Current public limit
6 API calls per 10 seconds per IP address. This is a request-rate rule, not a monthly allowance.
If you receive HTTP 429
Stop the burst and wait before trying again. Follow Retry-After when the response provides it. Repeated immediate retries can make the problem worse.
Good client behaviour
- Cache successful postal lookups when your freshness needs allow it.
- Debounce type-ahead search instead of sending a request for every key press.
- Cancel search requests that are no longer needed.
- Avoid repeating the same lookup many times in a short period.
- Use bounded retries only for temporary failures.
Fair use
Do not rotate IP addresses, proxies or accounts to avoid the rate limit. See the Abuse Policy for fair-use rules.