IPv6 Netmasks
<![CDATA[
IPv6 Space == 340,282,366,920,938,463,463,374,607,431,768,211,456 Addresses
Classless masks
# Bit Mask # of /64 IP networks
64 0::/64 1
63 0::/63 2
62 0::/62 4
61 0::/61 8
60 0::/60 16
59 0::/59 32
58 0::/58 64
57 0::/57 128
56 0::/56 256
55 0::/55 512
54 0::/54 1,024
53 0::/53 2,048
52 0::/52 4,096
51 0::/51 8,192
50 0::/50 16,384
49 0::/49 32,768
48 0::/48 65,536
47 0::/47 131,072
46 0::/46 262,144
45 0::/45 524,288
44 0::/44 1,048,576
43 0::/43 2,097,152
42 0::/42 4,194,304
41 0::/41 8,388,608
40 0::/40 16,777,216
39 0::/39 33,554,432
38 0::/38 67,108,864
37 0::/37 134,217,728
36 0::/36 268,435,456
35 0::/35 536,870,912
34 0::/34 1,073,741,824
33 0::/33 2,147,483,648
32 0::/32 4,294,967,296
31 0::/31 8,589,934,592
30 0::/30 17,179,869,184
29 0::/29 34,359,738,368
28 0::/28 68,719,476,736
27 0::/27 137,438,953,472
26 0::/26 274,877,906,944
25 0::/25 549,755,813,888
24 0::/24 1,099,511,627,776
23 0::/23 2,199,023,255,552
22 0::/22 4,398,046,511,104
Typical full address format: XXXX:XXXX:XXXX:XXXX:XXXX:XXXX:XXXX:XXXX
64 1 /64 XXXX:XXXX:XXXX:XXXX/64
63 2 /64 XXXX:XXXX:XXXX:0002/64
62 4 /64 XXXX:XXXX:XXXX:0004/64
61 8 /64 XXXX:XXXX:XXXX:0008/64
60 16 /64 1 /60 XXXX:XXXX:XXXX:0010/64 XXXX:XXXX:XXXX:XXXX/60
59 32 /64 2 /60 XXXX:XXXX:XXXX:0020/64 XXXX:XXXX:XXXX:0020/60
58 64 /64 4 /60 XXXX:XXXX:XXXX:0040/64 XXXX:XXXX:XXXX:0040/60
57 128 /64 8 /60 XXXX:XXXX:XXXX:0080/64 XXXX:XXXX:XXXX:0080/60
56 256 /64 16 /60 1 /56 XXXX:XXXX:XXXX:0100/64 XXXX:XXXX:XXXX:XX/56
55 512 /64 32 /60 2 /56 XXXX:XXXX:XXXX:0200/64 XXXX:XXXX:XXXX:02/56
54 1024 /64 64 /60 4 /56 XXXX:XXXX:XXXX:0400/64 XXXX:XXXX:XXXX:04/56
53 2048 /64 128 /60 8 /56 XXXX:XXXX:XXXX:0800/64 XXXX:XXXX:XXXX:08/56
52 4096 /64 256 /60 16 /56 XXXX:XXXX:XXXX:1000/64 XXXX:XXXX:XXXX:10/56
51 8192 /64 512 /60 32 /56 XXXX:XXXX:XXXX:2000/64 XXXX:XXXX:XXXX:20/56
50 16384 /64 1024 /60 64 /56 XXXX:XXXX:XXXX:4000/64 XXXX:XXXX:XXXX:40/56
49 32768 /64 2048 /60 128 /56 XXXX:XXXX:XXXX:8000/64 XXXX:XXXX:XXXX:80/56
48 65536 /64 4096 /60 256 /56 1 /48 XXXX:XXXX:XXXX/48
47 131072 /64 8192 /60 512 /56 2 /48 XXXX:XXXX:0002/48
46 262144 /64 16384 /60 1024 /56 4 /48 XXXX:XXXX:0004/48
45 524288 /64 32768 /60 2048 /56 8 /48 XXXX:XXXX:0008/48
44 1048576 /64 65536 /60 4096 /56 16 /48 XXXX:XXXX:0010/48
43 2097152 /64 131072 /60 8192 /56 32 /48 XXXX:XXXX:0020/48
42 4194304 /64 262144 /60 16384 /56 64 /48 XXXX:XXXX:0040/48
41 8388608 /64 524288 /60 32768 /56 128 /48 XXXX:XXXX:0080/48
40 16777216 /64 1048576 /60 65536 /56 256 /48 1 /40 XXXX:XXXX:0100/48 XXXX:XXXX:XX/40
39 33554432 /64 2097152 /60 131072 /56 512 /48 2 /40 XXXX:XXXX:0200/48 XXXX:XXXX:02/40
38 67108864 /64 4194304 /60 262144 /56 1024 /48 4 /40 XXXX:XXXX:0400/48 XXXX:XXXX:04/40
37 134217728 /64 8388608 /60 524288 /56 2048 /48 8 /40 XXXX:XXXX:0800/48 XXXX:XXXX:08/40
36 268435456 /64 16777216 /60 1048576 /56 4096 /48 16 /40 XXXX:XXXX:1000/48 XXXX:XXXX:10/40
35 536870912 /64 33554432 /60 2097152 /56 8192 /48 32 /40 XXXX:XXXX:2000/48 XXXX:XXXX:20/40
34 1073741824 /64 67108864 /60 4194304 /56 16384 /48 64 /40 XXXX:XXXX:4000/48 XXXX:XXXX:40/40
33 2147483648 /64 134217728 /60 8388608 /56 32768 /48 128 /40 XXXX:XXXX:8000/48 XXXX:XXXX:80/40
32 4294967296 /64 268435456 /60 16777216 /56 65536 /48 256 /40 1 /32 XXXX:XXXX/32
::/128 - Unspecified
::1/128 - Loopback
FC00::/7 - Unique Local Address - http://tools.ietf.org/html/rfc4193
FE80::/10 - Link Local Address
FF00::/8 - Multicast Address
]]>