Dialler shows new numbers

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http://androidforums.com – I have a strange issue. When I press numbers in my dialler, it shows x contacts to the right with suggestions of contacts having similar sequence of numbers. The last one among the list is a number without any contact name. I dont have it in any of my Contact lists (phone/SIM/gmail) nor in recently dialled list. Its annoying as I dont know where this number is stored in my phone. I didnt try with many combinations, but, I see that one is my present number (shows with and without contact names) and other is my 'self' number which I have used long back (different SIM card) in my phone, bu (General)