With IPHost Network Monitor you can run simple snmp requests against a F5 Network device in your network.
lbDomainPoolReturnsToDns
lb Domain Pool Returns To Dns
1.3.6.1.4.1.3375.1.2.1.1.6.4.1.16
The number of times the pool has been resolved using standard DNS.
Back to F5-3DNS-MIB MIB page.
IPHost Network monitor allows you to monitor lbDomainPoolReturnsToDns on F5 Network device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring F5 Network routers right now.