In this case an error message will result if you try to connect to site, this delay of five minutes can be nuisance.
Another more common problem can arise from URLs that are temporarily busy or from congested Internet traffic. Windows XP comes with useful commandline utility ipconfig discussed here that has switch, flushdns, for removing the entries in the cache. often encounter Web sites that do not respond immediately but which are available after short wait and retry. This requires Registry edit so should be done only by those who know how to restore their Registry. If it finds the resolved URL locally it uses thatIP.
Personally, find that it sometimes speedsup Internet browsing to do this flush even when there are no obvious error messages. If you are curious about the contents of the DNS cache, they can also be seenby using ipconfig. In this case open command prompt and enteripconfig displaydnsIf you are experiencing trouble connecting to particular Web site, it beuseful to see if it is there before querying the externalname server used by your ISP. In other words, once negative response is received from an attempt to connect, that result is also kept in the local cache.
Anytime your browser requests an URL, WindowsXP first looks in the local cache. Open command prompt and enteripconfig flushdnsand the cache will emptied. This is supposed to save time and cut down on Web traffic Problems The default time period for retaining negative response is five minutes. Clear the DNS resolver cache Fortunately, it is possible to clear out the local DNS cache in order to around these types of problems. It is not frequent occurrence but is not unknown.
Anytime your browser requests an URL, WindowsXP first looks in the local cache to see if it is there before querying the externalname
Since temporary congestion lasting few seconds is often the cause of momentary inability to connect to the URL. This is supposed to save time and cut down on Web traffic Problems The default time period for keeping an address in the cache is hours. This requires Registry edit so should be done only by those who know how to restore their Registry. If you wish to shorten the TTL, create the entry and enter your preferred time in seconds.