[daniel@hewlett-purrp ~]$ sipcalc 73.39.59.22/23
-[ipv4 : 73.39.59.22/23] - 0

[CIDR]
Host address        - 73.39.59.22
Host address (decimal)  - 1227307798
Host address (hex)  - 49273B16
Network address     - 73.39.58.0
Network mask        - 255.255.254.0
Network mask (bits) - 23
Network mask (hex)  - FFFFFE00
Broadcast address   - 73.39.59.255
Cisco wildcard      - 0.0.1.255
Addresses in network    - 512
Network range       - 73.39.58.0 - 73.39.59.255
Usable range        - 73.39.58.1 - 73.39.59.254