Domain Availability Checker data API: fields, sample output and cost per 1,000 rows

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 is the reference for the Actor v0iddo/domain-availability-checker: what is in every output row, what the input takes, and what a run costs. Values below come from a real run of the Actor.

At a glance

Actor	v0iddo/domain-availability-checker
Store page	Domain Availability Checker
Output	one row per result, as JSON, CSV, Excel or HTML
Fields per row	14 (8 text, 2 date, 2 number, 1 list, 1 true/false)
Cap on results	maxItems in the input
Price	$1.00 per 1,000 results

Output fields

Each result is one row with these fields (fields that name people are left out):

Field	Type	Meaning	Sample value
domain	text	Domain	google.com
available	true/false	Available	false
status	text	Status	registered
registrar	text	Registrar	MarkMonitor Inc.
expirationDate	date	Expires	2028-09-14T04:00:00Z
daysToExpiry	number	Days to expiry	687
registrationDate	date	Registered	1997-09-15T04:00:00Z
note	text	Note
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

One record

{
  "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 parameters

Parameter	Type	Required	Default	What it does
domains	array	yes	["google.com", "github.com", "wikipedia.org", "python.org", "mozill...	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	no	1000	The run stops after this many result rows.

Ready-made examples

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

• Domain availability checker: one name in 6 extensions
• Domain name checker for 10 brand name ideas in .com
• Domain expiry checker: expiry dates of 10 well known sites

Cost per 1,000 rows

$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.

Results	Cost at the listed price	Cost at the lowest plan price
100	$0.10	$0.07
1,000	$1.00	$0.70
10,000	$10.00	$7.00
100,000	$100.00	$70.00

The figures are the listed price times the number of results. The maxItems limit and the maximum cost setting in the run options both stop a run before it spends more than you planned.

Get the rows as CSV over HTTP

One request starts a run, waits for it and returns the dataset. The format parameter picks the file type and fields picks the columns. Replace the token with the one from Apify Console, Settings, Integrations.

curl -X POST "https://api.apify.com/v2/acts/v0iddo~domain-availability-checker/run-sync-get-dataset-items?format=csv&fields=domain,available,status" \
  -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.

Links

• Actor on the Apify Store: Domain Availability Checker
• Guide with the Python and JavaScript code: https://voidd0.github.io/domain-availability-checker/