APNIC Unassigned Space Report Geoff Huston March 2003.

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Presentation transcript:

APNIC Unassigned Space Report Geoff Huston March 2003

The Problem How can you tell if a route advertisement is incorrect? –By incorrect it is meant that the route advertisement is referring to address space that has not been allocated by any RIR to any end party –i.e. advertising an address block taken from the unallocated address pool

The normal ISP solution Use an administrative process to check the RIR whois database to see if the address block has been allocated –No single whois database that is authoritative for the entire IPv4 address space –Each RIR has a different response syntax to whois queries

The Idea The RIRs to coordinate the operation of a set of lists (registries) These registries contain the inverse of the allocated address space These registries can be used in a variety of ways to determine the validity of a routing request

The Application Existing ISP administrative processes can use a deterministic process to check if a proposed route advertisement is valid

APNIC Space Registry The registry contains the maximally aggregated description of the inactive address blocks for IPv4 and IPv6 The registry also contains the active (assigned) address blocks for IPv4 and IPv6

The Free Space Registry ftp://ftp.apnic.net/pub/apnic/freespace/ apnic-ipv4-latest.inactiveftp://ftp.apnic.net/pub/apnic/freespace/ apnic-ipv4-latest.inactive #****************************************************************** #IMPORTANT: For an explanation of this report and the terms and conditions of #its use, please refer to the following following: # #ftp://ftp.apnic.net/pub/apnic/stats/apnic/_README-apnic-stats.txt #****************************************************************** 1|apnic| |1419| | |28338 apnic||ipv4| |15|| apnic||ipv4| |15|| apnic||ipv4| |14|| apnic||ipv4| |14|| apnic||ipv4| |15|| apnic||ipv4| |16|| apnic||ipv4| |16|| apnic||ipv4| |23|| apnic||ipv4| |22|| apnic||ipv4| |21||

For example /15 is not an assigned prefix apnic||ipv4| |15|| ProtocolPrefixMask

The Active Space Registry ftp://ftp.apnic.net/pub/apnic/freespace/ apnic-ipv4-latest.activeftp://ftp.apnic.net/pub/apnic/freespace/ apnic-ipv4-latest.active #****************************************************************** #IMPORTANT: For an explanation of this report and the terms and conditions of #its use, please refer to the following following: # #ftp://ftp.apnic.net/pub/apnic/stats/apnic/_README-apnic-stats.txt #****************************************************************** 1|apnic| |3599| | |74609 apnic|JP|ipv4| |16| |allocated apnic|AU|ipv4| |16| |allocated apnic|AU|ipv4| |16| |allocated apnic|AU|ipv4| |16| |allocated apnic|AU|ipv4| |16| |allocated apnic|JP|ipv4| |16| |allocated apnic|AU|ipv4| |16| |allocated apnic|JP|ipv4| |16| |allocated apnic|KR|ipv4| |16| |allocated apnic|AU|ipv4| |21| |allocated

For example /21 is an assigned prefix apnic|AU|ipv4| |21| |allocated ProtocolPrefixMask

APNIC Registry Contents apnic-ipv4-latest.inactive apnic-ipv4-latest.active apnic-ipv6-latest.inactive apnic-ipv6-latest.active History files: apnic- -.[in]active

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