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Subnet details 81.17.40.0/21

Network address 81.17.40.0
Prefix length 21 (255.255.248.0)
Range 81.17.40.0 - 81.17.47.255
Hexadecimal 51112800
Binary 01010001 00010001 00101000 00000000
Binary subnet mask 11111111 11111111 11111000 00000000
Number of hosts 2,048
Parent subnet 81.17.32.0/20🔍
Previous subnet 81.17.32.0/21🔍
Next subnet 81.17.48.0/21🔍

Subnet tree

Netblock 81.0.0.0/8🔍 RIPE-CIDR-BLOCK (AU)
Netblock 81.17.32.0/19🔍 NL-LEASEWEB-20020109 (NL)