Find all past desktop IP addresses

Solution 1:

Interesting question...

At the very least, the DHCP server should log all the addresses it hands out, if logging is enabled.

Im looking to see if its logged on the client side anywhere, but Im not seeing anything.

Solution 2:

The Windows DHCP Client service can log this, if you have the Operational log enabled. Some say it is enabled by default, but my limited testing shows otherwise.

This won't help you in the past but it can going forward.

You can enable it in Event Viewer -> Applications and Services -> Microsoft -> Windows -> DHCP Client and enable the Operational log.

After enabling the log "Event viewer --> windows system logs -->filter current log" and choose "dhcp-client" under Event Sources.