Prefix Assignments

Prefix Dotted-Decimal Number of Number of Class

Addresses Adresses

/14

/15

/16

/17

/18

/19

/20

/21

/22

/23

/24

/25

/26

/27

255.252.0.0

255.254.0.0

255.255.0.0

255.255.128.0

255.255.192.0

255.255.224.0

255.255.240.0

255.255.248.0

255.255.252.0

255.255.254.0

255.255.255.0

255.255.255.128

255.255.255.192

255.255.255.224

256k

128k

64k

32k

16k

8k

4k

2k

1k

512

256

128

64

32

4 Class B or 1024 Class C

2 Class B or 512 Class C

1 Class B or 256 Class C

128 Class C

64 Class C

32 Class C

16 Class C

8 Class C

4 Class C

2 Class C

1 Class C

_Class C

_Class C

1/8 Class C

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