The domain was activated Wednesday at midnight, effectively jump-starting 160,000 preregistered Web addresses in more than 150 countries. New registrations will also be accepted.
The new domain is part of a list of other new Web suffixes that will be introduced, including .name, .pro, .aero, .museum and .coop. Another new top-level domain, .info, opened to the public in September but has experienced complications arising from the Sept. 11 terrorist attacks and the launch of a system for real-time registrations.
A Los Angeles judge had forced NeuLevel to delay the .biz launch pending a lawsuit alleging the company was assigning domain names through an illegal lottery system. Plaintiffs in the lawsuit eventually declined to post a bond preventing the company from assigning disputed names.
Reuters contributed to this report.