With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cnatConfDynAddrMapName
cnat Config Dyn Address Map Name
1.3.6.1.4.1.9.10.77.1.1.3.1.1
An arbitrary, but unique identifier associated with this cnatConfDynAddrMapEntry. The value of this object is unique across both the static address map and the dynamic address map tables.
Back to CISCO-IETF-NAT-MIB MIB page.
IPHost Network monitor allows you to monitor cnatConfDynAddrMapName on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.