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CompanyData.com vs TaxID

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

APICompanyData.comHEALTHY68TaxIDHEALTHY89
Uptime · 30d
Uptime · 90d49.0%100%
Uptime · 30d55.0%100%
P50 · ms243729
P95 · ms9311556
AuthnoneapiKey
CORSyesno
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

CompanyData.com vs TaxID: common questions

Which is more reliable, CompanyData.com or TaxID?

On our scheduled checks, TaxID leads on measured uptime — CompanyData.com at 49.0% versus TaxID at 100% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, CompanyData.com or TaxID?

CompanyData.com has the lower median latency in our checks — CompanyData.com responds in 243 ms versus TaxID at 729 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 CompanyData.com and TaxID need an API key?

CompanyData.com needs no key, while TaxID requires a free API key. If you want to start calling without signup, reach for CompanyData.com first.

Can I call CompanyData.com and TaxID from the browser?

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

Are CompanyData.com and TaxID free for commercial use?

CompanyData.com has unclear commercial terms, and TaxID 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.