diff --git a/check_rate_custom_ranking_counter.go b/check_rate_custom_ranking_counter.go
new file mode 100644
index 0000000..eec8d15
--- /dev/null
+++ b/check_rate_custom_ranking_counter.go
@@ -0,0 +1,44 @@
+package main
+
+import (
+	"fmt"
+
+	nex "github.com/PretendoNetwork/nex-go"
+	nexproto "github.com/PretendoNetwork/nex-protocols-go"
+)
+
+func checkRateCustomRankingCounter(err error, client *nex.Client, callID uint32, applicationID uint32) {
+
+	var isBelowThreshold uint8
+
+	switch applicationID {
+	case 0: // Unknown?
+		isBelowThreshold = 1
+	default:
+		fmt.Printf("[Warning] DataStoreSMMProtocol::CheckRateCustomRankingCounter Unsupported applicationID: %v\n", applicationID)
+	}
+
+	rmcResponseStream := nex.NewStreamOut(nexServer)
+
+	rmcResponseStream.WriteUInt8(isBelowThreshold)
+
+	rmcResponseBody := rmcResponseStream.Bytes()
+
+	rmcResponse := nex.NewRMCResponse(nexproto.DataStoreSMMProtocolID, callID)
+	rmcResponse.SetSuccess(nexproto.DataStoreSMMMethodCheckRateCustomRankingCounter, rmcResponseBody)
+
+	rmcResponseBytes := rmcResponse.Bytes()
+
+	responsePacket, _ := nex.NewPacketV1(client, nil)
+
+	responsePacket.SetVersion(1)
+	responsePacket.SetSource(0xA1)
+	responsePacket.SetDestination(0xAF)
+	responsePacket.SetType(nex.DataPacket)
+	responsePacket.SetPayload(rmcResponseBytes)
+
+	responsePacket.AddFlag(nex.FlagNeedsAck)
+	responsePacket.AddFlag(nex.FlagReliable)
+
+	nexServer.Send(responsePacket)
+}
diff --git a/main.go b/main.go
index d1e8776..1dcc749 100644
--- a/main.go
+++ b/main.go
@@ -82,6 +82,7 @@ func main() {
 	dataStoreSmmServer.GetCourseRecord(getCourseRecord)
 	dataStoreSmmServer.GetApplicationConfigString(getApplicationConfigString)
 	dataStoreSmmServer.GetMetasWithCourseRecord(getMetasWithCourseRecord)
+	dataStoreSmmServer.CheckRateCustomRankingCounter(checkRateCustomRankingCounter)
 	dataStoreSmmServer.CTRPickUpCourseSearchObject(ctrPickUpCourseSearchObject)
 
 	messageDeliveryServer.DeliverMessage(deliverMessage)