Which immigration offices can extend an SETV for 30 days in Thailand, specifically in Ayutthaya?

I've looked for awhile...does anyone have a list of immigration offices *that you can extend an SETV for 30 days*? I've found one list, but the internet refused to translate it into English for me. In particular I'm trying to see if this can be done in Ayutthaya. ((I'm flying into Thailand on the 3rd, just trying to get my ducks lined up before I get there!)))