At times, you might want the DHCP service to stop managing a particular IP address or group of addresses. The method that you use to remove an address from DHCP depends on whether you want the change to be temporary or permanent.
To temporarily prevent the use of addresses, you can mark the addresses as unusable in the Address Properties dialog box as described in Marking IP Addresses as Unusable by the DHCP Service.
To permanently prevent the use of addresses by DHCP clients, delete the addresses from the DHCP network tables, as described in Deleting IP Addresses From the DHCP Service.