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ITIS vs USGS Earthquake Hazards Program

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

APIITISNEW—USGS Earthquake Hazards ProgramNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedPublic domain (U.S. Government work)
Free tierFree — limits not publishedFree — no API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

ITIS vs USGS Earthquake Hazards Program: common questions

Which is more reliable, ITIS or USGS Earthquake Hazards Program?

On our scheduled checks, USGS Earthquake Hazards Program leads on measured uptime — ITIS at —% versus USGS Earthquake Hazards Program 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 ITIS and USGS Earthquake Hazards Program need an API key?

Neither needs a paid key — ITIS is callable with no signup, and USGS Earthquake Hazards Program is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call ITIS and USGS Earthquake Hazards Program from the browser?

Only USGS Earthquake Hazards Program is browser-friendly — it returns CORS headers over HTTPS. ITIS needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are ITIS and USGS Earthquake Hazards Program free for commercial use?

ITIS has unclear commercial terms, and USGS Earthquake Hazards Program allows commercial use on its free tier. 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.