Microsoft, Nokia, Vodafone, the GSM Association and others will start issuing .mobi top-level domain names from the first half of next year.
The companies have formed the MTLD venture to distribute .mobi domains after signing a deal with internet domain regulator Icann.
The move is designed to promote the internet to mobile device users by registering sites optimised for mobile use.
Sites registering will be expected to deliver content over slower connections and onto smaller screens, for instance.
MTLD will act as the .mobi registrar for the next 10 years.