I am new to amateur radio. I passed the technician exam last night with a perfect score. (Dodged that q about iambic pentameter.) Obviously, I have not gotten my call sign yet, but I am thinking about creating my own. Can one request a vanity call sign with a number outside of one's own region, or does the number have to match the region? I don't care which number is in the call sign, but of course being able to use more numbers means more choices.