Bell IP Holdings is a joint venture of AT&T, Verizon, CenturyLink, and Cincinnati Bell (or their respective subsidiaries) which owns the rights to the former Bell System logos and trademarks outside of the U.S. and Canada. It also administers a variety of related common assets such as the domain name bell.com. In the United States, the aforementioned operating companies each own concurrent rights to the Bell trademarks. Bell Canada retained sole rights to the marks in that country after its spinoff from AT&T in 1975.