With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cDhcpv4ServerRangeStartAddress
Cisco Dynamic Host Configuration protocol Server Range Start Address
1.3.6.1.4.1.9.10.102.1.4.3.1.1
The IPv4 address of the first address in the range. The value of cDhcpv4ServerRangeStartAddress MUST be less than or equal to the value of cDhcpv4ServerRangeEndAddress.
Back to CISCO-IETF-DHCP-SERVER-MIB MIB page.
IPHost Network monitor allows you to monitor cDhcpv4ServerRangeStartAddress 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.