With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
natAddrBindId
nat Addr Bind Id
1.3.6.1.2.1.123.1.6.1.5
This object represents a bind id that is dynamically assigned to each bind by a NAT enabled device. Each bind is represented by a bind id that is unique across both, the natAddrBindTable and the natAddrPortBindTable.
Back to NAT-MIB MIB page.
IPHost Network monitor allows you to monitor natAddrBindId 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.