
Address geocoding / reverse geocoding in bulk.
Geocod.io API is a free Geocoding API that requires apiKey authentication, is served over HTTPS and has unconfirmed CORS support.
Geocoding and data enrichment for North America that just works
Details from geocod.io.

Unified API suite · now live
Geocode an address, validate an email, track a flight or pull stock data with one account, one dashboard and one API key.
Open geospatial data and API service for Greece
The Geocod.io API is provided by Geocodio (geocod.io). Geocoding and data enrichment for North America that just works
Yes. The Geocod.io API is listed in the Geocoding category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
Yes. The Geocod.io API uses apiKey authentication, so you need to register for credentials before making requests.
CORS support for the Geocod.io API is unknown. Test a request from the browser, and fall back to a server-side call if it is blocked.
Yes. The Geocod.io API is served over HTTPS, so it's safe to use in production.