PostalCodes

Geocoding

Postal code search, country exports, and address validation data

No AuthHTTPSCORS ?

Auth

No Auth

HTTPS

Yes

CORS

Unknown

API URL

IPstack

Locate and identify website visitors by IP address

ipapi.com

Real-time Geolocation & Reverse IP Lookup REST API

Actinia Grass GIS

Actinia is an open source REST API for geographical data that uses GRASS GIS