said by Pher9999:
Only way for a route to change is a LERG Update or porting request. If not Switches don't get updated like Ever.... Could there have been a mistype somewhere in the School Provider's system, sure.
This is correct, when an update to the LERG is made then we will see updates made. For instance, say the NY metro area added a new NPA-NXX, the LERG will require all providers to update their switches to route accordingly. Of course you will find one or two telecoms that either didn't update their switch or put in the update but made a mistake somehow.