Yes, Mariah owns the all-time radio audience-impressions record in USA with We Belong Together - that peaked at 254+ million impressions on Mediabase.
Billboard uses Nielsen Broadcast Data Systems to track the American radio airplay. We Belong Together peaked at 212.1 million impressions in a week.
Remember that both companies tracked much fewer radio channels back then than they do these days. Despite that no one has been anywhere near beating Mariah's record.
Remember that both companies tracked much fewer radio channels back then than they do these days. Despite that no one has been anywhere near beating Mariah's record.