Federal Register vs Open Government, UK

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

Uptime · 30d
Uptime · 90d98.0%100%
Uptime · 30d98.3%100%
P50 · ms4781686
P95 · ms31653087
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useyesyes
Data licenseUS Government work — public domainOpen Government Licence v3.0 (varies per dataset)
Free tierFree — no key or signup requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Federal Register vs Open Government, UK: common questions

Which is more reliable, Federal Register or Open Government, UK?

On our scheduled checks, Open Government, UK leads on measured uptime — Federal Register at 98.0% versus Open Government, UK 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, Federal Register or Open Government, UK?

Federal Register has the lower median latency in our checks — Federal Register responds in 478 ms versus Open Government, UK at 1686 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 Federal Register and Open Government, UK need an API key?

Neither needs a paid key — Federal Register is callable with no signup, and Open Government, UK is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Federal Register and Open Government, UK from the browser?

Yes — both Federal Register and Open Government, UK send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Federal Register and Open Government, UK free for commercial use?

Federal Register allows commercial use on its free tier, and Open Government, UK 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.