Four-byte AS numbers now default assignment type
APNIC has implemented phase two of a globally coordinated transition to four-byte AS numbers.
APNIC has now implemented the second phase of the globally coordinated transition to four-byte AS numbers.
Organizations submitting requests for AS numbers from 1 January 2009 onwards will be assigned four-byte AS numbers by default. Organizations wishing to be assigned two-byte AS numbers can state this in the request form.
For more information on the implementation phases of the four-byte ASnumber policy, please see "Policies for Autonomous System number management in the Asia Pacific region" section 6.3, Timetable for moving from two-byte only AS numbers to four-byte AS numbers.
Information on four-byte AS numbers
To learn more about how the transition to four-byte AS numbers may affect your network, see: