I have my network with my own public ip addresses. The range is /20 and my AS (autonomous system number) is 50091. Now i need to split my network in many small networks in different cities, perhaps /24. I need to know if i need an unique AS for each network?

Hi All

I have an AS 500xy with /20 ip's. Now i need to split my network in many /24 in different cities around my country. Do I need an AS per each ?

Thank you.

I do this all same in my network, but when i use srcnat instead of masquerading the internet stops working.
Any help ??