With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cgprsAccPtMsAllocAddr
Cisco GPRS Access Point Ms Allocation Address
1.3.6.1.4.1.9.9.183.1.4.2
This object specifies the IP address that is assigned to the MS during PDP activation.
Back to CISCO-GPRS-ACC-PT-MIB MIB page.
IPHost Network monitor allows you to monitor cgprsAccPtMsAllocAddr 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.