Tom.be

Subnet
Calculator
Merger
Name

Subnet details 81.40.248.0/21

Network address 81.40.248.0
Prefix length 21 (255.255.248.0)
Range 81.40.248.0 - 81.40.255.255
Hexadecimal 5128f800
Binary 01010001 00101000 11111000 00000000
Binary subnet mask 11111111 11111111 11111000 00000000
Number of hosts 2,048
Parent subnet 81.40.240.0/20🔍
Previous subnet 81.40.240.0/21🔍
Next subnet 81.41.0.0/21🔍

Subnet tree

Netblock 81.0.0.0/8🔍 RIPE-CIDR-BLOCK (AU)
Route 81.32.0.0/12🔍 AS3352 Telefonica de EspaNa (ES)🔍
Netblock 81.32.0.0/12🔍 ES-TELEFONICA-20020215 (ES)
Netblock 81.40.0.0/16🔍 RIMA (ES)