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Subnet details 81.221.40.0/21

Network address 81.221.40.0
Prefix length 21 (255.255.248.0)
Range 81.221.40.0 - 81.221.47.255
Hexadecimal 51dd2800
Binary 01010001 11011101 00101000 00000000
Binary subnet mask 11111111 11111111 11111000 00000000
Number of hosts 2,048
Parent subnet 81.221.32.0/20🔍
Previous subnet 81.221.32.0/21🔍
Next subnet 81.221.48.0/21🔍

Subnet tree

Netblock 81.0.0.0/8🔍 RIPE-CIDR-BLOCK (AU)
Route 81.221.0.0/16🔍 AS1836 GREEN green ch AG Autonomous System (CH)🔍
Netblock 81.221.0.0/16🔍 CH-GREEN-20021126 (CH)
Netblock 81.221.40.0/21🔍 GTBCS1003-8-NET (CH)