With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cghMonNsQueryDomainName
Cisco GSLB Health Monitor Ns Query Domain Name
1.3.6.1.4.1.9.9.600.1.3.1
This object specifies the default doman name for a keepalive identified by cghMonKalMethod value of 'ns'.
Back to CISCO-GSLB-HEALTH-MON-MIB MIB page.
IPHost Network monitor allows you to monitor cghMonNsQueryDomainName 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.