Tom.be

Subnet
Calculator
Merger
Name

Subnet details 123.64.72.0/21

Network address 123.64.72.0
Prefix length 21 (255.255.248.0)
Range 123.64.72.0 - 123.64.79.255
Hexadecimal 7b404800
Binary 01111011 01000000 01001000 00000000
Binary subnet mask 11111111 11111111 11111000 00000000
Number of hosts 2,048
Parent subnet 123.64.64.0/20🔍
Previous subnet 123.64.64.0/21🔍
Next subnet 123.64.80.0/21🔍

Subnet tree

Netblock 122.0.0.0/7🔍 APNIC-AP (AU)
Netblock 123.64.0.0/11🔍 CTTNET (CN)
Route 123.64.0.0/15🔍 AS9394 CTTNET China TieTong Telecommunications Corporation (CN)🔍