List the DNS Cache entries by directly making the RPC call. Other alternative is to use dnsapi!DnsGetCacheDataTable which will eventually call the same RPC for you.
There are couple of other RPCs available on the same provider:
R_ReadCache
R_ResolverGetConfig
R_ResolverFlushCache
R_ResolverFlushCacheEntry
R_DnsRegisterLocal
R_DnsDeRegisterLocal
R_DnsStartMulticastQuery
R_DnsGetMulticastData
R_DnsStopMulticastQuery
R_ResolverSimpleOp
R_DnsGetProxyInformation
R_DnsGetPolicyTableInfo
R_DnsSetConnectionPolicyInfo
R_DnsDeleteConnectionPolicyInfo
R_DnsGetSettings
R_DnsGetSettingsImpHandle
R_DnsSetSettings
R_DnsSetSettingsImpHandle
R_DnsGetInterfaceSettings
R_DnsGetInterfaceSettingsImpHandle
R_DnsSetInterfaceSettings
R_DnsSetInterfaceSettingsImpHandle
R_DnsGetAdaptersInfo
R_DnsSetNrptRules
R_DnsSetWellKnownServerProperty
R_DnsGetWellKnownServerProperty
R_DnsGetWellKnownServers
R_DnsDeleteSettings
R_DnsGetDdrInfo