DHCP server query/debug tool?

Does anyone know of a decent command-line tool that can be used to query a specified DHCP server?

IPNetMonitorX offers this feature, but it is a commercial product, and uses a GUI. ipconfig displays only information about the lease issued by a DHCP server and in use by a particular interface. Likewise, dhcpdump only reports the DHCP data of the lease the client has already received and is using.

I seek a command-line tool that can be used to query a specific DHCP server (if possible, one on a different subnet), and dump the lease info.

Thanks in advance for any suggestions.