With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
natSessionPublicAddrType
nat Session Public Addr Type
1.3.6.1.2.1.123.1.9.1.15
This object specifies the address type used for natSessionPublicSrcAddr and natSessionPublicDstAddr.
Back to NAT-MIB MIB page.
IPHost Network monitor allows you to monitor natSessionPublicAddrType 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.