Callback.co's availability was analyzed 5 times during the 1 993 day time frame that began on June 11, 2019. Out of every uptime test completed, callback.co was accessible 5 times, most recently evidenced by the 200 status response on November 23, 2024. No instances of callback.co being inaccessible were observed during all the tests conducted as of November 25, 2024. There was no error status code returned as of November 25, 2024, according to all responses received. The response from callback.co on November 23, 2024, was received in 0.265 seconds, compared to an average of 0.641 seconds.