diff --git a/core/network.cpp b/core/network.cpp
new file mode 100644
index 0000000..b9a6c36
--- /dev/null
+++ b/core/network.cpp
@@ -0,0 +1,133 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014,  Regents of the University of California,
+ *                      Arizona Board of Regents,
+ *                      Colorado State University,
+ *                      University Pierre & Marie Curie, Sorbonne University,
+ *                      Washington University in St. Louis,
+ *                      Beijing Institute of Technology,
+ *                      The University of Memphis
+ *
+ * This file is part of NFD (Named Data Networking Forwarding Daemon).
+ * See AUTHORS.md for complete list of NFD authors and contributors.
+ *
+ * NFD is free software: you can redistribute it and/or modify it under the terms
+ * of the GNU General Public License as published by the Free Software Foundation,
+ * either version 3 of the License, or (at your option) any later version.
+ *
+ * NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+#include "network.hpp"
+
+namespace nfd {
+
+void
+Network::print(std::ostream& os) const
+{
+  os << m_minAddress << " <-> " << m_maxAddress;
+}
+
+const Network&
+Network::getMaxRangeV4()
+{
+  using boost::asio::ip::address_v4;
+  static Network range = Network(address_v4(0), address_v4(0xFFFFFFFF));
+  return range;
+}
+
+const Network&
+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;
+}
+
+//////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////
+
+std::ostream&
+operator<<(std::ostream& os, const Network& network)
+{
+  network.print(os);
+  return os;
+}
+
+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 = boost::initialized_value;
+          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 = boost::initialized_value;
+          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;
+}
+
+} // namespace nfd