{"json_modified": "2016-03-28T08:29:07.110542", "uuid": "ecebe538-330b-4fc8-b1f6-fad769d674d2", "title": "PerformanceTiming.domainLookupStart", "url": "/en-US/docs/Web/API/PerformanceTiming/domainLookupStart", "tags": ["API", "Navigation Timing", "Read-only", "PerformanceTiming", "Reference", "Property", "R\u00e9f\u00e9rence"], "translations": [], "modified": "2015-02-22T10:50:51", "label": "PerformanceTiming.domainLookupStart", "localization_tags": [], "locale": "en-US", "id": 81475, "last_edit": "2015-02-22T10:46:46", "summary": "The <code><strong>PerformanceTiming</strong></code><strong><code>.domainLookupStart</code></strong> read-only property returns an <code>unsigned long long</code> representing the moment, in miliseconds since the UNIX epoch, where the domain lookup starts. If a persistent connection is used, or the information is stored in a cache or a local resource, the value will be the same as <a href=\"/en-US/docs/Web/API/PerformanceTiming/fetchStart\" title=\"The PerformanceTiming.fetchStart read-only property returns an unsigned long long representing the moment, in miliseconds since the UNIX epoch, the browser is ready to fetch the document using an HTTP request. This moment is before the check to any application cache.\"><code>PerformanceTiming.fetchStart</code></a>.", "sections": [{"id": "Quick_Links", "title": null}, {"id": "Summary", "title": "Summary"}, {"id": "Syntax", "title": "Syntax"}, {"id": "Specifications", "title": "Specifications"}, {"id": "Browser_compatibility", "title": "Browser compatibility"}, {"id": "See_also", "title": "See also"}], "slug": "Web/API/PerformanceTiming/domainLookupStart", "review_tags": []}