From December 4, 2020, through the following 1 516 days, 2 availability checks of national-letter.org were conducted. Tests revealed that national-letter.org was reachable 2 times in total, with the most recent uptime occurring on September 28, 2021, and returning a code 200. As of January 28, 2025, no offline periods were noted for national-letter.org in any of the inspections that were conducted. As of January 28, 2025, it is confirmed by all received responses that none contained an error status. Data indicates national-letter.org's 2.130 seconds response time on September 28, 2021, against a 1.280 seconds average.