PEP-449 [1] describes the 'Removal of the PyPI Mirror Auto Discovery and
Naming Scheme'.
The main elements of this (Accepted) proposal are:
Removal of [a-z].pypi.python.org DNS CNAMES
Replacing individual mirrors with a single Geo-aware CDN service
Previous revisions 365159, 347895, 342514 deprecated several individual
mirrors and *.pypi.python.org aliases. The following changes (Part III)
completes the (PEP-449 compatibility) transition:
Remove pypi.crate.io (NXDOMAIN)
Remove pypi.python.jp (Outdated, Broken for DISTNAMEs w/ hyphens
Switch to TLS (HTTPS) MASTER_SITE by default
Leave a non-TLS (HTTP) MASTER_SITE for fallback (proxy environments)
This change is also likely to fix PyPI (CHEESESHOP) update detection in
Portscout, at least until upcoming changes for the portscout port add a
dedicated sitehandler for it (and GitHub).
[1] https://www.python.org/dev/peps/pep-0449/
MFH: 2015Q4
Differential Revision: https://reviews.freebsd.org/D3972