List of best mirrors for IP address 18.118.164.100, 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/g/grub-efi-amd64-signed/grub-efi-amd64-signed_1+2.12+5.dsc