![]() You don't have to do any extra work to make this happen. That means you can also use DNSQuerySniffer to show you which of your apps are making background web requests, and the domains they're trying to reach. They're made whenever an app accesses a website. Click File > Clear All Current Items if you'd like to empty the table and start again.) What's using your internet connection?ĭNS queries aren't just used for browsers. (Note that DNSQuerySniffer keeps adding new queries to the end of the table, which can make for a very long list in a very short time. Try a few of your favorite websites, see how they compare. Are there any you recognize, are some sites querying a high number of ad, tracker or social media domains? Maybe others look really clean by comparison: they're loading their own HTML, images and scripts from their own servers, but not trying to share your details with the rest of the world. ![]() That works as a quick and easy demonstration of why some sites are really, really slow: they must access content from a long list of other domains before they can finish loading.īut it can also be interesting if you look at exactly which domains they're accessing. Some might store their own content - images, videos, comments, scripts - but they can also link to ad servers, trackers, all kinds of other third-party sites. Newspaper websites are often a good choice.ĭNSQuerySniffer can show a huge number of queries - 20, 30, 40, more - from a single page, because big websites often contact so many other many domains. To get a look at how DNS works on the web, just point your browser at a popular ad-packed website which you haven't visited so far today (because your system might have stored previous DNS query results, and you won't see them this time).
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