I thought I'd mentioned this before, but I couldn't find it again, so:

A poll of my Indonesian colleagues reveals that in English they call it the at sign, and read it as at. In Indonesian they read it as at, but call it variously "a kurung" (caged or bracketed a), "a keong" (snail a), or "a kura-kura" (turtle or tortoise a).

Bingley

Bingley