GeoIP-db vs PostalCodes
Same instrument, two spec sheets — measured, not claimed.
GeoIP-db vs PostalCodes: common questions
Which is more reliable, GeoIP-db or PostalCodes?
On our scheduled checks, PostalCodes leads on measured uptime — GeoIP-db at 94.1% versus PostalCodes at 99.02% 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 PostalCodes?
GeoIP-db has the lower median latency in our checks — GeoIP-db responds in 220 ms versus PostalCodes at 1030 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 PostalCodes need an API key?
Neither needs a paid key — GeoIP-db is callable with no signup, and PostalCodes is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call GeoIP-db and PostalCodes from the browser?
Only GeoIP-db is browser-friendly — it returns CORS headers over HTTPS. PostalCodes needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are GeoIP-db and PostalCodes free for commercial use?
GeoIP-db has unclear commercial terms, and PostalCodes 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.