diff --git a/order/rpc_parse.go b/order/rpc_parse.go
index 27b5e32..d36bd5b 100644
--- a/order/rpc_parse.go
+++ b/order/rpc_parse.go
@@ -127,23 +127,19 @@ func ParseRPCOrder(version, leaseDuration uint32,
 			"at the same time")
 	}
 
-	kit.AllowedNodeIDs = make([][33]byte, len(details.AllowedNodeIds))
-	for idx, nodeID := range details.AllowedNodeIds {
-		if _, err := btcec.ParsePubKey(nodeID); err != nil {
-			return nil, fmt.Errorf("invalid allowed_node_id: %x",
-				nodeID)
-		}
-		copy(kit.AllowedNodeIDs[idx][:], nodeID)
+	allowedNodeIDs, err := UnmarshalNodeIDSlice(details.AllowedNodeIds)
+	if err != nil {
+		return nil, fmt.Errorf("invalid allowed_node_ids: %v", err)
 	}
+	kit.AllowedNodeIDs = allowedNodeIDs
 
-	kit.NotAllowedNodeIDs = make([][33]byte, len(details.NotAllowedNodeIds))
-	for idx, nodeID := range details.NotAllowedNodeIds {
-		if _, err := btcec.ParsePubKey(nodeID); err != nil {
-			return nil, fmt.Errorf("invalid not_allowed_node_id: "+
-				"%x", nodeID)
-		}
-		copy(kit.NotAllowedNodeIDs[idx][:], nodeID)
+	notAllowedNodeIDs, err := UnmarshalNodeIDSlice(
+		details.NotAllowedNodeIds,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("invalid not_allowed_node_ids: %v", err)
 	}
+	kit.NotAllowedNodeIDs = notAllowedNodeIDs
 
 	kit.IsPublic = details.IsPublic
 
@@ -524,6 +520,43 @@ func ParseRPCSign(signMsg *auctioneerrpc.OrderMatchSignBegin) (AccountNonces,
 	return nonces, prevOutputs, nil
 }
 
