Try using a real and verified post code and it'll work fine.
If you've moved into a house built recently it won't show on any databases. This postcode doesn't exist, so it's not suprising it won't work
If you want to check your postcode there are several sites that will do it
In the UK, the definitive database is <A target="_blank" HREF=http://www.royalmail.co.uk>http://www.royalmail.co.uk</A>. You can use postcode finder or address finder.
Not quite Peru. It's a valid British postcode. I won't be too surprised to see a little plane zooming up and down taking snaps now I've let the cat out of the bag