With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
agentDhcpScopeNetmask
agent Dhcp Scope Netmask
1.3.6.1.4.1.14179.1.2.15.1.1.5
The DHCP Scope Netmask. This the subnet mask for the address pool.
Back to AIRESPACE-SWITCHING-MIB MIB page.
IPHost Network monitor allows you to monitor agentDhcpScopeNetmask on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.