The data indicates unitedstateszipcodes.org underwent 61 checks of its accessibility during the 2 320 days after August 2, 2019. During the whole testing period, unitedstateszipcodes.org was operational 22 times, the last uptime was on September 7, 2022, and an http status code of 200 was received. Reviews carried out as of December 8, 2025, indicated unitedstateszipcodes.org did not encounter any periods of inactivity. The most current error recorded from the 39 responses with errors was code 403 on November 28, 2025. The 0.041 seconds response time noted for unitedstateszipcodes.org on November 28, 2025, differed from its 0.303 seconds average.