With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cdsBindingsHostname
CISCO DHCP SNOOPING Bindings Hostname
1.3.6.1.4.1.9.9.380.1.4.1.1.8
This object indicates the host name of the DHCP client as denoted by DHCP option 12 field. An empty string indicates absence of option 12 in DHCP packet.
Back to CISCO-DHCP-SNOOPING-MIB MIB page.
IPHost Network monitor allows you to monitor cdsBindingsHostname 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.