Availability checks of atcf.jp reached 6 during the 2 166 day interval starting on February 5, 2019. Atcf.jp, during all tests, proved its functionality 6 times, with the latest uptime on September 2, 2021, confirming a response of code 200. No unavailability incidents were noted for atcf.jp during tests conducted as of January 11, 2025. No error statuses were reported in any responses received as of January 11, 2025, according to all replies. Recorded on September 2, 2021, was a 3.060 seconds response time for atcf.jp, averaging 2.083 seconds.