List of best mirrors for IP address 3.144.255.198, 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/l/llvm-toolchain-11/libclang1-11_11.1.0-6+rpi1+b2_arm64.deb