With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
alAddressStatsHeldTable
Address Statistics Held Table
1.3.6.1.4.1.3076.2.1.2.19.4
The list of held IP addresses in the Base group. The IP addresses in this table are not available for use. When an IP address is released from use and if the re-use delay feature is enabled, the IP address is added into this table for a configured time period before it can be used again. An IP address that was discovered to be used by an external device is also added into this table for configured time period also. When the timer expires, the IP address is removed from this table.
Back to ALTIGA-ADDRESS-STATS-MIB MIB page.
IPHost Network monitor allows you to monitor alAddressStatsHeldTable on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.