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US ZipCode vs VA Facilities

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

APIUS ZipCodeNEW—VA FacilitiesNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

US ZipCode vs VA Facilities: common questions

Which is more reliable, US ZipCode or VA Facilities?

On our scheduled checks, VA Facilities leads on measured uptime — US ZipCode at —% versus VA Facilities 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 US ZipCode and VA Facilities need an API key?

Both ask you to authenticate — US ZipCode uses an API key and VA Facilities uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call US ZipCode and VA Facilities from the browser?

Only US ZipCode is browser-friendly — it returns CORS headers over HTTPS. VA Facilities needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are US ZipCode and VA Facilities free for commercial use?

US ZipCode has unclear commercial terms, and VA Facilities 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.