12 times isi.co.rs was tested for operability over the course of 1 248 days starting on June 30, 2021. Isi.co.rs was functional 12 times out of all checks conducted, with the latest recorded uptime on November 7, 2024, returning a code 200. According to the assessments conducted as of November 29, 2024, isi.co.rs did not experience any downtime. All replies received as of November 29, 2024, confirm that there have been no responses with an error status. The November 7, 2024, response time of isi.co.rs was 0.073 seconds, compared to an average of 0.277 seconds.