In the time frame of 624 days beginning March 14, 2023, fsin-pismo.ru's availability was checked 3 times. According to the code 200 response from the most recent test, which was carried out on November 24, 2024, fsin-pismo.ru was online 3 times out of all checks. According to evaluations as of November 28, 2024, there were no periods of inactivity for fsin-pismo.ru. No errors were identified in any of the obtained responses as of November 28, 2024, according to the received replies. Fsin-pismo.ru, on November 24, 2024, had a response time of 0.864 seconds, compared to its average of 0.973 seconds.