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 Support simplified and traditional Chinese Query services(Cwhois Services) Special processing procedure at the very beginning stage

Structure Server DB Registrars 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

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