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DomainDb Info vs serpstack

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

APIDomainDb InfoNEW—serpstackNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

DomainDb Info vs serpstack: common questions

Which is more reliable, DomainDb Info or serpstack?

On our scheduled checks, serpstack leads on measured uptime — DomainDb Info at —% versus serpstack 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 DomainDb Info and serpstack need an API key?

DomainDb Info needs no key, while serpstack requires a free API key. If you want to start calling without signup, reach for DomainDb Info first.

Can I call DomainDb Info and serpstack from the browser?

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

Are DomainDb Info and serpstack free for commercial use?

DomainDb Info has unclear commercial terms, and serpstack 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.