NetIntel · Subnet Calc

by NetIntel

GETBaseSolana

$0.005

per call · USD Coin on Base

Calculates IPv4/IPv6 subnet details from CIDR notation — network/broadcast, netmask, wildcard (Cisco ACL) mask, binary/hex masks, usable host range, RFC classification (private/loopback/multicast), supernet, and subnet-split counts. Pass comma-separated CIDRs to detect overlaps and classify each pair (subnet/supernet/partial overlap/disjoint); multi-CIDR responses return {subnets, overlaps}.

Endpoint

GET https://netintel.dev/subnet/calc

3

Calls / 30d

2

Unique payers / 30d

Sep 4

Last called

exact

Payment scheme

Call this service

TypeScript · @x402/fetch
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPay("https://netintel.dev/subnet/calc", {
  method: "GET",
});
const data = await res.json();
cURL
curl -X GET \
  "https://netintel.dev/subnet/calc?cidr=10.0.1.0%2F24" \
  -H "X-PAYMENT: <signed x402 payment>"

Example response

{
  "binary_mask": "11111111111111111111111100000000",
  "broadcast": "10.0.1.255",
  "cidr": "10.0.1.0/24",
  "first_usable": "10.0.1.1",
  "hex_mask": "ffffff00",
  "ip_version": 4,
  "is_private": true,
  "last_usable": "10.0.1.254",
  "netmask": "255.255.255.0",
  "network": "10.0.1.0",
  "prefix_length": 24,
  "rfc_classification": "Private (RFC 1918)",
  "subnets": [
    {
      "count": 2,
      "prefix": "/25"
    },
    {
      "count": 4,
      "prefix": "/26"
    },
    {
      "count": 8,
      "prefix": "/27"
    },
    {
      "count": 16,
      "prefix": "/28"
    }
  ],
  "supernet": "10.0.0.0/23",
  "total_hosts": 256,
  "usable_hosts": 254,
  "wildcard": "0.0.0.255"
}

Payment details

Pay to0xdadc335482ad545296fd7b28518a251ffcbeb9df
AssetUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913
NetworksBase, Solana
Schemesexact

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