MAC address F4:49:EF (EMSTONE)

MAC address prefix F4:49:EF is registered to EMSTONE, located at #1201, Byeoksan Digital Valley 3rd, 271, Digital-ro, Guro-Gu Seoul 08381, KR. 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 23 July 2017, with the most recent update made on 15 April 2026.

Vendor & Registry Dossier

Public Allocation

Assigned Prefix

F4:49:EF

Registrant / Organization

EMSTONE

Registry Chronology

Initial registration: 23 July 2017

Last updated: 15 April 2026

Assignment Classification

MA-L

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

Registered Location

Country: South Korea (KR)

Headquarters Registered Facility 🇰🇷 KR

#1201
Byeoksan Digital Valley 3rd
271
Digital-ro
Guro-Gu Seoul 08381
KR.

REST API v2

200 OK

CLI curl -s https://api.maclookup.app/v2/macs/f449ef -H 'Accept: application/json'

{
  "success": true,
  "found": true,
  "macPrefix": "F449EF",
  "company": "EMSTONE",
  "address": "#1201, Byeoksan Digital Valley 3rd, 271, Digital-ro, Guro-Gu Seoul 08381, KR",
  "country": "KR",
  "blockStart": "F449EF000000",
  "blockEnd": "F449EFFFFFFF",
  "blockSize": 16777215,
  "blockType": "MA-L",
  "updated": "2026-04-15",
  "isRand": false,
  "isPrivate": false
}