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HOL Registry Broker vs Mediastack

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

APIHOL Registry BrokerNEW—MediastackNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

HOL Registry Broker vs Mediastack: common questions

Which is more reliable, HOL Registry Broker or Mediastack?

On our scheduled checks, Mediastack leads on measured uptime — HOL Registry Broker at —% versus Mediastack 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 HOL Registry Broker and Mediastack need an API key?

Both ask you to authenticate — HOL Registry Broker uses an API key and Mediastack uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call HOL Registry Broker and Mediastack from the browser?

Neither sends browser-friendly CORS headers reliably, so call HOL Registry Broker and Mediastack from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are HOL Registry Broker and Mediastack free for commercial use?

HOL Registry Broker has unclear commercial terms, and Mediastack 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.