routing pres huston unassigned addr

APNICUnassigned Space Report : 

APNIC Unassigned Space Report Geoff Huston February 2003

The Problem: 

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: 

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 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: 

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

APNIC Space Registry: 

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: 

The Free Space Registry ftp://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|20030226|1419|20030226|19700101|28338 apnic||ipv4|169.208.0.0|15|| apnic||ipv4|169.210.0.0|15|| apnic||ipv4|169.212.0.0|14|| apnic||ipv4|169.216.0.0|14|| apnic||ipv4|169.220.0.0|15|| apnic||ipv4|169.222.0.0|16|| apnic||ipv4|169.223.0.0|16|| apnic||ipv4|202.0.8.0|23|| apnic||ipv4|202.0.52.0|22|| apnic||ipv4|202.0.56.0|21||

For example: 

For example 169.208.0.0/15 is not an assigned prefix apnic||ipv4|169.208.0.0|15|| Protocol Prefix Mask

The Active Space Registry: 

The Active Space Registry ftp://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|20030226|3599|19930101|20030225|74609 apnic|JP|ipv4|129.60.0.0|16|20030214|allocated apnic|AU|ipv4|129.78.0.0|16|20030214|allocated apnic|AU|ipv4|129.94.0.0|16|20030214|allocated apnic|AU|ipv4|129.96.0.0|16|20030214|allocated apnic|AU|ipv4|129.127.0.0|16|20030214|allocated apnic|JP|ipv4|129.136.0.0|16|20030214|allocated apnic|AU|ipv4|129.180.0.0|16|20030214|allocated apnic|JP|ipv4|129.249.0.0|16|20030214|allocated apnic|KR|ipv4|129.254.0.0|16|20030214|allocated apnic|AU|ipv4|202.0.0.0|21|19941004|allocated

For example: 

For example 202.0.0.0/21 is an assigned prefix apnic|AU|ipv4|202.0.0.0|21|19941004|allocated Protocol Prefix Mask

APNIC Registry Contents: 

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

Questions?: 

Questions?