Network address
81.9.0.0
Prefix length
21 (255.255.248.0)
Range
81.9.0.0 - 81.9.7.255
Hexadecimal
51090000
Binary
01010001 00001001 00000000 00000000
Binary subnet mask
11111111 11111111 11111000 00000000
Number of hosts
2,048
Parent subnet
81.9.0.0/20🔍
Previous subnet
81.8.248.0/21🔍