CDR records are kept in every telco switch in every geo. Its required for it to work and to do billing. But the article is quite misleading in the data they con

CDR records are kept in every telco switch in every geo. Its required for it to work and to do billing. But the article is quite misleading in the data they contain. https://en.wikipedia.org/wiki/Call_detail_record https://en.wikipedia.org/wiki/Call_detail_record