{
"domain": "example.com",
"query": "example.com",
"registered": true,
"registrar": "RESERVED-Internet Assigned Numbers Authority",
"created": "1995-08-14T04:00:00.000Z",
"updated": "2026-08-14T08:01:43.000Z",
"expires": "2027-08-13T04:00:00.000Z",
"domain_age_days": 11410,
"nameservers": [
"elliott.ns.cloudflare.com",
"hera.ns.cloudflare.com"
],
"status": [
"client delete prohibited",
"client transfer prohibited",
"client update prohibited"
],
"dnssec": true,
"raw_rdap_url": "https://rdap.verisign.com/com/v1/domain/example.com",
"source": "rdap",
"cached": true,
"ms": 36
}
curl --location --request GET 'https://zylalabs.com/api/14811/domain+lookup+whois+and+age+api/38392/whois+lookup?domain=example.com' --header 'Authorization: Bearer YOUR_API_KEY'
{
"domain": "example.com",
"query": "example.com",
"registered": true,
"created": "1995-08-14T04:00:00.000Z",
"domain_age_days": 11410,
"source": "rdap",
"cached": true,
"ms": 36
}
curl --location --request GET 'https://zylalabs.com/api/14811/domain+lookup+whois+and+age+api/38393/domain+age?domain=example.com' --header 'Authorization: Bearer YOUR_API_KEY'
{
"domain": "brand-new-name-example.com",
"query": "brand-new-name-example.com",
"available": true,
"registered": false,
"dns": {
"resolves": false,
"status": "NXDOMAIN",
"nameservers": []
},
"source": "rdap",
"cached": false,
"ms": 252
}
curl --location --request GET 'https://zylalabs.com/api/14811/domain+lookup+whois+and+age+api/38394/domain+availability?domain=brand-new-name-example.com' --header 'Authorization: Bearer YOUR_API_KEY'
After signing up, every developer is assigned a personal API access key, a unique combination of letters and digits provided to access to our API endpoint. To authenticate with the Domain Lookup WHOIS and Age API simply include your bearer token in the Authorization header.
| Header | Description |
|---|---|
Authorization
|
Required
Should be Bearer access_key. See "Your API Access Key" above when you are subscribed.
|
No long-term commitment. Upgrade, downgrade, or cancel anytime.
RDAP-first WHOIS, domain age, and availability as stable JSON. One registry request on a cache miss, served from Cloudflare's edge. Registrant contacts omitted on purpose.
No. Registrant name, email, and phone are omitted on purpose.
Results are cached for about 6 hours on a warm hit.
The WHOIS lookup returns registrar info, registration dates, domain age, nameservers, status flags, and DNSSEC. The Domain age endpoint provides the created date and domain age in days. The Domain availability endpoint checks if a domain is available and includes a DNS resolve summary. The Bulk Domain Lookup allows querying WHOIS/RDAP data for multiple domains simultaneously.
Key fields include "domain," "registered," "registrar," "created," "updated," "expires," "domain_age_days," "nameservers," "status," "dnssec," and "source." Each endpoint has specific fields relevant to its function, such as "available" for the Domain availability endpoint.
The response data is structured in JSON format, with key-value pairs for easy parsing. Each endpoint's response includes relevant fields grouped logically, such as domain details, registration status, and DNS information, allowing users to quickly access needed data.
The WHOIS lookup provides comprehensive domain registration details, while the Domain age endpoint focuses on registration dates and age. The Domain availability endpoint checks if a domain is free, and the Bulk Domain Lookup retrieves data for multiple domains in one request.
Users can customize requests by specifying the domain name in the query parameter for each endpoint. For the Bulk Domain Lookup, users can provide a list of up to 20 domains to retrieve data in a single call, streamlining the process for multiple queries.
The API primarily sources its data from RDAP (Registration Data Access Protocol) registries, ensuring up-to-date and accurate information. The data is served from Cloudflare's edge, enhancing response times and reliability.
Typical use cases include checking domain availability for registration, analyzing domain age for SEO purposes, and retrieving WHOIS information for domain management or research. Businesses and developers often use this data for domain acquisition strategies.
Users can leverage the returned data for various applications, such as monitoring domain status, assessing domain age for investment decisions, or integrating domain availability checks into web applications. Understanding the meaning of fields like "status" and "dnssec" helps in making informed decisions.
To obtain your API key, first sign in to your account and navigate to the API you want to use. From the API's Pricing section, choose a plan and complete the subscription process. Once subscribed, return to the API page and you will see your API Access Key displayed at the top of the documentation page. You can use this key to authenticate your requests.
You can’t switch APIs during the free trial. If you subscribe to a different API, your trial will end and the new subscription will start as a paid plan.
The free trial lasts for 7 days and allows you to make up to 50 API requests.
No, the free trial is available only once, so we recommend using it on the API that interests you the most. Most of our APIs offer a free trial, but some may not include this option.
Yes. If the API offers a free trial, you will see a "Free 7-Day Trial" option in its Pricing section. The trial lasts for 7 days and allows up to 50 API requests, enabling you to evaluate the API before subscribing to a paid plan.
Zyla API Hub is like a big store for APIs, where you can find thousands of them all in one place. We also offer dedicated support and real-time monitoring of all APIs. Once you sign up, you can pick and choose which APIs you want to use. Just remember, each API needs its own subscription. But if you subscribe to multiple ones, you'll use the same key for all of them, making things easier for you.
You can monitor your API usage through the response headers included with every request:
x-zyla-api-calls-monthly-used: Shows the total number of API requests you have used during the current billing period.
x-zyla-api-calls-monthly-remaining: Shows the number of API requests you have remaining for the current billing period.
Yes, you can cancel your subscription at any time. Simply go to the Pricing section of the API you're subscribed to and click the "Unsubscribe" button.
Please note that upgrades, downgrades, and cancellations take effect immediately. Once your subscription is canceled, access to the service will end immediately, regardless of any remaining API calls in your quota.
Please have a look at our Refund Policy: https://zylalabs.com/terms#refund