API guides/IP, DNS, and HTTP
City, region, country, ASN, and ISP from an IP. Compare ip-api (free, HTTP, non-commercial), IPinfo, and ipapi.co.
3 providers · 6 min · Limits change — verify before you ship
IP, DNS, and HTTP
Geolocation is a best-effort database lookup, not GPS. Accuracy varies by ISP and VPN. PureDevKit’s CIDR tool does subnet math only — it does not know the city. These providers do.
| Provider | Pricing | Key | HTTPS | CORS |
|---|---|---|---|---|
| ip-api | Free | No key | No | Usually yes |
| IPinfo | Freemium | Required | Yes | Verify |
| ipapi.co | Freemium | Optional | Yes | Usually yes |
GET http://ip-api.com/json/{ip}
HTTPS
HTTP only
API key
No key
CORS
Usually yes
Use
Free tier
Limits. Free: about 45 requests/minute, HTTP only, non-commercial. HTTPS and higher volume are paid (Pro).
Commercial. Free tier is non-commercial. Use Pro for commercial HTTPS.
Note. Do not send HTTPS to the free host — it is not offered there. Omit the IP to look up the caller.
curl -sS "http://ip-api.com/json/8.8.8.8"GET https://ipinfo.io/{ip}/json?token=YOUR_TOKEN
HTTPS
Yes
API key
Required
CORS
Verify
Use
See limits
Limits. Free tier is typically tens of thousands of requests per month with a token. Paid plans add privacy/ASN detail.
Commercial. Free tier allows commercial use subject to current IPinfo terms.
Note. Token belongs on a server. Check the current free-tier number on their pricing page.
curl -sS "https://ipinfo.io/8.8.8.8/json?token=YOUR_TOKEN"GET https://ipapi.co/{ip}/json/
HTTPS
Yes
API key
Optional
CORS
Usually yes
Use
See limits
Limits. A small daily quota without a key; paid plans raise limits and unlock extra fields.
Commercial. See ipapi.co pricing. Do not assume the no-key path is unlimited.
curl -sS "https://ipapi.co/8.8.8.8/json/"PureDevKit does not host or proxy these APIs. Pricing, rate limits, CORS, authentication, and JSON shapes can change without notice. Always confirm the current rules on the provider’s official documentation before you ship.