Pricing

$2.00 / 1,000 domain checks

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Domain Availability Checker API: Bulk RDAP Lookup

Try for free

Is the domain free? Check single domains or one name across many TLDs (.com, .co.uk, .ai, .io...) via official registry RDAP: available, or registered with registrar, creation and expiry dates.

Pricing

$2.00 / 1,000 domain checks

Rating

0.0

(0)

Developer

Tudor Lane

Actor stats

Bookmarked

Total users

Monthly active users

3 days ago

Last modified

Categories

Developer tools

Security

Use when: an AI agent or app naming a product, brand or startup needs to know if domains are free, across many TLDs at once, straight from the official registries (with registrar, creation and expiry dates for taken ones).

Try this input (also the default, just click Start)

{"requests": ["google.com", {"name": "tudorlanepress", "tlds": ["com", "co.uk", "io"]}]}

Sample output (real run, 3 Nov 2026, trimmed)

{"domain": "google.com", "available": false, "status": "registered", "registered": "1997-09-15", "expires": "2028-09-14", "registrar": "MarkMonitor Inc.", "checks": 1, "error": null}
{"name": "tudorlanetools", "available": ["tudorlanetools.com", "tudorlanetools.co.uk", "tudorlanetools.ai"],
 "results": [{"domain": "tudorlanetools.io", "available": null, "status": "unknown", "reason": ".io registry has no public RDAP; check with a registrar"}], "checks": 5, "error": null}

Options

A plain string: one full domain.
name + tlds: one name across many TLDs (default 18 popular ones: com, net, org, io, ai, co, app, dev, co.uk, de, eu, shop...).

Status is available, registered or unknown. Registered rows add registrar, registered, expires, registry_status (e.g. clientHold, pendingDelete). No API key needed.

Pricing: pay per event, $0.002 per domain checked at its registry. Rows with errors are not charged. No subscription.

Limits & failure modes

Some ccTLDs have no public RDAP (.io and .de in testing) and return unknown; check those with a registrar.
"Available" means not registered at the registry; premium or reserved names may still be blocked or priced higher.
Not a registrar: it does not buy or hold domains.

Last tested: 3 Nov 2026.

Use from AI agents (MCP)

Apify MCP server: add https://mcp.apify.com/?tools=tudorlane/domain-availability to Claude, Cursor, ChatGPT, VS Code or any MCP client.
REST: POST https://api.apify.com/v2/acts/tudorlane~domain-availability/run-sync-get-dataset-items?token=YOUR_TOKEN with the input JSON.

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