diff --git a/src/rpc/blockchain.cpp b/src/rpc/blockchain.cpp
--- a/src/rpc/blockchain.cpp
+++ b/src/rpc/blockchain.cpp
@@ -2417,9 +2417,9 @@
                      {
                          {"desc", RPCArg::Type::STR, RPCArg::Optional::NO,
                           "An output descriptor"},
-                         {"range", RPCArg::Type::NUM, /* default */ "1000",
-                          "Up to what child index HD chains should be "
-                          "explored"},
+                         {"range", RPCArg::Type::RANGE, /* default */ "1000",
+                          "The range of HD chain indexes to explore (either "
+                          "end or [begin,end])"},
                      },
                  },
              },
@@ -2486,7 +2486,7 @@
         for (const UniValue &scanobject :
              request.params[1].get_array().getValues()) {
             std::string desc_str;
-            int range = 1000;
+            std::pair<int64_t, int64_t> range = {0, 1000};
             if (scanobject.isStr()) {
                 desc_str = scanobject.get_str();
             } else if (scanobject.isObject()) {
@@ -2499,8 +2499,9 @@
                 desc_str = desc_uni.get_str();
                 UniValue range_uni = find_value(scanobject, "range");
                 if (!range_uni.isNull()) {
-                    range = range_uni.get_int();
-                    if (range < 0 || range > 1000000) {
+                    range = ParseRange(range_uni);
+                    if (range.first < 0 || (range.second >> 31) != 0 ||
+                        range.second >= range.first + 1000000) {
                         throw JSONRPCError(RPC_INVALID_PARAMETER,
                                            "range out of range");
                     }
@@ -2519,9 +2520,10 @@
                     strprintf("Invalid descriptor '%s'", desc_str));
             }
             if (!desc->IsRange()) {
-                range = 0;
+                range.first = 0;
+                range.second = 0;
             }
-            for (int i = 0; i <= range; ++i) {
+            for (int i = range.first; i <= range.second; ++i) {
                 std::vector<CScript> scripts;
                 if (!desc->Expand(i, provider, scripts, provider)) {
                     throw JSONRPCError(
diff --git a/test/functional/rpc_scantxoutset.py b/test/functional/rpc_scantxoutset.py
--- a/test/functional/rpc_scantxoutset.py
+++ b/test/functional/rpc_scantxoutset.py
@@ -143,6 +143,16 @@
                      {"desc": "combo(tpubD6NzVbkrYhZ4WaWSyoBvQwbpLkojyoTZPRsgXELWz3Popb3qkjcJyJUGLnL4qHHoQvao8ESaAstxYSnhyswJ76uZPStJRJCTKvosUCJZL5B/1/1/*)", "range": 1499}])['total_amount'], Decimal("12.288"))
         assert_equal(self.nodes[0].scantxoutset("start", [
                      {"desc": "combo(tpubD6NzVbkrYhZ4WaWSyoBvQwbpLkojyoTZPRsgXELWz3Popb3qkjcJyJUGLnL4qHHoQvao8ESaAstxYSnhyswJ76uZPStJRJCTKvosUCJZL5B/1/1/*)", "range": 1500}])['total_amount'], Decimal("28.672"))
+        assert_equal(
+            self.nodes[0].scantxoutset(
+                "start",
+                [
+                    {
+                        "desc": "combo(tpubD6NzVbkrYhZ4WaWSyoBvQwbpLkojyoTZPRsgXELWz3Popb3qkjcJyJUGLnL4qHHoQvao8ESaAstxYSnhyswJ76uZPStJRJCTKvosUCJZL5B/1/1/*)",
+                        "range": [
+                            1500,
+                            1500]}])['total_amount'],
+            Decimal("16.384"))
 
         # Test the reported descriptors for a few matches
         assert_equal(descriptors(self.nodes[0].scantxoutset("start",