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CNNIC Chinese Domain Name Registration System. Zhang Wenhui CNNIC. China Internet Network Information Center. Outline. The Structure Communications between Registry and Registrar Chinese Registry and Registrar Protocol Support multi- character sets
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CNNIC Chinese Domain Name RegistrationSystem Zhang Wenhui CNNIC China Internet Network Information Center
Outline • The Structure • Communications between Registry and Registrar • Chinese Registry and Registrar Protocol • Support multi- character sets • Support simplified and traditional Chinese • Query services(Cwhois Services) • Special processing procedure at the very beginning stage
Structure Registrars Server DB CNNIC
Communication between Registry and Registrars • CRRP 1.0B • Encryption and certification :adopt SSL and ID/Password • Contain domain, host, person objects • Implemented with Java • Provide CRRP client: API and test programs
Communication between Registry and Registrars • Limited the total sessions that the system can provide • Limited the maximum session number that each registrar can connect • Using the IP address of each registrar’s servers to enhance security
Chinese Registry Registrar Protocol • Send three kinds of objects to CNNIC for each domain name • One domain name object, four person contact objects and several name server objects • About 10 command sets • Example, add command set include: add domain, name server and person contact
Chinese Registry Registrar Protocol • Responses tell the result of the command • For example • successful • unsuccessful and the reason number • serial number when adding domain name • nic-handle number when adding person contact • host-handle number when adding name server
Multi-Character Sets • Support: GBK, BIG5, UTF-8 • Support translation between character sets • For the same encoding:first-come-First-serve
Simplified and Traditional Chinese • Treated as one domain name when application, modification and deletion
CNNIC Query Services • Registrar can use CRRP check & status commend to query information about domain names • Provide web-based query services (Cwhois) to query information • whether registered or not • which registrar • then go to the registrar to query detailed info
Registrar Query Service • Each registrar should provide web-based query services (Cwhois) to support information queries about the domain names registered via the registrar • whether successfully registered or not • The registration data about domain name, person and name server • Registrar may provide more query services
Special Processing Procedure • Accept all applications without check whether domain names can be registered or not • Return the sequence number according to the submission sequence to the registrars • Registrar can use the sequence number to query the result and the real submitted time
Thanks! China Internet Network Information Center