IBAN Validation API vs Markbase
Same instrument, two spec sheets — measured, not claimed.
IBAN Validation API vs Markbase: common questions
Which is more reliable, IBAN Validation API or Markbase?
On our scheduled checks, IBAN Validation API leads on measured uptime — IBAN Validation API at 100% versus Markbase 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, IBAN Validation API or Markbase?
IBAN Validation API has the lower median latency in our checks — IBAN Validation API responds in 861 ms versus Markbase at 866 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 IBAN Validation API and Markbase need an API key?
Neither needs a paid key — IBAN Validation API is callable with no signup, and Markbase is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call IBAN Validation API and Markbase from the browser?
Yes — both IBAN Validation API and Markbase 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 IBAN Validation API and Markbase free for commercial use?
IBAN Validation API has unclear commercial terms, and Markbase 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.