MAC address 50:99:03 (Meta Platforms, Inc.)

MAC address prefix 50:99:03 is registered to Meta Platforms, Inc., located at 1601 Willow Road, Menlo Park CA 94025, US. This registration is classified as MA-L (MAC Address Block Large) containing 16,777,216 MAC addresses (2^24). The prefix was registered on 27 June 2025, and no subsequent updates have been recorded.

Vendor & Registry Dossier

Public Allocation
Assigned Prefix
50:99:03
Registrant / Organization
Meta Platforms, Inc.
Registry Chronology
Initial registration: 27 June 2025
Assignment Classification
MA-L

(MAC Address Block Large) containing 16,777,216 MAC addresses (2^24)

Registered Location

MAC Address Vendor Country United States (US) map
Country: United States (US)
Headquarters Registered Facility 🇺🇸 US
1601 Willow Road
Menlo Park CA 94025
US.

REST API v2

200 OK
CLI curl -s https://api.maclookup.app/v2/macs/509903 -H 'Accept: application/json'
{
  "success": true,
  "found": true,
  "macPrefix": "509903",
  "company": "Meta Platforms, Inc.",
  "address": "1601 Willow Road, Menlo Park CA 94025, US",
  "country": "US",
  "blockStart": "509903000000",
  "blockEnd": "509903FFFFFF",
  "blockSize": 16777215,
  "blockType": "MA-L",
  "updated": "2025-06-27",
  "isRand": false,
  "isPrivate": false
}