Numverify vs ReqRes
Same instrument, two spec sheets — measured, not claimed.
Numverify vs ReqRes: common questions
Which is more reliable, Numverify or ReqRes?
On our scheduled checks, ReqRes leads on measured uptime — Numverify at —% versus ReqRes at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Do Numverify and ReqRes need an API key?
ReqRes needs no key, while Numverify requires a free API key. If you want to start calling without signup, reach for ReqRes first.
Can I call Numverify and ReqRes from the browser?
Neither sends browser-friendly CORS headers reliably, so call Numverify and ReqRes from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.
Are Numverify and ReqRes free for commercial use?
Numverify has unclear commercial terms, and ReqRes 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.