Tom.be

Subnet
Calculator
Merger
Name

Subnet details 81.64.8.0/21

Network address 81.64.8.0
Prefix length 21 (255.255.248.0)
Range 81.64.8.0 - 81.64.15.255
Hexadecimal 51400800
Binary 01010001 01000000 00001000 00000000
Binary subnet mask 11111111 11111111 11111000 00000000
Number of hosts 2,048
Parent subnet 81.64.0.0/20🔍
Previous subnet 81.64.0.0/21🔍
Next subnet 81.64.16.0/21🔍

Subnet tree

Netblock 81.0.0.0/8🔍 RIPE-CIDR-BLOCK (AU)
Route 81.64.0.0/14🔍 AS15557 LDCOMNET --- I3Dnet --- (FR)🔍
Netblock 81.64.0.0/14🔍 FR-SFR-20020103 (FR)
Netblock 81.64.0.0/16🔍 FR-NCNUMERICABLE (FR)