2 uptime tests for houghtonmifflinbooks.com were performed during the 1 253 day period starting on June 25, 2021, according to records. Throughout the whole testing period, houghtonmifflinbooks.com was up 2 times, the most recent uptime was on June 25, 2021, when a code 200 was returned. As of November 30, 2024, no offline periods were noted for houghtonmifflinbooks.com in any of the inspections that were conducted. No reply with an erroneous status had been received as of November 30, 2024, according to the records. 0.197 seconds is houghtonmifflinbooks.com's average response time, while on June 25, 2021, it responded in 0.192 seconds.