That is actually not my IP.
You're right, it could be a proxy, corporate VPN, personal VPN, rented VPS running a VPN server, could be a Cisco L2TP, OpenPPTP, you could be at work, you could be at school, college, I don't know, or care quite frankly. For all I care it could be a $50,000 free space optic link going to a house/business down the road. All I know is you have used this IP while connecting to our servers under wertel, and you did it under my name. Enough said.