Octet an IPv4 subnet calculator

IP address
127.0.0.1 
01111111 00000000 00000000 00000001
Subnet mask
255.0.0.0 
11111111 00000000 00000000 00000000
Wildcard mask
0.255.255.255 
00000000 11111111 11111111 11111111
Network address
127.0.0.0 
01111111 00000000 00000000 00000000
Broadcast address
127.255.255.255 
01111111 11111111 11111111 11111111
First host address
127.0.0.1 
01111111 00000000 00000000 00000001
Last host address
127.255.255.254 
01111111 11111111 11111111 11111110
Number of hosts
16777214 
111111111111111111111110