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Callook.info vs Printify

Same instrument, two spec sheets — measured, not claimed.

APICallook.infoNEW—PrintifyNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified (data from public FCC ULS records)Unverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Callook.info vs Printify: common questions

Which is more reliable, Callook.info or Printify?

On our scheduled checks, Printify leads on measured uptime — Callook.info at —% versus Printify 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 Callook.info and Printify need an API key?

Callook.info needs no key, while Printify requires a free API key. If you want to start calling without signup, reach for Callook.info first.

Can I call Callook.info and Printify from the browser?

Only Callook.info is browser-friendly — it returns CORS headers over HTTPS. Printify needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Callook.info and Printify free for commercial use?

Callook.info has unclear commercial terms, and Printify 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.