List of best mirrors for IP address 3.147.47.202, 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/libf/libfastjson/libfastjson-dev_0.99.8-2+deb10u1_armhf.deb