I've just checked my IP addresses on Web Apps (Link for Web Apps mods and developers):
and a couple show up as being used once but the weird thing is they resolve to South Africa - somewhere I've never been.
Is this someone trying to hack my account or just an artefact of the way the internet routes data. There's no data information on when these IPs were first and/or last used so I don't know whether this is a recent thing or not.
The dns lookups resolve to Durban and Johannesburg and the names end in "dsl.mweb.co.za" implying (I think) that they are end user addresses.
The IP cross reference table shows some interesting things also:
Other users, who live in completely different continents appear to share the same IP addresses as me when I know that I have a static IP at home and I assume the company where I work does too.