Whosonfirst.mapzen.com was checked for availability 4 times over the past 2 194 days, starting on February 5, 2019. All the tests conducted as of February 7, 2025, showed that whosonfirst.mapzen.com was unavailable or facing problems. Of all tests carried out, whosonfirst.mapzen.com was offline during 4 of them, equivalent to 100.00%, with the latest on January 8, 2025. As of February 7, 2025, all received responses have been confirmed to have no error status. On January 8, 2025, — seconds was whosonfirst.mapzen.com's response time, while 0.001 seconds is the average.