In the time frame of 714 days beginning March 14, 2023, fsin-pismo.ru's availability was checked 14 times. According to the code 200 response from the most recent test, which was carried out on January 19, 2025, fsin-pismo.ru was online 14 times out of all checks. According to evaluations as of February 26, 2025, there were no periods of inactivity for fsin-pismo.ru. No errors were identified in any of the obtained responses as of February 26, 2025, according to the received replies. Fsin-pismo.ru, on January 19, 2025, had a response time of 1.276 seconds, compared to its average of 1.145 seconds.