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from $10.00 / 1,000 subdomains

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Subdomain Finder: Certificate Transparency Scan

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Find subdomains of any domain from Certificate Transparency (crt.sh) logs: hostnames, first and last seen, wildcard and valid-cert flags, issuer summary per domain. Export CSV, Excel, JSON. No login or API key. Example: mercadolibre.com returned 129 subdomains from 624 certificates.

Pricing

from $10.00 / 1,000 subdomains

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Monthly active users

9 days ago

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SEO tools

You can access the Subdomain Finder: Certificate Transparency Scan programmatically from your own applications by using the Apify API. You can also choose the language preference from below. To use the Apify API, you’ll need an Apify account and your API token, found in API & Integrations in Apify Console.

Python

JavaScript

CLI

OpenAPI

HTTP

MCP

1from apify_client import ApifyClient
2
3# Initialize the ApifyClient with your Apify API token
4# Replace '<YOUR_API_TOKEN>' with your token.
5client = ApifyClient("<YOUR_API_TOKEN>")
6
7# Prepare the Actor input
8run_input = {
9    "domains": ["example.org"],
10    "maxItems": 10,
11}
12
13# Run the Actor and wait for it to finish
14run = client.actor("recordsdata/subdomain-finder-scraper").call(run_input=run_input)
15
16# Fetch and print Actor results from the run's dataset (if there are any)
17print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
18for item in client.dataset(run.default_dataset_id).iterate_items():
19    print(item)
20
21# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

Subdomain Finder: Hostnames, Certs & Issuers API in Python

The Apify API client for Python is the official library that allows you to use Subdomain Finder: Certificate Transparency Scan API in Python, providing convenience functions and automatic retries on errors.

Install the apify-client

$pip install apify-client

Other API clients include:

Subdomain Finder: Certificate Transparency Scan API in JavaScript

Subdomain Finder: Certificate Transparency Scan API through CLI

Subdomain Finder: Certificate Transparency Scan OpenAPI definition

Subdomain Finder: Certificate Transparency Scan API

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