When you look up a users call history the last 4 digits of the number are always obscured. For example +1800553****. Why is this done? When you look at a phone bill from a phone carrier it shows the number dialed.
@jstanis - I think that is by design because you can have different levels of support viewing Call Analytics. If you open the Skype for Business Legacy Portal and open the PSTN Reports, you can see the full telephone number there.