+// MarshalNodeIDSlice returns a flattened version of an slice of node ids to be
+// used in rpc serialization.
+func MarshalNodeIDSlice(nodeIDs [][33]byte) [][]byte {
+	res := make([][]byte, 0, len(nodeIDs))
+
+	for i := range nodeIDs {
+		nodeID := make([]byte, 33)
+		copy(nodeID, nodeIDs[i][:])
+
+		res = append(res, nodeID)
+	}
+
+	return res
+}
+
+// UnmarshalNodeIDSlice returns a slice of node ids from a flatten version.
+func UnmarshalNodeIDSlice(slice [][]byte) ([][33]byte, error) {
+	nodeIDs := make([][33]byte, len(slice))
+	for idx := range slice {
+		// Check that the node id pub key is in the correct format.
+		if len(slice[idx]) != 33 {
+			return nil, fmt.Errorf("invalid node_id length: %x",
+				slice[idx])
+		}
+
+		// Check that the node id pub key is a valid key.
+		if _, err := btcec.ParsePubKey(slice[idx]); err != nil {
+			return nil, fmt.Errorf("invalid node_id: %x",
+				slice[idx])
+		}
+
+		copy(nodeIDs[idx][:], slice[idx])
+	}
+
+	return nodeIDs, nil
+}
+
 // randomPreimage creates a new preimage from a random number generator.
 func randomPreimage() ([]byte, error) {
 	var nonce Nonce
diff --git a/order/rpc_parse_test.go b/order/rpc_parse_test.go
new file mode 100644
index 0000000..aaa4e91
--- /dev/null
+++ b/order/rpc_parse_test.go
@@ -0,0 +1,94 @@
+package order
+
+import (
+	"encoding/hex"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+var nodeIDSerializationTestCases = []struct {
+	name                  string
+	nodeIDs               func() [][33]byte
+	invalidSerializedData func() [][]byte
+	expectedErr           string
+}{{
+	name: "empty slice",
+	nodeIDs: func() [][33]byte {
+		return [][33]byte{}
+	},
+}, {
+	name: "single node id",
+	nodeIDs: func() [][33]byte {
+		return [][33]byte{
+			nodePubkey,
+		}
+	},
+}, {
+	name: "multiple node ids",
+	nodeIDs: func() [][33]byte {
+		nodeID, _ := hex.DecodeString("036b51e0cc2d9e5988ee4967e0ba67" +
+			"ef3727bb633fea21a0af58e0c9395446ba09")
+		var nodePubKey2 [33]byte
+		copy(nodePubKey2[:], nodeID)
+
+		return [][33]byte{
+			nodePubkey,
+			nodePubKey2,
+		}
+	},
+}, {
+	name: "invalid length",
+	invalidSerializedData: func() [][]byte {
+		return [][]byte{
+			{1, 2},
+		}
+	},
+	expectedErr: "invalid node_id length",
+}, {
+	name: "invalid pub key",
+	invalidSerializedData: func() [][]byte {
+		return MarshalNodeIDSlice([][33]byte{
+			{1, 2},
+		})
+	},
+	expectedErr: "invalid node_id:",
+}}
+
+// TestNodeIDSliceSerialization tests that we can properly serialize and
+// deserialize a slice of node ids.
+func TestNodeIDSliceSerialization(t *testing.T) {
+	for _, tc := range nodeIDSerializationTestCases {
+		tc := tc
+
+		t.Run(tc.name, func(t *testing.T) {
+			t.Parallel()
+
+			switch {
+			// Marshal and Unmarshal valid node ids.
+			case tc.nodeIDs != nil:
+				nodeIDs := tc.nodeIDs()
+				marshaled := MarshalNodeIDSlice(nodeIDs)
+				require.Equal(t, len(nodeIDs), len(marshaled))
+
+				unmarshaled, err := UnmarshalNodeIDSlice(
+					marshaled,
+				)
+
+				require.NoError(t, err)
+				require.Equal(t, tc.nodeIDs(), unmarshaled)
+
+			// Unmarshal invalid marshaled node ids.
+			case tc.invalidSerializedData != nil:
+				marshaled := tc.invalidSerializedData()
+
+				_, err := UnmarshalNodeIDSlice(marshaled)
+				require.Error(t, err)
+				require.Contains(t, err.Error(), tc.expectedErr)
+
+			default:
+				require.Fail(t, "invalid test case")
+			}
+		})
+	}
+}
diff --git a/rpcserver.go b/rpcserver.go
index cd07460..146f02a 100644
--- a/rpcserver.go
+++ b/rpcserver.go
@@ -1700,6 +1700,14 @@ func (s *rpcServer) ListOrders(ctx context.Context,
 			}
 		}
 
+		allowedNodeIDs := order.MarshalNodeIDSlice(
+			dbOrder.Details().AllowedNodeIDs,
+		)
+
+		notAllowedNodeIDs := order.MarshalNodeIDSlice(
+			dbOrder.Details().NotAllowedNodeIDs,
+		)
+
 		details := &poolrpc.Order{
 			TraderKey: dbDetails.AcctKey[:],
 			RateFixed: dbDetails.FixedRate,
@@ -1723,7 +1731,9 @@ func (s *rpcServer) ListOrders(ctx context.Context,
 			AuctionType: auctioneerrpc.AuctionType(
 				dbOrder.Details().AuctionType,
 			),
-			IsPublic: dbOrder.Details().IsPublic,
+			AllowedNodeIds:    allowedNodeIDs,
+			NotAllowedNodeIds: notAllowedNodeIDs,
+			IsPublic:          dbOrder.Details().IsPublic,
 		}
 
 		switch o := dbOrder.(type) {
@@ -1780,8 +1790,7 @@ func (s *rpcServer) ListOrders(ctx context.Context,
 			bids = append(bids, rpcBid)
 
 		default:
-			return nil, fmt.Errorf("unknown order type: %v",
-				o)
+			return nil, fmt.Errorf("unknown order type: %v", o)
 		}
 	}
 	return &poolrpc.ListOrdersResponse{