One API for IP intelligence

VPN, proxy, datacenter and Tor detection. Geolocation. ASN data. One endpoint, honest pricing, generous free tier.

Example request

GET https://api.subnetcalculator.dev/v1/ip/8.8.8.8

→ {
  "ip": "8.8.8.8",
  "is_vpn": false,
  "is_proxy": false,
  "is_datacenter": true,
  "asn": 15169,
  "as_name": "Google LLC",
  "country": "US",
  "city": "Mountain View"
}

VPN / proxy / datacenter / Tor detection for fraud & abuse prevention
Geolocation + ASN in the same response — one call instead of three
No credit card for the free tier, no surprise overage bills

Planned pricing

Free

1,000 req/day

Starter

$15/mo

50k req/day

Pro

$49/mo

250k req/day

Business

$199/mo

2M req/day + SLA

Planned pricing — subject to change before launch.

Launching soon. Founding users get a bonus: double rate limits for life.

From the maker of subnetcalculator.dev — free tools used by thousands of engineers every month.