You can also change them to any number you want.
How about your cell phone number
, or just something catchy like, 999 or .....
Of course if you join the club they will want you to use the number they give you
. But if you keep the number you pick for yourself then you will meet alot of people when you go to rallies
who belong to the numbers police
. Actually if no one has your current number you could likely have it if you ask
. There is a book every year that has a list of the numbers and who they are assigned to.