Domain WHOIS Examples by TLD · Example 137 of 138 in Internationalized (IDN)

WHOIS for .新加坡 (nic.新加坡)

GEThttps://api.deepinfo.com/v1/lookup/whois

The raw WHOIS record of nic.新加坡 from the .新加坡 registry; Deepinfo returned no parsed record.

TLD: .新加坡
Type: idn
Punycode: xn--yfro4i67o

.新加坡 is an internationalized top-level domain. Domain names travel in their ASCII (punycode) form, so the request asks for nic.xn--yfro4i67o.

The example requests the WHOIS record of nic.新加坡, the registry's own domain by convention, so raw shows the .新加坡 registry's WHOIS format, as the WHOIS server returned it. The registry answered, but Deepinfo returned no parsed record for this answer: parsed is null and parse_code is 13001.

Request

curl

curl 'https://api.deepinfo.com/v1/lookup/whois?domain=nic.xn--yfro4i67o' \
  -H 'apikey: YOUR_API_KEY' \
  -H 'Accept: application/json'

Python

import requests

url = "https://api.deepinfo.com/v1/lookup/whois"

params = {
    "domain": "nic.xn--yfro4i67o"
}

headers = {
    "apikey": "YOUR_API_KEY",
    "Accept": "application/json"
}

response = requests.get(url, params=params, headers=headers)
response.raise_for_status()
print(response.json())

JavaScript

const url = "https://api.deepinfo.com/v1/lookup/whois?domain=nic.xn--yfro4i67o";

const response = await fetch(url, {
  method: "GET",
  headers: {
    "apikey": "YOUR_API_KEY",
    "Accept": "application/json"
  },
});

const data = await response.json();
console.log(data);

package main

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

func main() {
	req, err := http.NewRequest("GET", "https://api.deepinfo.com/v1/lookup/whois?domain=nic.xn--yfro4i67o", nil)
	if err != nil {
		panic(err)
	}
	req.Header.Set("apikey", "YOUR_API_KEY")
	req.Header.Set("Accept", "application/json")

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

	body, err := io.ReadAll(res.Body)
	if err != nil {
		panic(err)
	}
	fmt.Println(string(body))
}

Java

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

public class Main {
    public static void main(String[] args) throws Exception {
        HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create("https://api.deepinfo.com/v1/lookup/whois?domain=nic.xn--yfro4i67o"))
            .header("apikey", "YOUR_API_KEY")
            .header("Accept", "application/json")
            .GET()
            .build();

        HttpResponse<String> response = HttpClient.newHttpClient()
            .send(request, HttpResponse.BodyHandlers.ofString());

        System.out.println(response.body());
    }
}

using System;
using System.Net.Http;

using var client = new HttpClient();

var request = new HttpRequestMessage(HttpMethod.Get, "https://api.deepinfo.com/v1/lookup/whois?domain=nic.xn--yfro4i67o");
request.Headers.Add("apikey", "YOUR_API_KEY");
request.Headers.Add("Accept", "application/json");

using var response = await client.SendAsync(request);
Console.WriteLine(await response.Content.ReadAsStringAsync());

PHP

<?php

$curl = curl_init();

curl_setopt_array($curl, [
    CURLOPT_URL => 'https://api.deepinfo.com/v1/lookup/whois?domain=nic.xn--yfro4i67o',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => [
        'apikey: YOUR_API_KEY',
        'Accept: application/json',
    ],
]);

$response = curl_exec($curl);

if ($response === false) {
    throw new RuntimeException(curl_error($curl));
}

echo $response . PHP_EOL;

Ruby

require 'net/http'
require 'uri'

uri = URI('https://api.deepinfo.com/v1/lookup/whois?domain=nic.xn--yfro4i67o')

request = Net::HTTP::Get.new(uri)
request['apikey'] = 'YOUR_API_KEY'
request['Accept'] = 'application/json'

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: uri.scheme == 'https') do |http|
  http.request(request)
end

puts response.body

Response

200 OK · application/json

Response Body

{
  "domain_name": "nic.xn--yfro4i67o",
  "raw": "{\n  \"rdapConformance\" : [ \"icann_rdap_response_profile_0\", \"icann_rdap_technical_implementation_guide_0\", \"rdap_level_0\" ],\n  \"notices\" : [ {\n    \"title\" : \"Terms of Service\",\n    \"description\" : [ \"Service subject to Terms of Use.\" ],\n    \"links\" : [ {\n      \"rel\" : \"related\",\n      \"href\" : \"https://sgnic.sg/domain-registration/policies-agreements/revised-policy-documents\",\n      \"type\" : \"text/html\"\n    } ]\n  }, {\n    \"title\" : \"RDDS Inaccuracy Complaint Form\",\n    \"description\" : [ \"URL of the ICANN RDDS Inaccuracy Complaint Form: https://icann.org/wicf\" ],\n    \"links\" : [ {\n      \"rel\" : \"related\",\n      \"href\" : \"https://icann.org/wicf\",\n      \"type\" : \"text/html\"\n    } ]\n  }, {\n    \"title\" : \"Legal Notice\",\n    \"description\" : [ \"----------------------------------------------------------------------\\nSGNIC WHOIS Server\\n----------------------------------------------------------------------\\n\\nThis data is provided for information purposes only.\" ],\n    \"links\" : [ {\n      \"rel\" : \"related\",\n      \"href\" : \"\",\n      \"type\" : \"text/html\"\n    } ]\n  } ],\n  \"errorCode\" : 404,\n  \"title\" : \"01044\",\n  \"description\" : [ \"The domain name requested has usage restrictions applied to it. Please see your Registrar for more details.\" ]\n}",
  "parsed": null,
  "check_date": "2026-09-23T17:23:19Z",
  "parse_code": 13001
}

The raw field of this response, line by line.

Raw WHOIS Text

{
  "rdapConformance" : [ "icann_rdap_response_profile_0", "icann_rdap_technical_implementation_guide_0", "rdap_level_0" ],
  "notices" : [ {
    "title" : "Terms of Service",
    "description" : [ "Service subject to Terms of Use." ],
    "links" : [ {
      "rel" : "related",
      "href" : "https://sgnic.sg/domain-registration/policies-agreements/revised-policy-documents",
      "type" : "text/html"
    } ]
  }, {
    "title" : "RDDS Inaccuracy Complaint Form",
    "description" : [ "URL of the ICANN RDDS Inaccuracy Complaint Form: https://icann.org/wicf" ],
    "links" : [ {
      "rel" : "related",
      "href" : "https://icann.org/wicf",
      "type" : "text/html"
    } ]
  }, {
    "title" : "Legal Notice",
    "description" : [ "----------------------------------------------------------------------\nSGNIC WHOIS Server\n----------------------------------------------------------------------\n\nThis data is provided for information purposes only." ],
    "links" : [ {
      "rel" : "related",
      "href" : "",
      "type" : "text/html"
    } ]
  } ],
  "errorCode" : 404,
  "title" : "01044",
  "description" : [ "The domain name requested has usage restrictions applied to it. Please see your Registrar for more details." ]
}

Content-Type: application/json
ratelimit-limit: 10
ratelimit-remaining: 9
ratelimit-reset: 1
x-ratelimit-limit-second: 10
x-ratelimit-remaining-second: 9
deepinfo-request-id: 5f0c6a8e-1b2d-4c3e-9f4a-7b8c9d0e1f2a

Request

What this example sends. Every parameter is documented on Domain WHOIS; the exact request is in the code panel.

Parameter	Value
`domain`query	`nic.xn--yfro4i67o`

Reference updated September 24, 2026

Request

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