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Subnet details 81.100.40.0/21

Network address 81.100.40.0
Prefix length 21 (255.255.248.0)
Range 81.100.40.0 - 81.100.47.255
Hexadecimal 51642800
Binary 01010001 01100100 00101000 00000000
Binary subnet mask 11111111 11111111 11111000 00000000
Number of hosts 2,048
Parent subnet 81.100.32.0/20🔍
Previous subnet 81.100.32.0/21🔍
Next subnet 81.100.48.0/21🔍

Subnet tree

Netblock 81.0.0.0/8🔍 RIPE-CIDR-BLOCK (AU)
Route 81.96.0.0/12🔍 AS5089 NTL (GB)🔍
Netblock 81.96.0.0/12🔍 UK-NTLI-20020614 (GB)
Netblock 81.100.40.0/21🔍 VMCBBUK (GB)