@@ -299,15 +299,14 @@ bool IPAddress::is_reserved() const {
     size_t bit_count;
   };
 
-  // globally reachable addresses from reserved blocks
+  // globally reachable addresses from reserved blocks;
+  // 2001:1::2/127 combines 2001:1::2/128 and 2001:1::3/128, 2001:20::/27 combines 2001:20::/28 and 2001:30::/28
   static const Ipv6Block global_blocks[] = {
       {{0x20, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}, 128},
-      {{0x20, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}, 128},
-      {{0x20, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03}, 128},
+      {{0x20, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}, 127},
       {{0x20, 0x01, 0x00, 0x03}, 32},
       {{0x20, 0x01, 0x00, 0x04, 0x01, 0x12}, 48},
-      {{0x20, 0x01, 0x00, 0x20}, 28},
-      {{0x20, 0x01, 0x00, 0x30}, 28}};
+      {{0x20, 0x01, 0x00, 0x20}, 27}};
   for (auto &block : global_blocks) {
     if (begins_with_bits(addr, block.prefix, block.bit_count)) {
       return false;