The ground subsides and the earth lowers.
Maybe it was a sting by ourguys to see what the corrupt sheriff's dept. would do with "found ballots".
I don't assume the placeholders are sequential. To me they are just categories, that will get filled in with various kinds of data over time.
I tried querying Registration No. 929000 (the aircraft flying under callsign AF1 today) and ADSB returns no results. That does not surprise me. AF1 can suppress data emitted by their digital radar transponder if they want to, and often does. ADSB search has been fucky for months. Second time I retried using a dash in the 92-9000 and the query hangs. Sorry, I cannot obtain historical flight data on this aircraft for you at this time. I tried.
adsbexchange.com
Click Other tracking info, Flight History.
Select Registration and input the reg no.
Try searching the ICAO if you can find it.
I was unable to enter the callsign AF1.
Flightaware.com flight tracking reports
"This aircraft (92-9000) is not available for public tracking per request from the owner/operator."
So you are not going to be able to pull historical flight logs from any site, probably.