CIDRFromIP.com

Convert IPs to CIDRs
Convert CIDR to IPs
Search for IP in a CIDR

Convert CIDR to IP Addresses

Enter an IPV4 CIDR (example: 192.168.2.0/24)

IP Address Range for 172.21.124.58/20
First IP Address in Range: 172.21.112.0
Last IP Address in Range: 172.21.140.57
Number of IP addresses: 7225

Convert IP Addresses to CIDRs | Convert CIDR to IP Addresses | Search for IP Addresses in a CIDR