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Posted on Nov 1 Originally published at voidd0.github.io

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

#webscraping #python #api #datascience

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 tutorial shows what the Actor v0iddo/domain-availability-checker returns, how to run it on the Apify Store without code, and how to call it from Python and cURL.

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`	input	text	google.com
`tld`	tld	text	com
`ageDays`	ageDays	number	10634
`domainStatus`	domainStatus	list	["client delete prohibited", "client transfer prohibited", "client ...
`registry`	registry	text	https://rdap.verisign.com/com/v1/
`checkedAt`	checkedAt	text	2026-10-27T10:31:50+00:00

Real rows from a run of the Actor (fields that name people are left out):

[
  {
    "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"
  }
]

No code: run it on the Apify Store

Open the Domain Availability Checker page on Apify.
Fill in the input form. An example input is already filled in.
Press Start, wait for the run to finish, and download the results as JSON, CSV or Excel from the Output tab.

The input that is pre-filled on the Actor page:

{
  "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
}

Ready-made examples

Saved inputs on Apify: run one as it is, or copy it and change the values.

Python (apify-client)

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

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)

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}'

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.

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.

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.

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.

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