.mobi

Must be used for mobile-compatible sites in accordance with standards.

.mobi (also known informally as dotMobi) is a top-level domain approved by ICANN and managed by the mTLD global registry dedicated to delivering the Internet to mobile devices via the Mobile Web. It is financially backed and sponsored by Google, Microsoft, Nokia, Samsung, Ericsson, Vodafone, T-Mobile, Telefónica Móviles, Telecom Italia Mobile, Orascom Telecom, GSM Association , Hutchison Whampoa, Syniverse Technologies, and VISA, with an executive from each company having a seat on mTLD's board of directors.

Since 100% of .mobi sites must be optimized for viewing on a mobile phone, the main advantage of .mobi, from the users' perspective, is that they are guaranteed a site optimized for usage on the go. This means hard factors such as smaller screens, device form/size, device input/output options, existence of embedded sensors (acceleration, location, touch, light/darkness, ambient noise), as well as soft factors such as expectations of immediacy of results, context awareness under a shortened attention span (compared to home/desktop use of the Internet). Although a .com or any other extension can technically employ the same optimizations for mobile phones as .mobi sites, in practice, only a fraction of them are, thus necessitating content adaptation solutions. These retrofit the content to target devices independant from the original process of creating the site.[8]

As distinguished management of targeted content by country codes - usually done at the Top Level (e.g. with .JP and .DE) is not possible at the top level domain for .mobi domain names, facilitating this can be achieved by offering country targeted content segmeting it administrative realms using third level domains, obviously thes same ones representing the two letter country code of the respective ccTLD that is commonly used for the same market for content non-designated to explicitly support mobile use.

For globally relevant sites, this struture allows the site owner to bundle all mobile content of a site for all geographies in a single entry point, while still allowing full administrative delegation to the locally responsible stakeholders. These would choose hwf to present its content based on user preferences, for example with respect to desired language choices in a national population, for example English/Spanish in the USA, or French/Italian/German in Switzerland.