Originally Posted by Chris W

actually it is someone in/near neath

In order...
first part: the group of address from which it comes... i can't remember what there are, but there are different codes for registered/ unregistered, and a few pools... you may see cpc2, cpc3, cpc4 etc as fully registered ips
second part: the UBR (Universal Broadband Router)- in this case Neath 2
third part: Which cable on the UBR the person is connected two. There are 6 cables on each UBR [although sometimes not all of them are used]
fourth part: upstream channel id... 6 upstream channels on each cable... (or is it 7 )
next part: customer number... not related to anything at all... just a number
last part... self explanatory

btw just out of interest, why do you want to know??