List of best mirrors for IP address 3.138.33.120, located in an unknown country.
I am very sorry, but no mirror was found. Feel free to download directly:
http://mirrordirector-mb.raspbian.org/raspbian/pool/main/h/hdf5/libhdf5-cpp-103_1.10.4+repack-10+deb10u1_armhf.deb