Proweblook IP Checker vs ViaCep
Same instrument, two spec sheets — measured, not claimed.
Proweblook IP Checker vs ViaCep: common questions
Which is more reliable, Proweblook IP Checker or ViaCep?
On our scheduled checks, Proweblook IP Checker leads on measured uptime — Proweblook IP Checker at 100% versus ViaCep 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, Proweblook IP Checker or ViaCep?
Proweblook IP Checker has the lower median latency in our checks — Proweblook IP Checker responds in 56 ms versus ViaCep at 651 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 Proweblook IP Checker and ViaCep need an API key?
ViaCep needs no key, while Proweblook IP Checker requires a free API key. If you want to start calling without signup, reach for ViaCep first.
Can I call Proweblook IP Checker and ViaCep from the browser?
Yes — both Proweblook IP Checker and ViaCep 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 Proweblook IP Checker and ViaCep free for commercial use?
Proweblook IP Checker has unclear commercial terms, and ViaCep 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.