online CIDR and IP subnet calculator : Check host

142.251.31.99-142.251.31.99
142.251.31.99/32

142.251.31.100-142.251.31.103
142.251.31.100/30

142.251.31.104-142.251.31.111
142.251.31.104/29

142.251.31.112-142.251.31.127
142.251.31.112/28

142.251.31.128-142.251.31.143
142.251.31.128/28

142.251.31.144-142.251.31.145
142.251.31.144/31

142.251.31.146-142.251.31.146
142.251.31.146/32

IP subnet calculator 142.251.31.99-142.251.31.146