Domain WHOIS Examples by TLD · Example 54 of 231 in Country-Code

WHOIS for .cz (nic.cz)

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

The WHOIS record of nic.cz, in the .cz registry's format.

TLD: .cz
Type: country-code

.cz is the country-code top-level domain of Czechia.

The example requests the WHOIS record of nic.cz, the registry's own domain by convention, so the response shows the .cz registry's WHOIS format: compare raw, the text as the WHOIS server returned it, with parsed, the same record in Deepinfo's fields.

Request

curl

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

Python

import requests

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

params = {
    "domain": "nic.cz"
}

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.cz";

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.cz", 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.cz"))
            .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.cz");
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.cz',
    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.cz')

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

Shortened for this page: raw: first 4,000 of 4,864 characters

Response Body

{
  "domain_name": "nic.cz",
  "raw": "{\"objectClassName\": \"domain\", \"rdapConformance\": [\"rdap_level_0\", \"fred_version_0\"], \"handle\": \"nic.cz\", \"ldhName\": \"nic.cz\", \"links\": [{\"value\": \"https://rdap.nic.cz/domain/nic.cz\", \"rel\": \"self\", \"href\": \"https://rdap.nic.cz/domain/nic.cz\", \"type\": \"application/rdap+json\"}], \"port43\": \"whois.nic.cz\", \"events\": [{\"eventAction\": \"registration\", \"eventDate\": \"1997-10-30T00:00:00+00:00\"}, {\"eventAction\": \"expiration\", \"eventDate\": \"2027-03-14T23:00:00+00:00\"}, {\"eventAction\": \"last changed\", \"eventDate\": \"2020-11-17T13:25:52+00:00\"}, {\"eventAction\": \"transfer\", \"eventDate\": \"2007-02-28T13:55:00+00:00\"}], \"entities\": [{\"objectClassName\": \"entity\", \"handle\": \"CZ-NIC\", \"roles\": [\"registrant\"], \"links\": [{\"value\": \"https://rdap.nic.cz/entity/CZ-NIC\", \"rel\": \"self\", \"href\": \"https://rdap.nic.cz/entity/CZ-NIC\", \"type\": \"application/rdap+json\"}]}, {\"objectClassName\": \"entity\", \"handle\": \"REG-CZNIC\", \"roles\": [\"registrar\"]}, {\"objectClassName\": \"entity\", \"handle\": \"FEELA\", \"roles\": [\"administrative\"], \"links\": [{\"value\": \"https://rdap.nic.cz/entity/FEELA\", \"rel\": \"self\", \"href\": \"https://rdap.nic.cz/entity/FEELA\", \"type\": \"application/rdap+json\"}]}, {\"objectClassName\": \"entity\", \"handle\": \"MAPET\", \"roles\": [\"administrative\"], \"links\": [{\"value\": \"https://rdap.nic.cz/entity/MAPET\", \"rel\": \"self\", \"href\": \"https://rdap.nic.cz/entity/MAPET\", \"type\": \"application/rdap+json\"}]}], \"status\": [\"server transfer