diff --git a/fairmq/FairMQUnmanagedRegion.h b/fairmq/FairMQUnmanagedRegion.h
index d3fe316f..21b27b19 100644
--- a/fairmq/FairMQUnmanagedRegion.h
+++ b/fairmq/FairMQUnmanagedRegion.h
@@ -59,6 +59,7 @@ class FairMQUnmanagedRegion
 
     virtual void* GetData() const = 0;
     virtual size_t GetSize() const = 0;
+    virtual uint64_t GetId() const = 0;
 
     FairMQTransportFactory* GetTransport() { return fTransport; }
     void SetTransport(FairMQTransportFactory* transport) { fTransport = transport; }
diff --git a/fairmq/nanomsg/FairMQTransportFactoryNN.cxx b/fairmq/nanomsg/FairMQTransportFactoryNN.cxx
index 6eb53966..7b706313 100644
--- a/fairmq/nanomsg/FairMQTransportFactoryNN.cxx
+++ b/fairmq/nanomsg/FairMQTransportFactoryNN.cxx
@@ -19,6 +19,7 @@ fair::mq::Transport FairMQTransportFactoryNN::fTransportType = fair::mq::Transpo
 
 FairMQTransportFactoryNN::FairMQTransportFactoryNN(const string& id, const fair::mq::ProgOptions* /*config*/)
     : FairMQTransportFactory(id)
+    , fRegionCounter(0)
 {
     LOG(debug) << "Transport: Using nanomsg library";
 }
@@ -67,7 +68,7 @@ FairMQPollerPtr FairMQTransportFactoryNN::CreatePoller(const unordered_map<strin
 
 FairMQUnmanagedRegionPtr FairMQTransportFactoryNN::CreateUnmanagedRegion(const size_t size, FairMQRegionCallback callback, const std::string& path /* = "" */, int flags /* = 0 */)
 {
-    return unique_ptr<FairMQUnmanagedRegion>(new FairMQUnmanagedRegionNN(size, callback, path, flags, this));
+    return unique_ptr<FairMQUnmanagedRegion>(new FairMQUnmanagedRegionNN(++fRegionCounter, size, callback, path, flags, this));
 }
 
 FairMQUnmanagedRegionPtr FairMQTransportFactoryNN::CreateUnmanagedRegion(const size_t size, const int64_t userFlags, FairMQRegionCallback callback, const std::string& path /* = "" */, int flags /* = 0 */)
diff --git a/fairmq/nanomsg/FairMQTransportFactoryNN.h b/fairmq/nanomsg/FairMQTransportFactoryNN.h
index af7b2f5a..a0fe995f 100644
--- a/fairmq/nanomsg/FairMQTransportFactoryNN.h
+++ b/fairmq/nanomsg/FairMQTransportFactoryNN.h
@@ -52,6 +52,7 @@ class FairMQTransportFactoryNN final : public FairMQTransportFactory
 
   private:
     static fair::mq::Transport fTransportType;
+    uint64_t fRegionCounter;
     mutable std::vector<FairMQSocket*> fSockets;
 };
 
diff --git a/fairmq/nanomsg/FairMQUnmanagedRegionNN.cxx b/fairmq/nanomsg/FairMQUnmanagedRegionNN.cxx
index 638f0646..95c9fb6a 100644
--- a/fairmq/nanomsg/FairMQUnmanagedRegionNN.cxx
+++ b/fairmq/nanomsg/FairMQUnmanagedRegionNN.cxx
@@ -11,16 +11,18 @@
 
 using namespace std;
 
-FairMQUnmanagedRegionNN::FairMQUnmanagedRegionNN(const size_t size, FairMQRegionCallback callback, const std::string& /*path = "" */, int /*flags = 0 */, FairMQTransportFactory* factory /* = nullptr */)
+FairMQUnmanagedRegionNN::FairMQUnmanagedRegionNN(uint64_t id, const size_t size, FairMQRegionCallback callback, const std::string& /*path = "" */, int /*flags = 0 */, FairMQTransportFactory* factory /* = nullptr */)
     : FairMQUnmanagedRegion(factory)
+    , fId(id)
     , fBuffer(malloc(size))
     , fSize(size)
     , fCallback(callback)
 {
 }
 
