17NAS API alternatives

Free IP geolocation API with IPv4/IPv6 detection, ASN and country info, no auth required. If it doesn't fit your project, here are the 10 best free Geocoding APIs to use instead in 2026, out of 117 in the directory.

For reference, 17NAS API: No API key needed · 100% uptime (30 days) · Callable from the browser (CORS).

1. 1

   SLF API

   Online · 285 ms

   German city, country, river, database.

   • No API key needed
   • 100% uptime (30 days)
   • Fast: 285 ms response
   • Callable from the browser (CORS)

   No authHTTPSCORS
2. 2

   administrative-divisons-db API

   Online · 452 ms

   Get all administrative divisions of a country.

   • No API key needed
   • 100% uptime (30 days)
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
3. 3

   ipapi.co API

   Online · 951 ms

   Find IP address location information.

   • No API key needed
   • 100% uptime (30 days)
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
4. 4

   IPKit API

   Online · 752 ms

   IP lookup with location, ASN/ISP and VPN/proxy/Tor signals.

   • No API key needed
   • 100% uptime (30 days)
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
5. 5

   Moradas API

   Online · 1060 ms

   Portuguese address autocomplete and 7-digit postal codes (CP7).

   • No API key needed
   • 100% uptime (30 days)
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
6. 6

   PostalCodeCheck API

   Online · 1038 ms

   City, region and coordinates for 887,000+ postal codes across 95 countries.

   • No API key needed
   • 100% uptime (30 days)
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
7. 7

   Postali API

   Online · 1147 ms

   Mexico Zip Codes API. A free geocoding API by Postali.

   • No API key needed
   • 100% uptime (30 days)
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
8. 8

   Postcodes.io API

   Online · 982 ms

   Postcode lookup & Geolocation for the UK.

   • No API key needed
   • 100% uptime (30 days)
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
9. 9

   REST Countries API

   Online · 1157 ms

   Get information about countries via a RESTful API.

   • No API key needed
   • 100% uptime (30 days)
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
10. 10

    Pinball Map API

    Online · 657 ms

    A crowdsourced map of public pinball machines.

    • No API key needed
    • 100% uptime (30 days)
    • Callable from the browser (CORS)
    • HTTPS

    No authHTTPSCORS

17NAS API vs alternatives

17NAS API compared with its alternatives

API	API key	HTTPS	CORS	Uptime	Response	Rating
17NAS	No	Yes	Yes	100%	1147 ms	Not rated
SLF	No	Yes	Yes	100%	285 ms	Not rated
administrative-divisons-db	No	Yes	Yes	100%	452 ms	Not rated
ipapi.co	No	Yes	Yes	100%	951 ms	Not rated
IPKit	No	Yes	Yes	100%	752 ms	Not rated
Moradas	No	Yes	Yes	100%	1060 ms	Not rated
PostalCodeCheck	No	Yes	Yes	100%	1038 ms	Not rated
Postali	No	Yes	Yes	100%	1147 ms	Not rated
Postcodes.io	No	Yes	Yes	100%	982 ms	Not rated

See also: best Geocoding APIs · all Geocoding APIs