prohibited\"], \"nameservers\": [{\"objectClassName\": \"nameserver\", \"handle\": \"a.ns.nic.cz\", \"ldhName\": \"a.ns.nic.cz\", \"links\": [{\"value\": \"https://rdap.nic.cz/nameserver/a.ns.nic.cz\", \"rel\": \"self\", \"href\": \"https://rdap.nic.cz/nameserver/a.ns.nic.cz\", \"type\": \"application/rdap+json\"}], \"ipAddresses\": {\"v4\": [\"194.0.12.1\"], \"v6\": [\"2001:678:f::1\"]}}, {\"objectClassName\": \"nameserver\", \"handle\": \"b.ns.nic.cz\", \"ldhName\": \"b.ns.nic.cz\", \"links\": [{\"value\": \"https://rdap.nic.cz/nameserver/b.ns.nic.cz\", \"rel\": \"self\", \"href\": \"https://rdap.nic.cz/nameserver/b.ns.nic.cz\", \"type\": \"application/rdap+json\"}], \"ipAddresses\": {\"v4\": [\"194.0.13.1\"], \"v6\": [\"2001:678:10::1\"]}}, {\"objectClassName\": \"nameserver\", \"handle\": \"d.ns.nic.cz\", \"ldhName\": \"d.ns.nic.cz\", \"links\": [{\"value\": \"https://rdap.nic.cz/nameserver/d.ns.nic.cz\", \"rel\": \"self\", \"href\": \"https://rdap.nic.cz/nameserver/d.ns.nic.cz\", \"type\": \"application/rdap+json\"}], \"ipAddresses\": {\"v4\": [\"193.29.206.1\"], \"v6\": [\"2001:678:1::1\"]}}], \"fred_nsset\": {\"objectClassName\": \"fred_nsset\", \"handle\": \"CZ.NIC\", \"links\": [{\"value\": \"https://rdap.nic.cz/fred_nsset/CZ.NIC\", \"rel\": \"self\", \"href\": \"https://rdap.nic.cz/fred_nsset/CZ.NIC\", \"type\": \"application/rdap+json\"}], \"nameservers\": [{\"objectClassName\": \"nameserver\", \"handle\": \"a.ns.nic.cz\", \"ldhName\": \"a.ns.nic.cz\", \"links\": [{\"value\": \"https://rdap.nic.cz/nameserver/a.ns.nic.cz\", \"rel\": \"self\", \"href\": \"https://rdap.nic.cz/nameserver/a.ns.nic.cz\", \"type\": \"application/rdap+json\"}], \"ipAddresses\": {\"v4\": [\"194.0.12.1\"], \"v6\": [\"2001:678:f::1\"]}}, {\"objectClassName\": \"nameserver\", \"handle\": \"b.ns.nic.cz\", \"ldhName\": \"b.ns.nic.cz\", \"links\": [{\"value\": \"https://rdap.nic.cz/nameserver/b.ns.nic.cz\", \"rel\": \"self\", \"href\": \"https://rdap.nic.cz/nameserver/b.ns.nic.cz\", \"type\": \"application/rdap+json\"}], \"ipAddresses\": {\"v4\": [\"194.0.13.1\"], \"v6\": [\"2001:678:10::1\"]}}, {\"objectClassName\": \"nameserver\", \"handle\": \"d.ns.nic.cz\", \"ldhName\": \"d.ns.nic.cz\", \"links\": [{\"value\": \"https://rdap.nic.cz/nameserver/d.ns.nic.cz\", \"rel\": \"self\", \"href\": \"https://rdap.nic.cz/nameserver/d.ns.nic.cz\", \"type\": \"application/rdap+json\"}], \"ipAddresses\": {\"v4\": [\"193.29.206.1\"], \"v6\": [\"2001:678:1::1\"]}}]}, \"secureDNS\": {\"zoneSigned\": true, \"delegationSigned\": true, \"keyData\": [{\"flags\": 257, \"protocol\": 3, \"algorithm\": 13, \"publicKey\": \"Hpu4xfZJ43G2gen4cJOZ4DFhaXFaMxLPa+dBceqkbdIaqADX9JLHW/CNpPV+GtgAMc2kHgNEJTaSAUhYG41tvQ==\"}], \"maxSigLife\": 1209600}, \"fred_keyset\": {\"objectClassName\": \"fred_keyset\", \"handle\": \"AUTO-ZHHWRIDCGH9F46ZDG2K2VC284\", \"links\": [{\"value\": \"https://rdap.nic…",
  "parsed": {
    "uid": "c006f34342d195c558c7eec8ccfe65e9",
    "create_date": "1997-10-30T00:00:00Z",
    "update_date": "2020-11-17T13:25:52Z",
    "expiry_date": "2027-03-14T23:00:00Z",
    "registrar": "reg-cznic",
    "registrant": null,
    "name_servers": [
      "a.ns.nic.cz",
      "b.ns.nic.cz",
      "d.ns.nic.cz"
    ],
    "domain_status": [
      "servertransferprohibited"
    ],
    "whois_server": "whois.nic.cz"
  },
  "check_date": "2026-09-23T17:02:09Z",
  "parse_code": null
}

Content-Type: application/json
ratelimit-limit: 10
ratelimit-remaining: 8
ratelimit-reset: 1
x-ratelimit-limit-second: 10
x-ratelimit-remaining-second: 8
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.cz`

Reference updated September 24, 2026

Request

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