The number of uptime tests performed for cefr.io reached 3 during the 1 141 day interval starting December 11, 2021. 3 times cefr.io was online out of all reviews conducted, last confirmed on March 15, 2024, by a returned 200 code. No periods of inoperability were observed for cefr.io across all assessments made as of January 26, 2025. As of January 26, 2025, out of all the replies that were received, none of the responses had an error status. The response time was 0.062 seconds for cefr.io on March 15, 2024, while the average response time is 0.116 seconds.