Zbook.ru has been checked 4 times for availability over the previous 274 days since February 27, 2024. In all checks completed, zbook.ru was found to be either offline or encountering difficulties with functionality as of November 28, 2024. Checks revealed that as of November 28, 2024, zbook.ru has no service interruptions. Identified as the latest error within the 4 error-containing responses, code 403 was observed on May 21, 2024. Zbook.ru's 0.089 seconds response on May 21, 2024, differed from its average response time of 0.113 seconds.