Tom.be

Subnet
Calculator
Merger
Name

Subnet details 81.130.128.0/20

Network address 81.130.128.0
Prefix length 20 (255.255.240.0)
Range 81.130.128.0 - 81.130.143.255
Hexadecimal 51828000
Binary 01010001 10000010 10000000 00000000
Binary subnet mask 11111111 11111111 11110000 00000000
Number of hosts 4,096
Parent subnet 81.130.128.0/19🔍
Previous subnet 81.130.112.0/20🔍
Next subnet 81.130.144.0/20🔍

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 81.130.128.0/19🔍 BT-ADSL (GB)