n",
      "11":"y"
    },
    "and_uc":{
      "11":"u"
    },
    "samsung":{
      "4":"u"
    }
  },
  "notes":"",
  "notes_by_num":{
    "1":"IE9 [supported `dns-prefetch` as `prefetch`](http://blogs.msdn.com/b/ieinternals/archive/2012/03/01/ie10-beta-consumer-preview-minor-changes-changelist.aspx) as the former wasn\u2019t defined yet."
  },
  "usage_perc_y":68.26,
  "usage_perc_a":0.27,
  "ucprefix":false,
  "parent":"",
  "keywords":"",
  "ie_id":"",
  "chrome_id":"",
  "firefox_id":"",
  "webkit_id":"",
  "shown":true
}