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Subnet details 81.31.16.0/21

Network address 81.31.16.0
Prefix length 21 (255.255.248.0)
Range 81.31.16.0 - 81.31.23.255
Hexadecimal 511f1000
Binary 01010001 00011111 00010000 00000000
Binary subnet mask 11111111 11111111 11111000 00000000
Number of hosts 2,048
Parent subnet 81.31.16.0/20🔍
Previous subnet 81.31.8.0/21🔍
Next subnet 81.31.24.0/21🔍

Subnet tree

Netblock 81.0.0.0/8🔍 RIPE-CIDR-BLOCK (AU)
Route 81.31.0.0/19🔍 AS3257 GTT-BACKBONE GTT (US)🔍
Netblock 81.31.0.0/19🔍 US-GTTCOMMUNICATIONS-20030519 (GB)