Daily Discovered Subdomains Feed Examples · Example 3 of 3

Daily Discovered Subdomains as Parquet

GEThttps://api.deepinfo.com/v1/feeds/daily-discovered-subdomains

The download link of the Daily Discovered Subdomains feed as Parquet: 1,749,538 lines, 125.0 MB, updated September 23, 2026.

Param: file_format
Value: parquet

Asks for the Daily Discovered Subdomains file in Parquet (file_format=parquet). The reference of file_format lists only csv and json, but the API accepts parquet too, as this response shows.

The current file, daily_discovered_subdomain_2026092310.zstd.parquet, has 1,749,538 lines (one per subdomain) and is 125.0 MB (file_size 124,994,891); it was last updated on September 23, 2026, 10:00 UTC.

Download the file from download_url within the hour; after that, request a new link.

Request

curl

curl 'https://api.deepinfo.com/v1/feeds/daily-discovered-subdomains?file_format=parquet' \
  -H 'apikey: YOUR_API_KEY' \
  -H 'Accept: application/json'

Python

import requests

url = "https://api.deepinfo.com/v1/feeds/daily-discovered-subdomains"

params = {
    "file_format": "parquet"
}

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/feeds/daily-discovered-subdomains?file_format=parquet";

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/feeds/daily-discovered-subdomains?file_format=parquet", 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/feeds/daily-discovered-subdomains?file_format=parquet"))
            .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/feeds/daily-discovered-subdomains?file_format=parquet");
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/feeds/daily-discovered-subdomains?file_format=parquet',
    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/feeds/daily-discovered-subdomains?file_format=parquet')

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

{
  "download_url": "https://storage.googleapis.com/dif-sd-ddis-1002/latest/daily_discovered_subdomain_2026092310.zstd.parquet?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=<redacted>&X-Amz-Date=20260924T075104Z&X-Amz-Expires=3600&X-Amz-SignedHeaders=host&X-Amz-Signature=<redacted>",
  "file_format": "parquet",
  "file_size": 124994891,
  "file_update_time": "2026-09-23T10:00:00Z",
  "line_count": 1749538
}

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 Daily Discovered Subdomains; the exact request is in the code panel.

Parameter	Value
`file_format`query	`parquet`

Reference updated September 24, 2026

Request

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