Domain Availability Checker: how to get Bulk RDAP as JSON/CSV (API, Python, no code)

Q: How do I use the Domain Availability Checker from Python?

Install the apify-client package, create a client with your Apify API token, call the Actor v0iddo/domain-availability-checker with an input like the one above, and read the rows from the run's dataset. The Python snippet above does exactly that.

Q: How do I limit the number of results?

Set the maxItems input field to the number of results you need; the run stops there, so it also caps the cost of one run. You can also set a maximum cost for a run in the run options on Apify, and the run stops when it is reached.

Check if domains are available, in bulk: one row per domain with available or registered, registrar, creation and expiry dates and days to expiry, straight from the registry that runs the TLD (RDAP). This guide shows the output fields, a working input, and Python, JavaScript and cURL code for the Actor v0iddo/domain-availability-checker on Apify.

Open Domain Availability Checker on Apify

What data you get

One row per result. Every row can be downloaded as JSON, CSV, Excel or HTML, or read through the API.

Field	Label	Type	Example
`domain`	Domain	text	google.com
`available`	Available	true/false	false
`status`	Status	text	registered
`registrar`	Registrar	text	MarkMonitor Inc.
`expirationDate`	Expires	date	2028-09-14T04:00:00Z
`daysToExpiry`	Days to expiry	number	687
`registrationDate`	Registered	date	1997-09-15T04:00:00Z
`note`	Note	text
`input`		text	google.com
`tld`		text	com
`ageDays`		number	10634
`domainStatus`		list	["client delete prohibited", "client transfer prohibited", "client ...
`registry`		text	https://rdap.verisign.com/com/v1/
`checkedAt`		text	2026-10-27T10:31:50+00:00

Input example

This is the input that is pre-filled on the Actor page. Change the values for your own run.

{
  "domains": [
    "google.com",
    "github.com",
    "wikipedia.org",
    "python.org",
    "mozilla.org",
    "voiddo.com",
    "bbc.co.uk",
    "example.net",
    "voiddo-availability-sample-7q3.com",
    "voiddo-availability-sample-7q3.org",
    "shop.github.com"
  ],
  "maxItems": 20
}

Input field	Type	What it does
`domains` (required)	array	Domain names such as example.com or links such as https://www.example.com/page (the domain is taken from the link, www.
`maxItems`	integer	The run stops after this many result rows.

Output sample

Real rows from a run of the Actor. Fields that name people are left out of the sample.

[
  {
    "input": "google.com",
    "domain": "google.com",
    "tld": "com",
    "available": false,
    "status": "registered",
    "registrar": "MarkMonitor Inc.",
    "registrationDate": "1997-09-15T04:00:00Z",
    "expirationDate": "2028-09-14T04:00:00Z",
    "daysToExpiry": 687,
    "ageDays": 10634,
    "domainStatus": [
      "client delete prohibited",
      "client transfer prohibited",
      "client update prohibited"
    ],
    "registry": "https://rdap.verisign.com/com/v1/",
    "checkedAt": "2026-10-27T10:31:50+00:00"
  },
  {
    "input": "github.com",
    "domain": "github.com",
    "tld": "com",
    "available": false,
    "status": "registered",
    "registrar": "MarkMonitor Inc.",
    "registrationDate": "2007-10-09T18:20:50Z",
    "expirationDate": "2028-10-09T18:20:50Z",
    "daysToExpiry": 713,
    "ageDays": 6957,
    "domainStatus": [
      "client delete prohibited",
      "client transfer prohibited",
      "client update prohibited"
    ],
    "registry": "https://rdap.verisign.com/com/v1/",
    "checkedAt": "2026-10-27T10:31:50+00:00"
  }
]

Code: Python, JavaScript and cURL

Get your API token in Apify Console under Settings, then Integrations. The Actor id is v0iddo/domain-availability-checker.

