The internet domain name gay.xxx has been sold for half a million dollars.

Although the .xxx extension is not yet open for public registration, the gay.xxx address was bought by Corbin Fisher, one of the world’s biggest gay porn producers.

It is the highest amount ever paid for a domain name before the extension is publicly launched.

The extension .xxx is owned by ICM Registry and is aimed at the adult industry.

The company is currently operating a ‘sunrise’ period in which big brands can block their trademarks and porn sites can snap up .xxx domain names.

Last year, sex.com sold for $13 million – the most expensive domain name sale of all time.