List of best mirrors for IP address 18.118.137.13, 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/n/nx-libs/nx-x11proto-composite-dev_3.5.99.27-1.1+b1_armhf.deb