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DomainDb Info vs SLA Uptime Calculator

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

APIDomainDb InfoHEALTHY97SLA Uptime CalculatorHEALTHY82
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms2341373
P95 · ms16352741
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

DomainDb Info vs SLA Uptime Calculator: common questions

Which is more reliable, DomainDb Info or SLA Uptime Calculator?

Both are neck-and-neck — DomainDb Info and SLA Uptime Calculator 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, DomainDb Info or SLA Uptime Calculator?

DomainDb Info has the lower median latency in our checks — DomainDb Info responds in 234 ms versus SLA Uptime Calculator at 1373 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 DomainDb Info and SLA Uptime Calculator need an API key?

Neither needs a paid key — DomainDb Info is callable with no signup, and SLA Uptime Calculator is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call DomainDb Info and SLA Uptime Calculator from the browser?

Only SLA Uptime Calculator is browser-friendly — it returns CORS headers over HTTPS. DomainDb Info needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are DomainDb Info and SLA Uptime Calculator free for commercial use?

DomainDb Info has unclear commercial terms, and SLA Uptime Calculator 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.