With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
alDhcpServerStatsMaximumLeases
ALTIGA Dhcp Server Statistics Maximum Leases
1.3.6.1.4.1.3076.2.1.2.37.1.2
The number of leases that were active at any one time.
Back to ALTIGA-DHCP-SERVER-STATS-MIB MIB page.
IPHost Network monitor allows you to monitor alDhcpServerStatsMaximumLeases on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.