Network address
81.21.128.0
Prefix length
17 (255.255.128.0)
Range
81.21.128.0 - 81.21.255.255
Hexadecimal
51158000
Binary
01010001 00010101 10000000 00000000
Binary subnet mask
11111111 11111111 10000000 00000000
Number of hosts
32,768
Parent subnet
81.21.0.0/16🔍
Previous subnet
81.21.0.0/17🔍
Next subnet
81.22.0.0/17🔍