List of best mirrors for IP address 3.140.188.195, located in an unknown country.
I am very sorry, but no mirror was found. Feel free to download directly:
http://mirrordirector-mb.raspbian.org/multiarch/pool/main/o/opencascade/libocct-data-exchange-7.3_7.3.0+dfsg1-5+rpi1_arm64.deb