Python (apify-client)

from apify_client import ApifyClient

client = ApifyClient("YOUR_APIFY_TOKEN")

run_input = {'domains': ['google.com',
             'github.com',
             'wikipedia.org',
             'python.org',
             'mozilla.org',
             'voiddo.com',
             'bbc.co.uk',
             'example.net',
             'voiddo-availability-sample-7q3.com',
             'voiddo-availability-sample-7q3.org',
             'shop.github.com'],
 'maxItems': 20}

run = client.actor("v0iddo/domain-availability-checker").call(run_input=run_input)
for item in client.dataset(run["defaultDatasetId"]).iterate_items():
    print(item)

JavaScript (apify-client)

import { ApifyClient } from 'apify-client';

const client = new ApifyClient({ token: 'YOUR_APIFY_TOKEN' });

const input = {
  "domains": [
    "google.com",
    "github.com",
    "wikipedia.org",
    "python.org",
    "mozilla.org",
    "voiddo.com",
    "bbc.co.uk",
    "example.net",
    "voiddo-availability-sample-7q3.com",
    "voiddo-availability-sample-7q3.org",
    "shop.github.com"
  ],
  "maxItems": 20
};

const run = await client.actor('v0iddo/domain-availability-checker').call(input);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
console.log(items);

cURL

curl -X POST "https://api.apify.com/v2/acts/v0iddo~domain-availability-checker/run-sync-get-dataset-items" \
  -H "Authorization: Bearer YOUR_APIFY_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"domains": ["google.com", "github.com", "wikipedia.org", "python.org", "mozilla.org", "voiddo.com", "bbc.co.uk", "example.net", "voiddo-availability-sample-7q3.com", "voiddo-availability-sample-7q3.org", "shop.github.com"], "maxItems": 20}'

Price

$1.00 per 1,000 results. You pay per result row. There is no separate charge per run. Higher Apify plans pay less per result, down to $0.70 per 1,000. See the pricing tab for your plan. A new Apify account gets $5 of platform credit every month.

Good to know

Available means not registered at the registry. A reserved or premium name can still be refused or cost more at a registrar.
A TLD without an RDAP service, or a registry that closes its RDAP service in robots.txt, gives status unknown with the reason. No guessing from DNS.
A name under a registered domain (shop.example.com) gives status subdomain: it cannot be registered on its own.
Answered: .com, .net, .org, .app, .dev, .page, .info, .biz, .club, .fr, .nl, .ca, .au and every other extension whose registry runs an open RDAP service. Not answered (status unknown): .io, .de...

FAQ

What data does the Domain Availability Checker return?

Each result is one row in an Apify dataset. Fields include domain, available, status, registrar, expirationDate, daysToExpiry, registrationDate, note, and more. The table above shows every field with an example value.

How do I use the Domain Availability Checker from Python?

Install the apify-client package, create a client with your Apify API token, call the Actor v0iddo/domain-availability-checker with an input like the one above, and read the rows from the run's dataset. The Python snippet above does exactly that.

Can I use it without writing code?

Yes. Open the Actor page on Apify, fill in the input form (an example is already filled in), press Start, and download the results as JSON, CSV, Excel or HTML. You can also schedule runs there.

How much does it cost?

$1.00 per 1,000 results. You pay per result row. There is no separate charge per run. Higher Apify plans pay less per result, down to $0.70 per 1,000. A new Apify account gets $5 of platform credit every month.

How do I limit the number of results?

Set the maxItems input field to the number of results you need; the run stops there, so it also caps the cost of one run. You can also set a maximum cost for a run in the run options on Apify, and the run stops when it is reached.

Can I send the results to Google Sheets, Make, Zapier or n8n?

Yes. Apify datasets connect to Google Sheets, Slack, Make, Zapier and n8n, and a webhook can call your own service when a run finishes. You can also export the dataset as JSON, CSV or Excel.

Open Domain Availability Checker on Apify

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