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Subnet details 81.133.128.0/20

Network address 81.133.128.0
Prefix length 20 (255.255.240.0)
Range 81.133.128.0 - 81.133.143.255
Hexadecimal 51858000
Binary 01010001 10000101 10000000 00000000
Binary subnet mask 11111111 11111111 11110000 00000000
Number of hosts 4,096
Parent subnet 81.133.128.0/19🔍
Previous subnet 81.133.112.0/20🔍
Next subnet 81.133.144.0/20🔍

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)
Netblock 81.133.128.0/17🔍 BT-ADSL (GB)
Netblock 81.133.128.0/18🔍 BT-ADSL (GB)