Are you good with area codes?

i'm trying to call london england from usa. what area codes do I have to put before I can dial out the actual number?Are you good with area codes?
44 country code

Dial whitout the 0

London (inner) 0207

London (outer) 0208.



Example



00-44-207-xxxxxxxx



I hope you can make the call....Are you good with area codes?
im fever good with area codes and numbers. How about u and ru area.Are you good with area codes?
011 + 44 + 20 7 + The number (inner london)



011 + 44 + 20 8 + The number (outer london)