IDN and homograph analysis API API

Example request

curl -H "X-API-Key: $DOMSCAN_API_KEY" "https://domscan.net/v1/idn?domain=xn--80ak6aa92e.com"

const response = await fetch("https://domscan.net/v1/idn?domain=xn--80ak6aa92e.com", {
  headers: { "X-API-Key": process.env.DOMSCAN_API_KEY },
});
const data = await response.json();
console.log(data);

import os
import requests

response = requests.get(
    "https://domscan.net/v1/idn?domain=xn--80ak6aa92e.com",
    headers={"X-API-Key": os.environ["DOMSCAN_API_KEY"]},
)
print(response.json())

package main

import (
	"fmt"
	"io"
	"net/http"
	"os"
)

func main() {
	req, err := http.NewRequest(http.MethodGet, "https://domscan.net/v1/idn?domain=xn--80ak6aa92e.com", nil)
	if err != nil {
		panic(err)
	}
	req.Header.Set("X-API-Key", os.Getenv("DOMSCAN_API_KEY"))

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()

	data, err := io.ReadAll(resp.Body)
	if err != nil {
		panic(err)
	}
	fmt.Println(resp.Status, string(data))
}

require "json"
require "net/http"

uri = URI("https://domscan.net/v1/idn?domain=xn--80ak6aa92e.com")
request = Net::HTTP::Get.new(uri)
request["X-API-Key"] = ENV.fetch("DOMSCAN_API_KEY")

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) do |http|
  http.request(request)
end
puts JSON.pretty_generate(JSON.parse(response.body))

Example response

{
  "input": "xn--80ak6aa92e.com",
  "outcome": "analyzed",
  "unicode": "аррӏе.com",
  "ascii": "xn--80ak6aa92e.com",
  "is_idn": true,
  "valid": true,
  "errors": [],
  "labels": [
    {
      "unicode": "аррӏе",
      "ascii": "xn--80ak6aa92e",
      "is_idn": true,
      "scripts": [
        "Cyrillic"
      ],
      "mixed_script": false,
      "has_invisible": false,
      "confusable_characters": [
        {
          "char": "а",
          "codepoint": "U+0430",
          "script": "Cyrillic",
          "looks_like": "a"
        },
        {
          "char": "р",
          "codepoint": "U+0440",
          "script": "Cyrillic",
          "looks_like": "p"
        },
        {
          "char": "р",
          "codepoint": "U+0440",
          "script": "Cyrillic",
          "looks_like": "p"
        },
        {
          "char": "ӏ",
          "codepoint": "U+04CF",
          "script": "Cyrillic",
          "looks_like": "l"
        },
        {
          "char": "е",
          "codepoint": "U+0435",
          "script": "Cyrillic",
          "looks_like": "e"
        }
      ]
    },
    {
      "unicode": "com",
      "ascii": "com",
      "is_idn": false,
      "scripts": [
        "Latin"
      ],
      "mixed_script": false,
      "has_invisible": false,
      "confusable_characters": []
    }
  ],
  "skeleton": "apple.com",
  "risk": {
    "level": "high",
    "reasons": [
      "whole_script_confusable",
      "idn_label"
    ]
  },
  "tld": {
    "label": "com",
    "ascii": "com",
    "is_idn": false
  },
  "checked_at": "2026-10-09T10:15:30.000Z",
  "caveats": [
    "partial_confusable_table"
  ]
}

HTTP status codes

• 200 OK
• 400 Bad Request
• 401 Unauthorized
• 402 Payment Required
• 429 Too Many Requests