Tom.be

Subnet
Calculator
Merger
Name

Subnet details 221.4.8.0/21

Network address 221.4.8.0
Prefix length 21 (255.255.248.0)
Range 221.4.8.0 - 221.4.15.255
Hexadecimal dd040800
Binary 11011101 00000100 00001000 00000000
Binary subnet mask 11111111 11111111 11111000 00000000
Number of hosts 2,048
Parent subnet 221.4.0.0/20🔍
Previous subnet 221.4.0.0/21🔍
Next subnet 221.4.16.0/21🔍

Subnet tree

Netblock 221.0.0.0/8🔍 APNIC-AP (AU)
Route 221.4.0.0/16🔍 AS17816 CHINA169-GZ China Unicom IP network China169 Guangdong province (CN)🔍
Netblock 221.4.0.0/16🔍 UNICOM-GD (CN)