The number belongs to a company in Van Nuys , California .
The number is redirected to local cab companies on a city - by - city basis and promoted by being printed on everything from individual taxi cab hub caps to campaigns against drunk driving .
The number belongs to a company in Van Nuys , California , but is redirected to local cab companies on a city - by - city basis and promoted by being printed on everything from individual taxi cab hub caps to campaigns against drunk driving .