The total uptime checks of fen.co.jp performed in the 276 days from March 1, 2024, reached 4. 4 instances of fen.co.jp uptime, including the code 200 result on June 7, 2024, were noted from the tests conducted. As of December 2, 2024, every inspection of fen.co.jp indicated that there were no offline periods. As of December 2, 2024, there is no record of any responses with an error status, according to all received replies. Fen.co.jp's response time on June 7, 2024, was 0.486 seconds, with an average of 1.254 seconds.