I have used my Google Voice account to forward calls to my U.S. number on the EKIT SIM. In fact that's how I learned I lost my first EKIT U.S. number.

I got a message from Google telling me that my EKIT phone number had been re-assigned to someone else. Upon researching this with EKIT, that's how I learned about the 4 month rule.

I have Californian +1-323-275-9XXX (Hollywood?), so I think 0,50$ is ok for such good number.

Sorry to dissapoint
 

Sorry to dissapoint, but the 323-275-xxxx would just be considered 'Los Angeles. The 323 are code is the 'doughnut' around the 213 'doughnut hole'.

But the good news is that Hollywood IS in the 323, being a part of Los Angeles. And the way the prefixes ['275'] are allocated it could be anywhere in the parts of Los Angeles that is 323.

So if you want to say 'Hollywood' it would be hard to say it is not Hollywood. Does your SIM have a UK number or just the 323 number? I have one that just has the 323 number [and another that has the 213 number.]

Thank you for the explanation. Another number on this simcard is +447924422XXX.

That would be Isle of Man, UK. Home of the Manx Cat. It's listed as "mobile phones additional capacity" in this link: Telephone numbers in the United Kingdom - Wikipedia, the free encyclopedia but I'm not sure what mobile phone carrier represents that number pool (guessing might be Cloud Nine or Manx Telecom, but someone might know the answer).

More info.
 

If you go to: Innternational number plans
you will find:+44879244XXXXX mobile Manx Telecom

If you try to search the US number it will be over 14,000 pages and no way to skip very far.

Also, at
SIM card information
you can stick in SIM card numbers and see who they really are for.

And as a useful bonus:
NANP Administration System you will be able to look up your prefix of an american phone number.
This is the kind of stuff that amuses those of us here.