It is a bit of a weird item as it is not the classical crackle technique. To me it looks as if the pontil mark has been melted out with a blowtorch, a technique much used in countries where energy is cheap and grinding expensive. You see this a lot in Chinese glass.
I think the hot glass has been shaped in a cold mould, hence the strange uneven surface. You did not mention the size of this beast. I assume it is a vase not a longdrink glass?