Tom.be

Subnet
Calculator
Merger
Name

Subnet details 81.86.128.0/17

Network address 81.86.128.0
Prefix length 17 (255.255.128.0)
Range 81.86.128.0 - 81.86.255.255
Hexadecimal 51568000
Binary 01010001 01010110 10000000 00000000
Binary subnet mask 11111111 11111111 10000000 00000000
Number of hosts 32,768
Parent subnet 81.86.0.0/16🔍
Previous subnet 81.86.0.0/17🔍
Next subnet 81.87.0.0/17🔍

Subnet tree

Netblock 81.0.0.0/8🔍 RIPE-CIDR-BLOCK (AU)
Route 81.86.0.0/16🔍 AS13285 OPALTELECOM-AS TalkTalk Communications Limited (GB)🔍
Netblock 81.86.0.0/16🔍 UK-OPALNET-20020604 (GB)