Arcelik A.S — 2 prefixes (MA-L)

A MAC address beginning with 00:11:E1 or 64:E8:15 belongs to Arcelik A.S (Arçelik A.Ş.), a Turkish multinational home-appliance manufacturer, and typically appears on network-connected kitchen and laundry appliances rather than computers, phones, or networking gear.

Arcelik is a large, independently documented company, not a shell registration. Founded in 1955 and majority-controlled by Koç Holding, Turkey's largest industrial conglomerate, it is headquartered in Istanbul with roughly 55,000 employees and 15 manufacturing plants across Turkey, Romania, Russia, China, South Africa, and Thailand. It sells in more than 100 countries and reported about $13.28B in 2024 revenue, under a brand portfolio that includes Beko, Grundig, Dawlance, Defy, Arctic, Blomberg, Elektrabregenz, Leisure, Flavel, and Altus.

Both prefixes are dedicated 24-bit MA-L blocks registered directly to Arcelik at the same Istanbul address, confirming they belong to one registrant rather than two similarly-named companies. Neither is a sub-allocation of a shared IEEE base such as 70:B3:D5, and no MA-M or MA-S sub-block was found for Arcelik in the registry cache, so both prefixes may be attributed to Arcelik without further qualification.

Arcelik-group appliances connect via the HomeWhiz smart-home platform, which controls washing machines, tumble dryers, washer/dryer combos, dishwashers, air conditioners, extraction fans, induction hobs, refrigerators, freezers, and ovens across the Beko, Grundig, Bauknecht, and Arcelik brands over WiFi, cloud, or Bluetooth. This is plausible corroboration for why the registrant holds Ethernet/WiFi MAC blocks, though it does not confirm either specific prefix was observed on a named device model.

On security, Beko/Arcelik runs a formal vulnerability-disclosure programme covering IoT products and cloud services, and Arcelik's own site credits the company as the IoT Security Foundation's inaugural "IoT Security Champion" (November 2018).

Separately, a ransomware group calling itself "The Gentlemen" listed Arcelik on its leak site around 6 May 2026, alleging compromise of general corporate systems. As of an August 2026 search, this claim is unconfirmed by Arcelik or mainstream press, and it concerns unrelated corporate IT rather than the appliance product line these OUIs serve.

Do not confuse this registrant with BEKO Technologies GmbH (Neuss, Germany; OUI 6C:93:92), an unrelated manufacturer of compressed-air and gas-treatment equipment. Despite the overlap with Arcelik's own "Beko" consumer-appliance brand, it is a separate company at a separate address with no found connection to Arcelik, and its OUI must never be attributed to Arcelik.

IEEE assignment

2 prefixes → Arcelik A.S, registered Istanbul, TR [Confirmed] — the IEEE MA-L registry 0011E1, the IEEE MA-L registry 64E815

Registry / block size

MA-L (24-bit OUI); holds 2 IEEE prefixes (33,554,432 addresses total) [Confirmed] — the IEEE MA-L registry. NOTE: IEEE's public OUI data publishes NO assignment/registration date (the IEEE MA-L registry columns are only Registry, Assignment, Organization Name, Organization Address); no third-party MAC-lookup aggregator was consulted for this entry, so no database-artifact date exists to null out either.

HQ / country

Cumhuriyet Mah., E5 Yan Yol, No:1, Istanbul, TR 34520 (registry address) [Confirmed] — the IEEE MA-L registry 0011E1, the IEEE MA-L registry 64E815

Company status

active [Confirmed] — arcelikglobal.com, en.wikipedia.org

Device types

washing machines, tumble dryers, washer/dryer combos, dishwashers, air conditioners, extraction fans, induction hobs, refrigerators/freezers, ovens [Confirmed] — homewhiz.com

Notable products

HomeWhiz-connected smart appliances across the Beko, Grundig, Bauknecht, and Arcelik brands [Confirmed] — homewhiz.com, github.com (home-assistant-HomeWhiz integration)

Verified sample prefixes (both MA-L, Arcelik A.S)

00:11:E1, 64:E8:15 [Confirmed] — the IEEE MA-L registry 0011E1, the IEEE MA-L registry 64E815

Shared IEEE base / sub-block check

not applicable — both prefixes are dedicated /24 MA-L blocks assigned directly to Arcelik, not sub-allocations beneath a shared IEEE-administered base (e.g. 70:B3:D5); no MA-M or MA-S sub-block was found for Arcelik in either sub-allocation registry [Confirmed] — the IEEE MA-L registry 0011E1, the IEEE MA-L registry 64E815, the IEEE MA-M registry (searched, no match), the IEEE MA-S registry (searched, no match)

Security posture

Beko/Arcelik runs a coordinated vulnerability-disclosure procedure naming IoT products and cloud services in scope (psirt@homewhiz.com); Arcelik's own site credits the company as the IoT Security Foundation's inaugural "IoT Security Champion" (November 2018)

[Confirmed] — bekoplc.com, arcelikglobal.com

Unconfirmed claim

a ransomware group calling itself "The Gentlemen" listed Arcelik on its leak site around 6 May 2026, alleging compromise of general corporate systems; as of an August 2026 search this is unconfirmed by Arcelik or mainstream press and concerns unrelated corporate IT, not the appliance product line these OUIs serve

[Unknown] — dexpose.io

Special note

do not confuse with BEKO Technologies GmbH (Neuss, Germany), OUI 6C:93:92 (MA-L) — an unrelated manufacturer of compressed-air/gas-treatment equipment despite the "Beko" brand-name overlap with Arcelik's own consumer-appliance line [Confirmed] — the IEEE MA-L registry 6C9392

Related vendors

Beko, Grundig, Dawlance, Defy, Arctic, Blomberg, Elektrabregenz, Leisure, Flavel, Altus (Arcelik-group brands) [Confirmed] — en.wikipedia.org

Analyst note

both 00:11:E1 and 64:E8:15 are Arcelik's own dedicated blocks, not shared-base sub-allocations, so either may be cited as identifying genuine Arcelik/HomeWhiz appliance hardware directly [Confirmed] — the IEEE MA-L registry 0011E1, the IEEE MA-L registry 64E815