DHCP address lease to an unknown device with .dcn after its name

I was looking through my DHCP leases and see all of our company computers however there is now an unknown device which I do not recognize.  All other computers have computername.ourdomain.com.  This one is named device2013.wvnd.circ4.dcn and I can ping to it.  Anyone know what this might be.  Just want to make sure no one has gotten into our system. Thanks
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To my knowledge, it could be really anything. From a switch to a mobile phone. From a ip phone to a tablet. From a printer to anything else. The only way for sure is to trace the device physically (or if it's a wireless device, to the access point where it connects to).
Please note, the MAC address can be of some use too (sometimes it will tell you SAMSUNG or CISCO, after a table look up obviously, but then you will know easier if it's a phone or a switch of some sorts)

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Mike-LFCAuthor Commented:
Thanks for the info.  Will track it down.
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