MAC Lookup

What It Does

Parses the OUI of a MAC address and resolves it against all four IEEE registries via longest-prefix match — MA-L (24-bit), MA-M (28-bit), MA-S (36-bit), or CID — to identify the manufacturer. Analyzes the U/L and I/G bits to classify the address type. Detects virtual-machine MACs (VMware, VirtualBox, Hyper-V, QEMU/KVM, Xen, Parallels), identifies randomized MACs from mobile devices (iOS 14+, Android 10+), and uses an `is_cid` flag to suppress false-positive randomization classification on legitimate CID-registered hardware. Classifies addresses as UAA (Universally Administered) or LAA (Locally Administered). Accepts colon, hyphen, no-separator, and Cisco dot formats.

Why It's Useful

MAC vendor identification is the first step in network device profiling for asset management, NAC (Network Access Control), and security monitoring. The VM and randomized MAC detection is critical for modern networks where mobile devices use per-network random MACs and cloud workloads run on virtual NICs — both of which break traditional MAC-based identification.

Use Cases

Parameters

Response Fields

Code Examples

curl "https://api.edgedns.dev/v1/network/mac" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d "mac=00:50:56:C0:00:08"

const response = await fetch(
  'https://api.edgedns.dev/v1/network/mac?mac=00%3A50%3A56%3AC0%3A00%3A08',
  {
    headers: {
      'Authorization': 'Bearer YOUR_API_KEY'
    }
  }
);

const data = await response.json();
console.log(data);

import requests

response = requests.get(
    'https://api.edgedns.dev/v1/network/mac',
    headers={'Authorization': 'Bearer YOUR_API_KEY'},
    params={
    'mac': '00:50:56:C0:00:08'
    }
)

data = response.json()
print(data)

Related Endpoints

External References

Learn more about the standards and protocols behind this endpoint.