City, Gdynia vs FastDOL

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

Uptime · 30d
Uptime · 90d99.44%76.1%
Uptime · 30d100%28.3%
P50 · ms624443
P95 · ms39331725
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree / open dataFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

City, Gdynia vs FastDOL: common questions

Which is more reliable, City, Gdynia or FastDOL?

On our scheduled checks, City, Gdynia leads on measured uptime — City, Gdynia at 99.44% versus FastDOL at 76.1% 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, City, Gdynia or FastDOL?

FastDOL has the lower median latency in our checks — City, Gdynia responds in 624 ms versus FastDOL at 443 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 City, Gdynia and FastDOL need an API key?

City, Gdynia needs no key, while FastDOL requires a free API key. If you want to start calling without signup, reach for City, Gdynia first.

Can I call City, Gdynia and FastDOL from the browser?

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

Are City, Gdynia and FastDOL free for commercial use?

City, Gdynia has unclear commercial terms, and FastDOL 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.