online CIDR and IP subnet calculator : Check host

200.87.0.0-200.87.127.255
200.87.0.0/17

200.87.128.0-200.87.191.255
200.87.128.0/18

200.87.192.0-200.87.223.255
200.87.192.0/19

200.87.224.0-200.87.239.255
200.87.224.0/20

200.87.240.0-200.87.247.255
200.87.240.0/21

200.87.248.0-200.87.251.255
200.87.248.0/22

200.87.252.0-200.87.252.255
200.87.252.0/24

IP subnet calculator 200.87.0.0-200.87.252.255