Lookproof

Check one IPv4 or IPv6 address against up to 100 CIDR blocks and get, for each, whether it contains the address, plus the blocks that do; blocks of the other IP version never match. Offline. Use when an agent must tell whether an address is in an allow list, a provider's ranges or an SPF ip4/ip6 term. Input: {"ip": "192.0.2.10", "cidrs": ["192.0.2.0/24"]}.

Open endpoint ↗

Price per call: $0.002
Chain: Base
Method: POST
Paid calls · 30 days: 1

Call it from code

This API is run by its own provider and paid directly through x402. We list it so you can find it; we don't route or hold the payment.

import { x402Client, wrapFetchWithPayment } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";

const client = new x402Client();
registerExactEvmScheme(client, { signer: agentAccount });

const pay = wrapFetchWithPayment(fetch, client);
const res = await pay("https://api.lookproof.dev/v1/ip/contains", { method: "POST" });
console.log(await res.json());

https://api.lookproof.dev/v1/ip/contains