online CIDR and IP subnet calculator : Check host

91.121.86.0-91.121.86.63
91.121.86.0/26

91.121.86.64-91.121.86.79
91.121.86.64/28

91.121.86.80-91.121.86.87
91.121.86.80/29

91.121.86.88-91.121.86.89
91.121.86.88/31

91.121.86.90-91.121.86.90
91.121.86.90/32

91.121.64.0-91.121.79.255
91.121.64.0/20

91.121.80.0-91.121.83.255
91.121.80.0/22

91.121.84.0-91.121.85.255
91.121.84.0/23

IP subnet calculator 91.121.64.0-91.121.86.90