'~^https?://[^.]*\.twpkinfo\.com/' 1; # Too much traffic
'~^https?://9db\.jp/' 1; # Too much traffic
'~^https?://[^.]*\.9db\.jp/' 1; # Too much traffic
+ '~^https?://clustrmaps\.com/' 1; # Too much traffic
+ '~^https?://[^.]*\.clustrmaps\.com/' 1; # Too much traffic
}
map $http_referer $osm_referer {