Missing dot drops Sweden off the Internet - by Paul McNamara
What was essentially a typo last week resulted in the temporary disappearance from the Internet of almost a million Web sites in Sweden -- every address with a .se top-level down name. According to Web monitoring company Pingdom, which happens to be based in Sweden, the disablement of an entire top-level domain "is exceptionally rare. … Usually it's a single domain name that has been incorrectly configured or the DNS servers of a single Web host having problems. Problems that affect an entire top-level zone have very wide-ranging effects as can be seen by the .se incident. … Imagine the same thing happening to the .com domain, which has over 80 million domain names." The total blackout of .se lasted for about an hour and a half, Pingdom says, although aftershocks continued for days
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