UPS consolidates and transports the package a part of the way, but eventually dumps it on a post office, I presume, wherever it is cheapest for UPS. Here is the tracking for a previous set of boards sent to Germany, oldest event first:
01/24/2020 10:36 A.M. Germany Delivered
01/24/2020 7:37 A.M. Germany Package processed by international carrier
01/21/2020 7:14 A.M. Germany Package processed by international carrier
01/20/2020 9:33 A.M. Germany Package processed by international carrier
01/20/2020 7:43 A.M. Germany Package arrived at international carrier
01/08/2020 10:24 A.M. Germany Package arrived at international carrier
01/07/2020 8:14 P.M. United States Package departed international carrier facility
01/06/2020 8:52 P.M. United States Package departed international carrier facility
01/06/2020 2:20 P.M. United States Package arrived at international carrier
01/06/2020 1:01 P.M. United States Package departed international carrier facility
01/06/2020 4:50 A.M. United States Package arrived at international carrier
01/06/2020 4:50 A.M. United States Package arrived at international carrier
01/06/2020 4:50 A.M. United States Package processed by international carrier
01/02/2020 9:20 P.M. SAN BERNARDINO, CA, United States Electronic Shipment Information Received for Package by international carrier
01/02/2020 8:00 P.M. Fontana, CA, United States Package transferred to post office
01/02/2020 3:58 P.M. FONTANA, CA, United States Package processed by UPS Mail Innovations origin facility
01/02/2020 2:32 P.M. FONTANA, CA, United States Package received for processing by UPS Mail Innovations
12/30/2019 4:55 P.M. United States Shipment information received by UPS Mail Innovations