With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
clmHostId
clm Host Id
1.3.6.1.4.1.9.9.369.1.1.1
This object contains the 'License hostid' of the local system. Its value is an opaque string, and is used to identify the local system when requesting license(s) for this system.
Back to CISCO-LICENSE-MGR-MIB MIB page.
IPHost Network monitor allows you to monitor clmHostId 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.