There's required disclosure using an administrative subpoena for records over 180 days old if they have them CALEA requires phone (and later broadband) equipme

There's required disclosure using an administrative subpoena for records over 180 days old if they have them CALEA requires phone (and later broadband) equipment to conform to wiretapping standards, and if a carrier gets a court order to wiretap it has to provide that data from warrant receipt til warrant expiration. Landlines have some data retention requirements. But there's no law on broadband or wireless data retention. There may well and likely is a secret FISA court order under section 702 that's been served to telecoms, but an astonishingly small number of people in govt and industry know whether that actually says that they just have to hand over records in real time or whether they need to keep records for some period of time.