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Subnet details 121.21.0.0/17

Network address 121.21.0.0
Prefix length 17 (255.255.128.0)
Range 121.21.0.0 - 121.21.127.255
Hexadecimal 79150000
Binary 01111001 00010101 00000000 00000000
Binary subnet mask 11111111 11111111 10000000 00000000
Number of hosts 32,768
Parent subnet 121.21.0.0/16🔍
Previous subnet 121.20.128.0/17🔍
Next subnet 121.21.128.0/17🔍

Subnet tree

Netblock 112.0.0.0/4🔍 NON-RIPE-NCC-MANAGED-ADDRESS-BLOCK (EU # Country is really world wide)
Netblock 121.0.0.0/8🔍 APNIC-AP (AU)
Netblock 121.0.0.0/9🔍 NON-RIPE-NCC-MANAGED-ADDRESS-BLOCK (EU # Country is really world wide)
Route 121.16.0.0/12🔍 AS4837 CHINA169-Backbone CHINA UNICOM China169 Backbone (CN)🔍
Netblock 121.16.0.0/13🔍 UNICOM-HE (CN)