Tom.be

Subnet
Calculator
Merger
Name

Subnet details 203.91.120.0/21

Network address 203.91.120.0
Prefix length 21 (255.255.248.0)
Range 203.91.120.0 - 203.91.127.255
Hexadecimal cb5b7800
Binary 11001011 01011011 01111000 00000000
Binary subnet mask 11111111 11111111 11111000 00000000
Number of hosts 2,048
Parent subnet 203.91.112.0/20🔍
Previous subnet 203.91.112.0/21🔍
Next subnet 203.91.128.0/21🔍

Subnet tree

Netblock 203.0.0.0/8🔍 APNIC-AP (AU)
Route 203.91.120.0/21🔍 AS4538 ERX-CERNET-BKB China Education and Research Network Center (CN)🔍
Netblock 203.91.120.0/21🔍 DRAGONLAB-CERNET (CN)