Tom.be

Subnet
Calculator
Merger
Name

Subnet details 123.101.0.0/21

Network address 123.101.0.0
Prefix length 21 (255.255.248.0)
Range 123.101.0.0 - 123.101.7.255
Hexadecimal 7b650000
Binary 01111011 01100101 00000000 00000000
Binary subnet mask 11111111 11111111 11111000 00000000
Number of hosts 2,048
Parent subnet 123.101.0.0/20🔍
Previous subnet 123.100.248.0/21🔍
Next subnet 123.101.8.0/21🔍

Subnet tree

Netblock 112.0.0.0/4🔍 NON-RIPE-NCC-MANAGED-ADDRESS-BLOCK (EU # Country is really world wide)
Netblock 122.0.0.0/7🔍 APNIC-AP (AU)
Netblock 123.0.0.0/8🔍 NON-RIPE-NCC-MANAGED-ADDRESS-BLOCK (EU # Country is really world wide)
Netblock 123.0.0.0/9🔍 NON-RIPE-NCC-MANAGED-ADDRESS-BLOCK (EU # Country is really world wide)
Route 123.101.0.0/16🔍 AS4134 CHINANET-BACKBONE No 31 Jin-rong Street (CN)🔍
Netblock 123.101.0.0/16🔍 MAINT-CHINANET-HA (CN)
Route 123.101.0.0/21🔍 AS4809 CHINATELECOM-CORE-WAN-CN2 China Telecom Next Generation Carrier Network (CN)🔍