CNNIC Chinese Domain Name Registration System

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CNNIC Chinese Domain Name RegistrationSystem

• Zhang Wenhui
• CNNIC

China Internet Network Information Center
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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

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Structure
Registrars
Server
DB
CNNIC
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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

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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 registrars servers
  to enhance security

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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

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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

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Multi-Character Sets

• Support GBK, BIG5, UTF-8
• Support translation between character sets
• For the same encodingfirst-come-First-serve

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Simplified and Traditional Chinese

• Treated as one domain name when application,
  modification and deletion

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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

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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

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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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Thanks!
China Internet Network Information Center