One of the things we do as part of the log checking for CQ WW is download the FCC license data on Sunday evening of the contest. We then use this info to check for QSOs with non-existant callsigns. Steve, N8BJQ, used this data to calculate the license class for USA entrants in the 2018 contests.
USA SSB ENTRANTS BY LICENSE CLASS
| NOVICE | 0 |
| TECHNICIAN | 3 |
| GENERAL | 298 |
| ADVANCED | 60 |
| EXTRA | 1785 |
| TOTAL | 2146 |
USA CW ENTRANTS BY LICENSE CLASS
| NOVICE | 1 |
| TECHNICIAN | 2 |
| GENERAL | 62 |
| ADVANCED | 23 |
| EXTRA | 1836 |
| TOTAL | 1924 |