List of best mirrors for IP address 3.12.163.23, 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/g/gnuradio/libgnuradio-pmt3.8.2-dbgsym_3.8.2.0-9+rpi1_arm64.deb