With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
c3gIccId
Cisco 3G Icc Id
1.3.6.1.4.1.9.9.661.1.3.1.1.3
This object indicates the Integrated Circuit Card ID (ICCID). The ICCID is defined by the ITU-T recommendation E.118. ICCIDs are stored in the SIM cards and are also engraved or printed on the SIM card body during a process called personalization.
Back to CISCO-WAN-3G-MIB MIB page.
IPHost Network monitor allows you to monitor c3gIccId 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.