Minimum prefix and delegations sizes

IPv4

APNIC's current minimum IPv4 delegation size is a /24.

Address range Size of minimum IPv4 portable allocation or portable assignment

1/8 /24 portable assignments
14/8 /24 portable assignments
27/8 /24 portable assignments
36/8 /24 portable assignments
39/8 /24 portable assignments
42/8 /24 portable assignments
49/8 /24 portable assignments
58/8 /24 portable assignments
59/8 /24 portable assignments
60/8 /24 portable assignments
61/8 /24 portable assignments
101/8 /24 portable assignments
103/8 /24 portable assignments
106/8 /24 portable assignments
110/8 /24 portable assignments
111/8 /24 portable assignments
112/8 /24 portable assignments
113/8 /24 portable assignments
114/8 /24 portable assignments
115/8 /24 portable assignments
116/8 /24 portable assignments
117/8 /24 portable assignments
118/8 /24 portable assignments
119/8 /24 portable assignments
120/8 /24 portable assignments
121/8 /24 portable assignments
122/8 /24 portable assignments
123/8 /24 portable assignments
124/8 /24 portable assignments
125/8 /24 portable assignments
126/8 /24 portable assignments
175/8 /24 portable assignments
180/8 /24 portable assignments
182/8 /24 portable assignments
183/8 /24 portable assignments
202/8 /24 portable assignments
203/8 /24 portable assignments *
210/8 /24 portable assignments
211/8 /24 portable assignments
218/8 /24 portable assignments #
219/8 /24 portable assignments
220/8 /24 portable assignments
221/8 /24 portable assignments
222/8 /24 portable assignments
223/8 /24 portable assignments


*
Since 2 December 2002, Critical Infrastructure assignments were made from the reserved block 203.119.0.0/16. The minimum size of a Critical Infrastructure assignment is /24.

# Since 3 December 2001, IXP assignments were made from the reserved block 218.100.0.0/16. The minimum size of an IXP assignment is /24.

History of APNIC minimum IPv4 allocation size changes

Date Old size New size
04 August 2000 /19 /20
16 August 2004 /20 /21
04 August 2008 /21 /22
09 May 2011 /22 /24

Top

IPv6

Address range Size of minimum IPv6 portable allocation or portable assignment

2001:B000::/20 /32 portable allocations
2001:4400::/23 /32 portable allocations
2001:0200:/23 /35 portable allocations
2001:0C00:/23 /48 portable assignments **
2001:0E00:/23 /32 portable allocations
2001:07FA:/32 /64 portable assignments ##
2001:8000::/23 /32 portable allocations
2001:8200::/23 /32 portable allocations
2001:8400::/23 /32 portable allocations
2001:8600::/23 /32 portable allocations
2001:8800::/23 /32 portable allocations
2001:8A00::/23 /32 portable allocations
2001:8C00::/23 /32 portable allocations
2001:8E00::/23 /32 portable allocations
2001:9000::/23 /32 portable allocations
2001:9200::/23 /32 portable allocations
2001:9400::/23 /32 portable allocations
2001:9600::/23 /32 portable allocations
2001:9800::/23 /32 portable allocations
2001:9A00::/23 /32 portable allocations
2001:9C00::/23 /32 portable allocations
2001:9E00::/23 /32 portable allocations
2001:A000::/23 /32 portable allocations
2001:A200::/23 /32 portable allocations
2001:A400::/23 /32 portable allocations
2001:A600::/23 /32 portable allocations
2001:A800::/23 /32 portable allocations
2001:AA00::/23 /32 portable allocations
2001:AC00::/23 /32 portable allocations
2001:AE00::/23 /32 portable allocations
2400:0000::/12 /32 portable allocations

** All portable assignments are made from this range. The documentation prefix is also located within this range.

## IXP assignments were made from this range before 31 December 2006.  From 1 January 2007, new IXP assignments have been made from 2001:0DE8::/29 (part of 2001:0c00:/23).