IP analysis script

.gitignore

node_modules
*.csv
package-lock.json

readme.md

IP analysis

Short script for translating IPs into ASNs. Add a list of IPs to the ip.txt file, then run node index.js.

index.js

const fs = require("fs");
const axios = require("axios");

async function main() {
  const outputPath = "output.csv";
  const ips = fs.readFileSync("ip.txt").toString().split("\n");

  const concurrency = 100; // Set the concurrency level here
  const chunks = chunkArray(ips, concurrency);
  let count = 1;

  for (const chunk of chunks) {
    console.log(`Batch ${count} of ${chunks.length}`);
    await Promise.all(
      chunk.map(async (ip) => {
        let line = "";

        const asn = await getAsn(ip);
        if (Object.keys(asn).length === 0) {
          line = `${ip}, '', '', ''`;
        } else {
          line = `${ip},${asn.autonomous_system_number},${asn.autonomous_system_organization},${asn.country}`;
        }

        await appendLineToFile(outputPath, line);
      })
    );
    count++;
  }
}

function chunkArray(array, chunkSize) {
  const chunks = [];
  for (let i = 0; i < array.length; i += chunkSize) {
    chunks.push(array.slice(i, i + chunkSize));
  }
  return chunks;
}

async function appendLineToFile(filePath, line) {
  try {
    await fs.promises.appendFile(filePath, line + "\n");
  } catch (error) {
    console.error("Error appending to file:", error);
  }
}

async function getAsn(ip) {
  try {
    const res = await axios.get(
      `https://maxmind.pantheon.support/datastudio?ip=${ip}`
    );
    return res.data;
  } catch (error) {
    return {};
  }
}

main();

ip.txt

24.96.13.43
3.9.181.110
3.97.52.164
3.98.129.15
39.62.8.168
43.251.92.9
69.70.50.58
2a09:bac1:3480:18::1f1:1e7
2a09:bac2:3778:ebe::178:4e
2001:1670:18:c15f:21ca:5fb:4346:43fd
2601:58b:c01:2600:4d49:374e:3db6:70e5
2607:fb91:1205:865:ab4a:1a9:3548:7826

package.json

{
  "name": "ip-analysis",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "axios": "^1.4.0"
  }
}