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HOL Registry Broker vs Microlink.io

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

APIHOL Registry BrokerNEW—Microlink.ioNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedN/A — returns metadata extracted from the URL you pass
Free tierFree tier — API key requiredFree tier — no key required (Pro plans need a key)
Rate limitUnpublishedFree tier is rate-limited per day (see pricing)
In directory since2026-07-052026-07-05
operationalpartialdownno data

HOL Registry Broker vs Microlink.io: common questions

Which is more reliable, HOL Registry Broker or Microlink.io?

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

Microlink.io needs no key, while HOL Registry Broker requires a free API key. If you want to start calling without signup, reach for Microlink.io first.

Can I call HOL Registry Broker and Microlink.io from the browser?

Only Microlink.io is browser-friendly — it returns CORS headers over HTTPS. HOL Registry Broker needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are HOL Registry Broker and Microlink.io free for commercial use?

HOL Registry Broker has unclear commercial terms, and Microlink.io 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.