Sefer.ru was checked for uptime 4 times over 1 381 days beginning February 20, 2021, according to reports. Out of all the analyses that were done, sefer.ru was reachable 4 times, with the last uptime on October 30, 2024, returning a code 200. As of December 2, 2024, no inaccessibility incidents have been detected for sefer.ru in all tests. According to replies, as of December 2, 2024, all responses were received without any error statuses. On October 30, 2024, 0.758 seconds contrasted with the 1.048 seconds average response time noted for sefer.ru.