Historical prefix exchange policy
Many networks hold non-contiguous historical address ranges that must be announced separately to the global routing table. To help reduce the size of the global routing table, APNIC will exchange non-contiguous portable historical address ranges registered in the APNIC Whois Database for a single portable CIDR range of equal length or one a bit shorter.
For example a network could exchange three non-contiguous /24 address blocks for a contiguous /22 address block.
APNIC will not inquire about the utilization of the address ranges to be exchanged.
APNIC members and non-members and organizations with no existing relationship with APNIC can take advantage of this policy.
Criteria for exchange of non-contiguous blocks
To exchange non-contiguous address blocks, a network must meet the following criteria:
- At least three address ranges must be returned that are routed separately
- All address ranges returned must be portable allocations or portable assignments
- APNIC can verify the network is the legitimate holder of the address ranges
- The network operates in the Asia Pacific area. Networks wishing to exchange non-contiguous address blocks should use the Provider Independent IP address return form