diff --git a/tools/network.hpp b/tools/network.hpp
new file mode 100644
index 0000000..d2d3cfe
--- /dev/null
+++ b/tools/network.hpp
@@ -0,0 +1,143 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (C) 2014 Named Data Networking Project
+ * See COPYING for copyright and distribution information.
+ */
+
+#ifndef NFD_TOOLS_NETWORK_HPP
+#define NFD_TOOLS_NETWORK_HPP
+
+#include <boost/asio.hpp>
+
+class Network
+{
+public:
+  Network()
+  {
+  }
+
+  Network(const boost::asio::ip::address& minAddress,
+          const boost::asio::ip::address& maxAddress)
+    : m_minAddress(minAddress)
+    , m_maxAddress(maxAddress)
+  {
+  }
+
+  void
+  print(std::ostream& os) const
+  {
+    os << m_minAddress << " <-> " << m_maxAddress;
+  }
+
+  bool
+  doesContain(const boost::asio::ip::address& address) const
+  {
+    return (m_minAddress <= address && address <= m_maxAddress);
+  }
+
+  static const Network&
+  getMaxRangeV4()
+  {
+    using boost::asio::ip::address_v4;
+    static Network range = Network(address_v4(0), address_v4(0xFFFFFFFF));
+    return range;
+  }
+
+  static const Network&
+  getMaxRangeV6()
+  {
+    using boost::asio::ip::address_v6;
+    static address_v6::bytes_type maxV6 = {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                                            0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}};
+    static Network range = Network(address_v6(), address_v6(maxV6));
+    return range;
+  }
+
+private:
+  boost::asio::ip::address m_minAddress;
+  boost::asio::ip::address m_maxAddress;
+
+  friend std::istream&
+  operator>>(std::istream& is, Network& network);
+
+  friend std::ostream&
+  operator<<(std::ostream& os, const Network& network);
+};
+
+inline std::ostream&
+operator<<(std::ostream& os, const Network& network)
+{
+  network.print(os);
+  return os;
+}
+
+inline std::istream&
+operator>>(std::istream& is, Network& network)
+{
+  using namespace boost::asio;
+
+  std::string networkStr;
+  is >> networkStr;
+
+  size_t position = networkStr.find('/');
+  if (position == std::string::npos)
+    {
+      network.m_minAddress = ip::address::from_string(networkStr);
+      network.m_maxAddress = ip::address::from_string(networkStr);
+    }
+  else
+    {
+      ip::address address = ip::address::from_string(networkStr.substr(0, position));
+      size_t mask = boost::lexical_cast<size_t>(networkStr.substr(position+1));
+
+      if (address.is_v4())
+        {
+          ip::address_v4::bytes_type maskBytes = {};
+          for (size_t i = 0; i < mask; i++)
+            {
+              size_t byteId = i / 8;
+              size_t bitIndex = 7 - i % 8;
+              maskBytes[byteId] |= (1 << bitIndex);
+            }
+
+          ip::address_v4::bytes_type addressBytes = address.to_v4().to_bytes();
+          ip::address_v4::bytes_type min;
+          ip::address_v4::bytes_type max;
+
+          for (size_t i = 0; i < addressBytes.size(); i++)
+            {
+              min[i] = addressBytes[i] & maskBytes[i];
+              max[i] = addressBytes[i] | ~(maskBytes[i]);
+            }
+
+          network.m_minAddress = ip::address_v4(min);
+          network.m_maxAddress = ip::address_v4(max);
+        }
+      else
+        {
+          ip::address_v6::bytes_type maskBytes = {};
+          for (size_t i = 0; i < mask; i++)
+            {
+              size_t byteId = i / 8;
+              size_t bitIndex = 7 - i % 8;
+              maskBytes[byteId] |= (1 << bitIndex);
+            }
+
+          ip::address_v6::bytes_type addressBytes = address.to_v6().to_bytes();
+          ip::address_v6::bytes_type min;
+          ip::address_v6::bytes_type max;
+
+          for (size_t i = 0; i < addressBytes.size(); i++)
+            {
+              min[i] = addressBytes[i] & maskBytes[i];
+              max[i] = addressBytes[i] | ~(maskBytes[i]);
+            }
+
+          network.m_minAddress = ip::address_v6(min);
+          network.m_maxAddress = ip::address_v6(max);
+        }
+    }
+  return is;
+}
+
+#endif // NFD_TOOLS_NETWORK_HPP