Can I register every domain marked available?

Confirm with a registrar before checkout. An unregistered name can still be reserved or restricted by the registry.

Is every call a fresh registry request?

Registered results can be reused for up to one hour, and unregistered results for up to five minutes. After that, a lookup checks the registry again. If the check cannot complete, available returns null.

Registration details: registrar, creation, update and expiry dates, status, and DNSSEC registration information. Deep is included on paid plans.

Where do I look up DNS records?

Use GET /dns/{domain} for DNS records and TTLs, or GET /mx/{domain} for the ordered mail server list.

GET /domain/{domain}

Domain API

Find out whether a domain is registered.

Example response/domain/gmail.com

{
  "domain": "gmail.com",
  "available": false,
  ?deep=true
}

See a registration example

The registrar and registration dates. Included on paid plans.

Example · /domain/gmail.com?deep=true

{
  "deep": {
    "registration": {
      "registered": true,
      "created": "1995-08-13T04:00:00.000Z",
      "updated": "2026-07-11T10:11:23.000Z",
      "expires": "2027-08-12T04:00:00.000Z",
      "registrar": "MarkMonitor Inc.",
      "status": [
        "client delete prohibited",
        "client transfer prohibited",
        "client update prohibited",
        "server delete prohibited",
        "server transfer prohibited",
        "server update prohibited"
      ],
      "dnssec": false
    }
  }
}

1M requests · $20/mo. Get started

What comes back.

available

true if unregistered, false if taken, null if the registration check is unavailable

deep.registration

Registration check details. Unregistered domains include registered: false and omit the other details. Omitted when the check is unavailable

Pass a domain

Availability comes back on every call.

Read the result

Registered, unregistered, or unknown when the check is unavailable.

Get more context

Paid deep adds the registrar, registration dates, and status.

Coverage

Domain registration status. Paid deep adds registrar, dates, and status.

Check a domain's registration status. available is true when the registry reports no registration, false when it is registered, and null when the check is unavailable. Results are cached.

On paid plans, deep adds registration details: registrar, creation and expiry dates, and status. Use /dns/{domain} for DNS records or /mx/{domain} for mail routing.

SPEED

How long /domain takes.

Median time to first byte over the last seven days. Warm requests, measured every 30 minutes. Live verification and other request variants can take longer.

305ms

461ms

APAC

334ms

LatAm

230ms

224ms

See live status →

Make your first request.

One key works across the APIs. Copy a request in your language and get JSON back.

curl "https://api.parseapi.com/domain/gmail.com" \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Parse-Version: 2.0.0"

// Example response · 200
{
  "domain": "gmail.com",
  "available": false
}

API reference SDKs Keys and authentication

Every response field

Response fields

domainstring: Hostname checked
availableboolean or null: true if unregistered, false if taken, null if the registration check is unavailable

Deep fields

deep.registrationobject: Registration check details. Unregistered domains include registered: false and omit the other details. Omitted when the check is unavailable
deep.registration.registeredboolean: Whether the domain was registered at the cached check. False does not guarantee a registrar will sell it
deep.registration.createdstring or null: Registry registration timestamp, or null when unknown. Omitted for an unregistered domain
deep.registration.updatedstring or null: Registry last-change timestamp, or null when unknown. Omitted for an unregistered domain
deep.registration.expiresstring or null: Registry expiration timestamp, or null when unknown. Omitted for an unregistered domain
deep.registration.registrarstring or null: Reported registrar name, or null when unknown. Omitted for an unregistered domain
deep.registration.statusarray: Reported registration status codes. Empty when none are reported. Omitted for an unregistered domain
deep.registration.dnssecboolean: Whether the registry reports a signed DNS delegation. Omitted for an unregistered domain

QUESTIONS

What comes back on every call?: The domain and available: true when the registry reports no registration, false when it is registered, or null when the check is unavailable.
Can I register every domain marked available?: Confirm with a registrar before checkout. An unregistered name can still be reserved or restricted by the registry.
Is every call a fresh registry request?: Registered results can be reused for up to one hour, and unregistered results for up to five minutes. After that, a lookup checks the registry again. If the check cannot complete, available returns null.
What does deep add?: Registration details: registrar, creation, update and expiry dates, status, and DNSSEC registration information. Deep is included on paid plans.
Where do I look up DNS records?: Use GET /dns/{domain} for DNS records and TTLs, or GET /mx/{domain} for the ordered mail server list.

Check one domain with the domain availability checker or a whole file with bulk domain lookup.

Is it taken?

Domain availability on every plan. Registration details on paid plans.

Start includes 1M API requests a month for $20/mo.

Ready for busy moments.Start includes 1,800 requests per minute, with extra capacity for bursts. Rate limits

Get started Compare plans Read the docs