10 tests have been conducted on postcalc.ru's availability in the 1 346 days since March 14, 2021. Postcalc.ru's last known uptime on November 20, 2024, provided a code 200 response, operational 10 times during the course of all checks. As of November 20, 2024, postcalc.ru had no reported downtime incidents in tests conducted. As of November 20, 2024, according to every response received, there have been no responses with an error status. On November 20, 2024, records show a postcalc.ru response time of 0.211 seconds, compared to an average of 0.245 seconds.