Tom.be

Subnet
Calculator
Merger
Name

Subnet details 81.101.0.0/17

Network address 81.101.0.0
Prefix length 17 (255.255.128.0)
Range 81.101.0.0 - 81.101.127.255
Hexadecimal 51650000
Binary 01010001 01100101 00000000 00000000
Binary subnet mask 11111111 11111111 10000000 00000000
Number of hosts 32,768
Parent subnet 81.101.0.0/16🔍
Previous subnet 81.100.128.0/17🔍
Next subnet 81.101.128.0/17🔍

Subnet tree

Netblock 81.0.0.0/8🔍 RIPE-CIDR-BLOCK (AU)
Route 81.96.0.0/12🔍 AS5089 NTL (GB)🔍
Netblock 81.96.0.0/12🔍 UK-NTLI-20020614 (GB)