a) In DHCP console, locate the DHCP scopes that the computer with static IP address may belongs to.
b) Right click on the “Address leases”, click export list.

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c) Type a name for the exported list, select csv format, click save.
d) Open the exported file with MS excel, filter out the active lease.
e) Now we get the whole IP address of DHCP lease.

Reference:
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How to use the Netsh utility to export and import DHCP scopes
http://support.microsoft.com/kb/281626/en-us