The data indicates unitedstateszipcodes.org underwent 59 checks of its accessibility during the 2 237 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 September 16, 2025, indicated unitedstateszipcodes.org did not encounter any periods of inactivity. The most current error recorded from the 37 responses with errors was code 403 on August 19, 2025. The 0.046 seconds response time noted for unitedstateszipcodes.org on August 19, 2025, differed from its 0.312 seconds average.