export default {
  'vt-source': 'http://52.207.244.74', // source of current vector tiles
  'vt-hist-source': 'http://52.207.244.74', // source of historic vector tiles for compare feature
}

export default {
  'vt-source': 'http://da-tiles.osm-analytics.org', // source of current vector tiles
  'vt-hist-source': 'http://da-tiles.osm-analytics.org', // source of historic vector tiles for compare feature
}

Use DNS for da-tiles server