32-bit has a maximum value of 2^32 or 4,294,967,296, so the range is from 0~4,294,967,296.
It has a relatively low max value compared to the average ASIC's hashrate but miners rely on "extra nonce" (in the coinbase transaction) or any other data in the block header so that they can start the nonce from 0 again.
However, can you clear me a little bit more on "coinbase transaction" I'm still a little bit confused. Sorry for getting too inquisitive over this topic
