Tom.be

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Subnet details 81.87.240.0/21

Network address 81.87.240.0
Prefix length 21 (255.255.248.0)
Range 81.87.240.0 - 81.87.247.255
Hexadecimal 5157f000
Binary 01010001 01010111 11110000 00000000
Binary subnet mask 11111111 11111111 11111000 00000000
Number of hosts 2,048
Parent subnet 81.87.240.0/20🔍
Previous subnet 81.87.232.0/21🔍
Next subnet 81.87.248.0/21🔍

Subnet tree

Netblock 81.0.0.0/8🔍 RIPE-CIDR-BLOCK (AU)
Route 81.87.0.0/16🔍 AS786 JANET Jisc Services Limited (GB)🔍
Netblock 81.87.0.0/16🔍 UK-JANET-20020617 (GB)