The first domain suffixes specially created for mobile devices became available on Monday, but some critics say a new domain naming plan is unnecessary. On Monday, Mobile Top Level Domain, the company put in charge by ICANN (Internet Corporation of Assigned Names and Numbers) last summer of allocating the domain names, opened initial domain name registration. Mobile Top Level Domain, or mTLD, is funded by a consortium of companies including Ericsson, Google, Microsoft, Nokia, Samsung Electronics, T-Mobile and Vodafone.