NHTSA vs PostalPinCode
Same instrument, two spec sheets — measured, not claimed.
NHTSA vs PostalPinCode: common questions
Which is more reliable, NHTSA or PostalPinCode?
On our scheduled checks, NHTSA leads on measured uptime — NHTSA at 99.02% versus PostalPinCode at 98.0% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Which is faster, NHTSA or PostalPinCode?
NHTSA has the lower median latency in our checks — NHTSA responds in 760 ms versus PostalPinCode at 912 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.
Do NHTSA and PostalPinCode need an API key?
Neither needs a paid key — NHTSA is callable with no signup, and PostalPinCode is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call NHTSA and PostalPinCode from the browser?
Yes — both NHTSA and PostalPinCode send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.
Are NHTSA and PostalPinCode free for commercial use?
NHTSA allows commercial use on its free tier, and PostalPinCode has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.