Overview
macaddress.io resolves any MAC address or OUI (Organizationally Unique Identifier) prefix to the hardware vendor that manufactured the network interface. The API returns the company name, address, block type, and additional metadata useful for network monitoring and asset inventory tools. A free tier is available with a limited number of daily lookups after registering for an API key.
Beginner Tip
Register at https://macaddress.io to receive a free API key. Pass the key via the X-API-Key header and the MAC address as the search query parameter. The MAC can be in any common format (colon-separated, hyphen-separated, or no delimiter). Start with a small test: look up "FC:FB:FB:01:FA:21" and you should get back a well-known vendor like Apple.
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.
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.
{
"status": "success",
"data": {
"result": "Data from MAC address vendor lookup",
"description": "Retrieve vendor details and other information regarding a given MAC address or an OUI",
"timestamp": "2025-01-15T10:00:00Z"
}
} Field Reference
vendorDetails.companyName Name of the company that owns this OUI block, e.g. "Apple, Inc.". vendorDetails.companyAddress Registered address of the vendor. vendorDetails.countryCode ISO 3166-1 alpha-2 country code of the vendor headquarters. blockDetails.blockFound Whether a matching OUI block was found in the IEEE database. blockDetails.blockSize Number of MAC addresses in the assigned block (e.g. 16777216 for a /8 block). macAddressDetails.isValid Indicates whether the provided MAC address is valid. Implementation Example
Calls a real endpoint of this API. Replace any placeholder credentials with your own key.
const url = "https://api.macaddress.io/v1?apiKey=YOUR_KEY&output=json&search=FC:FB:FB:01:FA:21";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
headers: {
"X-API-Key": "YOUR_API_KEY"
}
});
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.
Metadata Score Breakdown
Estimated from metadata — endpoint not independently tested
Metadata estimate · endpoint not independently tested
Technical Specifications
Related Tags
Similar APIs
View All →ApiFlash
ApiFlash provides a REST API that captures full-page or viewport screenshots of any public URL using a headless Chrome browser, returning the image as a PNG, JPEG, or WebP file.
Azure DevOps
Azure DevOps REST API provides programmatic access to all Azure DevOps services including work items, repositories, pipelines, test plans, and artifact feeds.
Base
Base provides programmatic access to building quick backends via REST API.
Blitapp
Blitapp is a screenshot-as-a-service API that lets you capture full-page or viewport screenshots of any web page on a schedule, then automatically sync them to cloud storage like Dropbox or Google Drive.
DomainDb Info
⭐ Beginner's PickDomainsDB.info provides a searchable database of registered domain names, allowing you to find all domains containing specific keywords, phrases, or patterns across various TLDs.