List of best mirrors for IP address 3.129.253.21, 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/p/python3.7/libpython3.7-dbg_3.7.3-2+deb10u7_armhf.deb