1. Recovery of Unused Address Space prop-017-v001
Policy SIG APNIC17/APRICOT Feb
KL, Malaysia

2. Definitions “Historical” “Unrouted” “Unused”
Address space not subject to current policies
Not covered by a current agreement with APNIC (either member or non-membership)
“Unrouted”
Address space which has not been routed on the Internet for some specified (long) period of time
“Unused”
Unrouted and not in private use

3. Background Policies Allocated
This chart provides an overview of the total allocation of IPv4 address space.
“Other orgs” were addresses allocated by the InterNIC before the RIRs existed. They were given out in a classful manner before CIDR was invented.
It is remarkable to see that over the last 10 years that the RIRs have existed, only 14% of the address space has been used up. In total, 30% of the Ipv4 space is still available for allocation. (The “special purpose” address space is multicast, private address space, loopback etc.)
References:
IANA website with overview of total IPv4 address space:

4. Policies
Background
This chart provides an overview of the total allocation of IPv4 address space.
“Other orgs” were addresses allocated by the InterNIC before the RIRs existed. They were given out in a classful manner before CIDR was invented.
It is remarkable to see that over the last 10 years that the RIRs have existed, only 14% of the address space has been used up. In total, 30% of the Ipv4 space is still available for allocation. (The “special purpose” address space is multicast, private address space, loopback etc.)
References:
IANA website with overview of total IPv4 address space:
Allocated but not advertised

5. Background - Historical Space
Approx 36% of all allocated address space is not advertised
Total of 42.4 /8 blocks
Majority is historical
RFC2050 provisions for unrouted addresses
ISP are assumed to be connected to the Internet and to route address space allocated
Assignments to organisations *can* be made if there is no alternative (Section 3.0 a)

6. APNIC Historical Space
Currently total of /24s
2.8 /8s in total
ERX
90% of APNIC Historical space is ERX
Project still underway, ~50% complete
Other
AUNIC space inherited (from 203.0/14)
Other space in 202/7
No formal agreements in place regarding any of this space

7. APNIC Historical Space

8. APNIC Historical Space

9. To recover address space which is unused
Proposal
To recover address space which is unused
To make recovered space available for reallocation, eventually
Not necessarily by APNIC
Operational steps to follow….

10. Operational Steps 1 - 3 1. Obtain list of top level parent blocks
2. Consult RIS to determine if routed
3. Notify resource holders of intent to reclaim

11. Operational Step 4 Response A Response B
Resource holder agrees to return address range to free pool
Address records will be marked as “reclaimed”
Response B
Resource holder does not agree to return address range
Address records updated as necessary
Response C
No response
Address range remains on list for later action

12. Operational Steps 5 - 7
5. Once all blocks complete pause for 2 months repeat steps 2-4
6. After 12 months put ‘no response’ addresses in ‘reclaimed’ pool
7. Develop evaluation and monitoring plan of ‘used’ status
of all APNIC address space

13. NIR Considerations
The NIRs may choose to implement this policy, according to local needs for networks in their economies
Timeframe determined by NIR
Assistance from the NIRs would be very appreciated in contacting holders of historical address blocks

14. Timeframe for APNIC Secretariat
Implementation
Timeframe for APNIC Secretariat
3 months for implementation
Policy development process requires 2 months for comment on mailing list followed by EC approval

15. Questions?
Thank you