GeoIP-db vs Postcodes.io
Same instrument, two spec sheets — measured, not claimed.
GeoIP-db vs Postcodes.io: common questions
Which is more reliable, GeoIP-db or Postcodes.io?
On our scheduled checks, Postcodes.io leads on measured uptime — GeoIP-db at 94.1% versus Postcodes.io 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, GeoIP-db or Postcodes.io?
Postcodes.io has the lower median latency in our checks — GeoIP-db responds in 220 ms versus Postcodes.io at 33 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 GeoIP-db and Postcodes.io need an API key?
Neither needs a paid key — GeoIP-db is callable with no signup, and Postcodes.io is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call GeoIP-db and Postcodes.io from the browser?
Yes — both GeoIP-db and Postcodes.io 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 GeoIP-db and Postcodes.io free for commercial use?
GeoIP-db has unclear commercial terms, and Postcodes.io 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.