With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cGgsnExtSubscriberAPN
cisco Gateway GPRS Support Node Ext Subscriber APN
1.3.6.1.4.1.9.9.647.1.1.18.1.8
This object indicates a human readable string representing the access point name in GGSN to which the subscriber is connected.
Back to CISCO-GGSN-EXT-MIB MIB page.
IPHost Network monitor allows you to monitor cGgsnExtSubscriberAPN on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.