-FairMQUnmanagedRegionNN::FairMQUnmanagedRegionNN(const size_t size, const int64_t /*userFlags*/, FairMQRegionCallback callback, const std::string& /*path = "" */, int /*flags = 0 */, FairMQTransportFactory* factory /* = nullptr */)
+FairMQUnmanagedRegionNN::FairMQUnmanagedRegionNN(uint64_t id, const size_t size, const int64_t /*userFlags*/, FairMQRegionCallback callback, const std::string& /*path = "" */, int /*flags = 0 */, FairMQTransportFactory* factory /* = nullptr */)
     : FairMQUnmanagedRegion(factory)
+    , fId(id)
     , fBuffer(malloc(size))
     , fSize(size)
     , fCallback(callback)
@@ -37,6 +39,12 @@ size_t FairMQUnmanagedRegionNN::GetSize() const
     return fSize;
 }
 
+uint64_t FairMQUnmanagedRegionNN::GetId() const
+{
+    return fId;
+}
+
+
 FairMQUnmanagedRegionNN::~FairMQUnmanagedRegionNN()
 {
     LOG(debug) << "destroying region";
diff --git a/fairmq/nanomsg/FairMQUnmanagedRegionNN.h b/fairmq/nanomsg/FairMQUnmanagedRegionNN.h
index 6a4ac668..ecc3d117 100644
--- a/fairmq/nanomsg/FairMQUnmanagedRegionNN.h
+++ b/fairmq/nanomsg/FairMQUnmanagedRegionNN.h
@@ -19,18 +19,20 @@ class FairMQUnmanagedRegionNN final : public FairMQUnmanagedRegion
     friend class FairMQSocketNN;
 
   public:
-    FairMQUnmanagedRegionNN(const size_t size, FairMQRegionCallback callback, const std::string& path = "", int flags = 0, FairMQTransportFactory* factory = nullptr);
-    FairMQUnmanagedRegionNN(const size_t size, const int64_t userFlags, FairMQRegionCallback callback, const std::string& path = "", int flags = 0, FairMQTransportFactory* factory = nullptr);
+    FairMQUnmanagedRegionNN(uint64_t id, const size_t size, FairMQRegionCallback callback, const std::string& path = "", int flags = 0, FairMQTransportFactory* factory = nullptr);
+    FairMQUnmanagedRegionNN(uint64_t id, const size_t size, const int64_t userFlags, FairMQRegionCallback callback, const std::string& path = "", int flags = 0, FairMQTransportFactory* factory = nullptr);
 
     FairMQUnmanagedRegionNN(const FairMQUnmanagedRegionNN&) = delete;
     FairMQUnmanagedRegionNN operator=(const FairMQUnmanagedRegionNN&) = delete;
 
-    virtual void* GetData() const override;
-    virtual size_t GetSize() const override;
+    void* GetData() const override;
+    size_t GetSize() const override;
+    uint64_t GetId() const override;
 
     virtual ~FairMQUnmanagedRegionNN();
 
   private:
+    uint64_t fId;
     void* fBuffer;
     size_t fSize;
     FairMQRegionCallback fCallback;
diff --git a/fairmq/shmem/UnmanagedRegion.h b/fairmq/shmem/UnmanagedRegion.h
index c034e9d8..cc16bbda 100644
--- a/fairmq/shmem/UnmanagedRegion.h
+++ b/fairmq/shmem/UnmanagedRegion.h
@@ -53,6 +53,7 @@ class UnmanagedRegion final : public fair::mq::UnmanagedRegion
 
     void* GetData() const override { return fRegion->get_address(); }
     size_t GetSize() const override { return fRegion->get_size(); }
+    uint64_t GetId() const override { return fRegionId; }
 
     ~UnmanagedRegion() override { fManager.RemoveRegion(fRegionId); }
 
diff --git a/fairmq/zeromq/FairMQUnmanagedRegionZMQ.h b/fairmq/zeromq/FairMQUnmanagedRegionZMQ.h
index 751f7149..c971d737 100644
--- a/fairmq/zeromq/FairMQUnmanagedRegionZMQ.h
+++ b/fairmq/zeromq/FairMQUnmanagedRegionZMQ.h
@@ -26,9 +26,9 @@ class FairMQUnmanagedRegionZMQ final : public FairMQUnmanagedRegion
     FairMQUnmanagedRegionZMQ(const FairMQUnmanagedRegionZMQ&) = delete;
     FairMQUnmanagedRegionZMQ operator=(const FairMQUnmanagedRegionZMQ&) = delete;
 
-    uint64_t GetId() const { return fId; }
     virtual void* GetData() const override;
     virtual size_t GetSize() const override;
+    uint64_t GetId() const override { return fId; }
     int64_t GetUserFlags() const { return fUserFlags; }
 
     virtual ~FairMQUnmanagedRegionZMQ();