Found. Redirecting to https://services-eu1.arcgis.com/FH5XCsx8rYXqnjF5/arcgis/rest/services/Landmask___OSi_National_250k_Map_Of_Ireland/FeatureServer/replicafilescache/Landmask___OSi_National_250k_Map_Of_Ireland_9163965135570416135.geojson