. CN domain name today, a large area of paralysis is now back to normal

August 25 Morning News, part. CN domain name appeared in the early morning unresolved problems. Dnspod founder Wu Hongshong, a domain-resolution provider, said in a microblog that the failure occurred because of the time. CN Domain Name root server (interpretation see article end note) was attacked, authorized DNS (domain Name System) also fall into full line failure. About 4 o'clock in the morning. CN domain resolution restored to normal.

. CN domain name is China's state-registered top-level domain name, in the domestic registration management is vested in the China Internet Network Information Center (CNNIC), for ordinary individuals to open the application. Not 1 o'clock in the morning yesterday, some Web sites with the. cn root domain name cannot be opened. Dnspod, founder of another domain-resolution provider, Wu Hongshong, said in a microblog that the root cause of the failure was. CN domain Name root server was attacked, resulting in the authorization of DNS (domain Name System) also into a full range of failures can not be properly resolved.

DNS is a distributed database of domain names and IP addresses that are mapped to each other, making it easier for people to access the Internet. DNS is like an automatic telephone directory, users can directly enter the site name to replace the input of complex IP address, and the site name and IP mapping between the DNS service to complete.

It is understood that the affected site not only includes. CN domain name, also includes. COM. CN domain name. About 4 o'clock in the morning, CNNIC official micro-blog said. CN root DNS Server resolution service is normal.

This is also. CN Domain name has occurred in recent years the biggest failure. Because the fault occurred in the wee hours, the actual impact on the user is relatively small. CNNIC officials have yet to elaborate on the breakdown.

Note (from Wikipedia): The root domain name server (root-servers.org) is the highest level domain name server in the Internet Domain name resolution system (DNS), with only 13 root servers worldwide. The current distribution is: The primary root server (a) the United States 1, located in the Virginia State Dulles, Auxiliary root server (b to M) the United States 9, Sweden, the Netherlands, Japan one. In addition, by Anycast (anycast) technology, some root domain servers have multiple mirror servers (mirror) around the world, so they can resist the distributed denial of service (DDoS) attacks against them.