MAC address 00:12:0F (IEEE 802.3 Working Group)

MAC address prefix 00:12:0F is registered to IEEE 802.3 Working Group, located at IEEE 802.3 Chair, c/o RAC Administrator, IEEE, Piscataway NJ 08854, US. This registration is classified as MA-L (MAC Address Block Large) containing 16,777,216 MAC addresses (2^24). The prefix was initially registered on 12 August 2004, with the most recent update made on 20 September 2026.

Vendor & Registry Dossier

Public Allocation
Assigned Prefix
00:12:0F
Registrant / Organization
IEEE 802.3 Working Group
Registry Chronology
Initial registration: 12 August 2004
Last updated: 20 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
IEEE 802.3 Chair
c/o RAC Administrator
IEEE
Piscataway NJ 08854
US.

REST API v2

200 OK
CLI curl -s https://api.maclookup.app/v2/macs/00120f -H 'Accept: application/json'
{
  "success": true,
  "found": true,
  "macPrefix": "00120F",
  "company": "IEEE 802.3 Working Group",
  "address": "IEEE 802.3 Chair, c/o RAC Administrator, IEEE, Piscataway NJ 08854, US",
  "country": "US",
  "blockStart": "00120F000000",
  "blockEnd": "00120FFFFFFF",
  "blockSize": 16777215,
  "blockType": "MA-L",
  "updated": "2026-09-20",
  "isRand": false,
  "isPrivate": false
}