⚠️ Google Maps API key needed.
This page needs its own Google Maps JavaScript API key to work. Open
coverage-map.html and replace
YOUR_GOOGLE_MAPS_API_KEY with a real key from the
Google Cloud Console
(enable the
Maps JavaScript API and
Places API on that project; Places is needed
for the search-suggestions dropdown).
Google also offers a no-billing-required
Maps Demo Key if you just want to test this out first.
Zoom in a bit to see coverage -- at world view it would just be one meaningless blob.