MAC address 04:AC:44 (Holtek Semiconductor Inc.)

MAC address prefix 04:AC:44 is registered to Holtek Semiconductor Inc., located at No.3, Creation Rd. II, Science Park, Hsinchu 300, TW. This registration is classified as MA-L (MAC Address Block Large) containing 16,777,216 MAC addresses (2^24). The prefix was registered on 31 October 2017, and no subsequent updates have been recorded.

Vendor & Registry Dossier

Public Allocation
Assigned Prefix
04:AC:44
Registrant / Organization
Holtek Semiconductor Inc.
Registry Chronology
Initial registration: 31 October 2017
Assignment Classification
MA-L

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

Registered Location

MAC Address Vendor Country Taiwan (TW) map
Country: Taiwan (TW)
Headquarters Registered Facility 🇹🇼 TW
No.3
Creation Rd. II
Science Park
Hsinchu 300
TW.

REST API v2

200 OK
CLI curl -s https://api.maclookup.app/v2/macs/04ac44 -H 'Accept: application/json'
{
  "success": true,
  "found": true,
  "macPrefix": "04AC44",
  "company": "Holtek Semiconductor Inc.",
  "address": "No.3, Creation Rd. II, Science Park, Hsinchu  300, TW",
  "country": "TW",
  "blockStart": "04AC44000000",
  "blockEnd": "04AC44FFFFFF",
  "blockSize": 16777215,
  "blockType": "MA-L",
  "updated": "2017-10-31",
  "isRand": false,
  "isPrivate": false
}