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Subnet details 81.63.64.0/21

Network address 81.63.64.0
Prefix length 21 (255.255.248.0)
Range 81.63.64.0 - 81.63.71.255
Hexadecimal 513f4000
Binary 01010001 00111111 01000000 00000000
Binary subnet mask 11111111 11111111 11111000 00000000
Number of hosts 2,048
Parent subnet 81.63.64.0/20🔍
Previous subnet 81.63.56.0/21🔍
Next subnet 81.63.72.0/21🔍

Subnet tree

Netblock 81.0.0.0/8🔍 RIPE-CIDR-BLOCK (AU)
Route 81.62.0.0/15🔍 AS3303 SWISSCOM Swisscom Switzerland Ltd (CH)🔍
Netblock 81.62.0.0/15🔍 CH-BLUEWINDOW-20021217 (CH)
Route 81.63.0.0/17🔍 AS60633 SWISSCOM-MPLS-TRANSIT Swisscom MPLS VPN Transit Network (CH)🔍
Netblock 81.63.64.0/18🔍 BLUEWINNET (CH)