MAC address 04:EF:61 (Dell Inc.)

MAC address prefix 04:EF:61 is registered to Dell Inc., located at One Dell Way, Round Rock TX 78682, 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 21 September 2026, and no subsequent updates have been recorded.

Vendor & Registry Dossier

Public Allocation
Assigned Prefix
04:EF:61
Registrant / Organization
Dell Inc.
Registry Chronology
Initial registration: 21 September 2026
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
One Dell Way
Round Rock TX 78682
US.

REST API v2

200 OK
CLI curl -s https://api.maclookup.app/v2/macs/04ef61 -H 'Accept: application/json'
{
  "success": true,
  "found": true,
  "macPrefix": "04EF61",
  "company": "Dell Inc.",
  "address": "One Dell Way, Round Rock  TX 78682, US",
  "country": "US",
  "blockStart": "04EF61000000",
  "blockEnd": "04EF61FFFFFF",
  "blockSize": 16777215,
  "blockType": "MA-L",
  "updated": "2026-09-21",
  "isRand": false,
  "isPrivate": false
}