Overview

DomainsDB.info provides a searchable database of registered domain names, allowing you to find all domains containing specific keywords, phrases, or patterns across various TLDs. It is useful for brand monitoring, competitive research, and discovering domain availability trends. No authentication is required for basic searches.

Beginner Tip

This is a simple GET-based API — just pass a search term as a query parameter and receive a list of matching registered domains. It covers hundreds of TLDs and is updated regularly. Use the domain parameter to filter by keyword and zone to narrow by TLD (e.g., com).

Available Data

The kind of data this API exposes, based on its documentation. We could not call the endpoint to confirm the exact field names.

word definitions
pronunciation
synonyms and antonyms
example sentences
part of speech

Example Response

Illustrative shape only — we were not able to call this endpoint (it requires credentials or exposes no public sample URL), so the fields below show the kind of data this API returns rather than a recorded response.

JSON Response · Illustrative
{
  "status": "success",
  "data": {
    "result": "Data from DomainDb Info",
    "description": "Domain name search to find all domains containing particular words/phrases/etc",
    "timestamp": "2025-01-15T10:00:00Z"
  }
}

Field Reference

domains List of registered domain objects matching your search query.
domains[].domain The full registered domain name including TLD, e.g., "openai.com".
domains[].create_date Date when the domain was first registered, in ISO 8601 format.
domains[].update_date Most recent WHOIS update date for the domain record.
total Total number of domains matching the search across all pages.
time Server-side query execution time, useful for performance monitoring.

Implementation Example

Calls a real endpoint of this API. Replace any placeholder credentials with your own key.

Request
const url = "https://api.domainsdb.info/v1/domains/search?domain=openai&zone=com";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

Generated guidance based on this API's documentation, not observed by us. Treat it as a starting point and check against the provider's own error reference.

Empty domains array for a common word The search must match the exact substring in the second-level domain label without the TLD
Use lowercase and try shorter search terms; the API searches within the domain name only, not the TLD.
429 Too Many Requests The free tier enforces rate limits on search queries
Add delays between requests or cache results locally — domain registration data does not change minute-by-minute.
Large response causing timeout Common words like app or shop match millions of domains, causing slow or incomplete responses
Add a zone parameter (e.g., zone=com) and use more specific search terms to narrow results.

Metadata Score Breakdown

Estimated from metadata — endpoint not independently tested

This score is estimated from observable metadata — HTTPS support, authentication model, declared CORS, and documentation reachability — because the API requires authentication or exposes no publicly testable endpoint. The five-signal breakdown is only shown for live-tested APIs.

Metadata estimate · endpoint not independently tested

Technical Specifications

Auth No Auth
HTTPS REQUIRED
CORS UNKNOWN
Category Development
Difficulty Beginner
Listing details not endpoint-verified

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