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Catchdoms Security API vs InternetDB API

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

APICatchdoms Security APIHEALTHY93InternetDB APIHEALTHY99
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms437133
P95 · ms13982260
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Catchdoms Security API vs InternetDB API: common questions

Which is more reliable, Catchdoms Security API or InternetDB API?

Both are neck-and-neck — Catchdoms Security API and InternetDB API each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, Catchdoms Security API or InternetDB API?

InternetDB API has the lower median latency in our checks — Catchdoms Security API responds in 437 ms versus InternetDB API at 133 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 Catchdoms Security API and InternetDB API need an API key?

Neither needs a paid key — Catchdoms Security API is callable with no signup, and InternetDB API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Catchdoms Security API and InternetDB API from the browser?

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

Are Catchdoms Security API and InternetDB API free for commercial use?

Catchdoms Security API has unclear commercial terms, and InternetDB API 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.