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Subnet details 81.136.0.0/13

Network address 81.136.0.0
Prefix length 13 (255.248.0.0)
Range 81.136.0.0 - 81.143.255.255
Hexadecimal 51880000
Binary 01010001 10001000 00000000 00000000
Binary subnet mask 11111111 11111000 00000000 00000000
Number of hosts 524,288
Parent subnet 81.128.0.0/12🔍
Previous subnet 81.128.0.0/13🔍
Next subnet 81.144.0.0/13🔍

Subnet tree

Netblock 81.0.0.0/8🔍 RIPE-CIDR-BLOCK (AU)
Route 81.128.0.0/11🔍 AS2856 BT-UK-AS BTnet UK Regional network (GB)🔍
Netblock 81.128.0.0/11🔍 UK-BT-20020725 (GB)
Netblock 81.128.0.0/12🔍 BT-INFRA (GB)