Can anyone help me find RB858858151CN?

Trying to track it I find this:
RB858858151CN Collection Quanzhou GR Sat, 21 Sep 2013 18:30:00 GMT
RB858858151CN Opening Xiamen GR Sun, 22 Sep 2013 15:44:00 GMT
RB858858151CN Dispatching Xiamen GR Sun, 22 Sep 2013 16:35:00 GMT
RB858858151CN Departure from outward office of exchange Beijing GR Wed, 25 Sep 2013 09:51:00 GMT
RB858858151CN Opening Beijing GR Wed, 25 Sep 2013 17:47:00 GMT
RB858858151CN Opening Beijing GR Wed, 16 Oct 2013 08:41:00 GMT
RB858858151CN Dispatching Beijing GR Wed, 16 Oct 2013 15:32:00 GMT
RB858858151CN Opening Xiamen GR Mon, 21 Oct 2013 07:54:00 GMT
RB858858151CN Dispatching Xiamen GR Mon, 21 Oct 2013 08:34:00 GMT

I haven't had an update since 21-10-2013 and it is 30/11!!! I try the local port office and they give me the same information.
Could it be lost? Is so much time usual? What does null mean?