Tom.be

Subnet
Calculator
Merger
Name

Subnet details 221.12.0.0/21

Network address 221.12.0.0
Prefix length 21 (255.255.248.0)
Range 221.12.0.0 - 221.12.7.255
Hexadecimal dd0c0000
Binary 11011101 00001100 00000000 00000000
Binary subnet mask 11111111 11111111 11111000 00000000
Number of hosts 2,048
Parent subnet 221.12.0.0/20🔍
Previous subnet 221.11.248.0/21🔍
Next subnet 221.12.8.0/21🔍

Subnet tree

Netblock 221.0.0.0/8🔍 APNIC-AP (AU)
Netblock 221.12.0.0/15🔍 UNICOM-HA (CN)
Netblock 221.12.0.0/16🔍 UNICOM-ZJ (CN)
Route 221.12.0.0/17🔍 AS4837 CHINA169-Backbone CHINA UNICOM China169 Backbone (CN)🔍