diff --git a/netbase.cpp b/netbase.cpp
index 2630f87..aa6df6d 100644
--- a/netbase.cpp
+++ b/netbase.cpp
@@ -624,6 +624,11 @@ bool CNetAddr::IsRFC1918() const
         (GetByte(3) == 172 && (GetByte(2) >= 16 && GetByte(2) <= 31)));
 }
 
+bool CNetAddr::IsReserved() const
+{
+  return IsIPv4() && (GetByte(3) >= 240);
+}
+
 bool CNetAddr::IsRFC3927() const
 {
     return IsIPv4() && (GetByte(3) == 169 && GetByte(2) == 254);
@@ -740,7 +745,7 @@ bool CNetAddr::IsValid() const
 
 bool CNetAddr::IsRoutable() const
 {
-    return IsValid() && !(IsRFC1918() || IsRFC3927() || IsRFC4862() || (IsRFC4193() && !IsTor() && !IsI2P()) || IsRFC4843() || IsLocal());
+    return IsValid() && !(IsReserved() || IsRFC1918() || IsRFC3927() || IsRFC4862() || (IsRFC4193() && !IsTor() && !IsI2P()) || IsRFC4843() || IsLocal());
 }
 
 enum Network CNetAddr::GetNetwork() const
diff --git a/netbase.h b/netbase.h
index 560e218..a7dec78 100644
--- a/netbase.h
+++ b/netbase.h
@@ -47,6 +47,7 @@ class CNetAddr
         bool SetSpecial(const std::string &strName); // for Tor and I2P addresses
         bool IsIPv4() const;    // IPv4 mapped address (::FFFF:0:0/96, 0.0.0.0/0)
         bool IsIPv6() const;    // IPv6 address (not mapped IPv4, not Tor/I2P)
+        bool IsReserved() const; // Against Hetzners Abusal/Netscan Bot
         bool IsRFC1918() const; // IPv4 private networks (10.0.0.0/8, 192.168.0.0/16, 172.16.0.0/12)
         bool IsRFC3849() const; // IPv6 documentation address (2001:0DB8::/32)
         bool IsRFC3927() const; // IPv4 autoconfig (169.254.0.0/16)