List of best mirrors for IP address 3.133.153.110, 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/libz/libzstd/zstd_1.3.8+dfsg-3+rpi1+deb10u2_arm64.deb