9 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 19, 2024, provided a code 200 response, operational 9 times during the course of all checks. As of November 19, 2024, postcalc.ru had no reported downtime incidents in tests conducted. As of November 19, 2024, according to every response received, there have been no responses with an error status. On November 19, 2024, records show a postcalc.ru response time of 0.217 seconds, compared to an average of 0.249 seconds.