Does Telstra collect events prior to registering an MSISDN

A question from a customer came in recently around registering mobile numbers (MSISDNs) to be polled for SIMswap events, and whether or not they can poll for events prior to the registration of the mobile number. The answer is; yes, Telstra collects events in a rolling 90-day window for all numbers on Telstra's network (excluding MVNO numbers). This means you can register a mobile number for TED API, and then poll for events that have occured prior to registeration of the number, which is handy if you want to register numbers, then poll, then de-register on the fly.