Technically it's an IEC-C7
International Electrotechnical Commission sets the standards, hence IEC.
If you're interested you can go here and see the different plugs (at the wall end around the world):
Then click on each to see where it's used (We are Type I here in Australia).
For the other end of most household stuff you can read up on here:
Did you know the duck head off your MacBook charger (or early iPhone charger) is just a C7 plug so you can use it on a battery charger or other AC adaptor that uses that type (maybe an issue of it being rigid and all, but in a pinch.
Also, you can use a standard C7 cable if you're missing a duckhead for your MacBook (or old iPhone charger). Usually you can find one floating around if you're in a foreign country and as long as your adaptor will accept the local voltage (which most decent electronics do these days) you can plug it in.
...all the things you never knew you wanted to know!...