Tom.be

Subnet
Calculator
Merger
Name

Subnet details 221.9.40.0/21

Network address 221.9.40.0
Prefix length 21 (255.255.248.0)
Range 221.9.40.0 - 221.9.47.255
Hexadecimal dd092800
Binary 11011101 00001001 00101000 00000000
Binary subnet mask 11111111 11111111 11111000 00000000
Number of hosts 2,048
Parent subnet 221.9.32.0/20🔍
Previous subnet 221.9.32.0/21🔍
Next subnet 221.9.48.0/21🔍

Subnet tree

Netblock 221.0.0.0/8🔍 APNIC-AP (AU)
Route 221.8.0.0/14🔍 AS4837 CHINA169-Backbone CHINA UNICOM China169 Backbone (CN)🔍
Netblock 221.8.0.0/15🔍 UNICOM-JL (CN)