A-Kyung Motion, Inc. — 1 prefix (MA-L)

A MAC address starting with 00:05:C1 belongs to A-Kyung Motion, Inc., a South Korean industrial-automation manufacturer, and is typically seen on motion controllers and device-network (fieldbus) modules rather than consumer electronics.

IEEE's public MA-L registry lists exactly one block for this organization — 00:05:C1, registered to the address 54-10, Munjung-Dong, Seoul, KR. No second MA-L block, and no MA-M or MA-S sub-assignment, was found under this organization's name, so every MAC beginning 00:05:C1 traces to the same single vendor.

Company substance beyond the bare registration comes from a directly-fetched EtherCAT Technology Group member page, which lists the company as a member and (per that page) dates its founding to 1983. EtherCAT is an industrial fieldbus interoperability standards body, consistent with a device-network hardware maker rather than a shell registrant.

Device-type corroboration comes from two distinct eBay secondary-market listings for named "Accord Series" motion-controller models — AMC-F11B and AMC-N42F — described as made in Korea, matching the motion-control product line implied by the EtherCAT membership. These listing pages were not fully re-fetched, so the model detail is reported at Likely confidence.

Several secondary sources could not be verified directly: the vendor's own site (akyung.co.kr) returned a connection failure on every route tried, and two listing/directory sites (myallday.com, importyeti.com) returned HTTP 403 on direct fetch, leaving only WebSearch result-title evidence for the Korean corporate name and a general web presence. No CVE, CISA KEV entry, or vendor security advisory was found for this company or its products as of an August 2026 search.

Vendor

A-Kyung Motion, Inc. (registered Seoul, KR) — the IEEE MA-L registry 0005C1

Also seen on

eBay-listed "Accord Series" controllers AMC-F11B and AMC-N42F — https://www.ebay.com/itm/365186009198, https://www.ebay.com/itm/166759467710

OUI holdings

Single MA-L block (00:05:C1); no MA-M/MA-S sub-assignment found — the IEEE MA-L registry 0005C1

IEEE assignment

00:05:C1 → A-Kyung Motion, Inc., registered 54-10, Munjung-Dong, Seoul, KR [Confirmed] — the IEEE MA-L registry 0005C1

Registry / block size

MA-L (24-bit OUI); single block, no MA-M/MA-S sub-assignments found under this org [Confirmed] — the IEEE MA-L registry 0005C1

HQ / country

54-10, Munjung-Dong, Seoul, KR (registry address; postal code not published) [Confirmed] — the IEEE MA-L registry 0005C1

Company status

identifiable, operating Korean industrial-automation manufacturer; EtherCAT Technology Group member [Likely] — https://www.ethercat.org/en/members/members_B3FFF26ABF2B474F9811DDB6FDE5F5DD.htm

Device types

motion controllers, motor drivers, device-network (fieldbus) modules, robot systems, PLC integration/programming [Likely] — https://www.ethercat.org/en/members/members_B3FFF26ABF2B474F9811DDB6FDE5F5DD.htm

Notable products

"Accord Series" motion controllers (e.g. AMC-F11B, AMC-N42F) [Likely] — https://www.ebay.com/itm/365186009198, https://www.ebay.com/itm/166759467710

Founded

1983 [Likely] — https://www.ethercat.org/en/members/members_B3FFF26ABF2B474F9811DDB6FDE5F5DD.htm

Verified sample prefix

00:05:C1 (only known assignment to this organization) [Confirmed] — the IEEE MA-L registry 0005C1

Security context

no CVE, CISA KEV entry, or vendor security advisory found as of an August 2026 search [Likely] — general web search, no positive source to cite

Related vendors

none found; possible Korean corporate identity 아경산업(주) / "Akyung Industry Co., Ltd." per WebSearch result-title snippets only — vendor's own site could not be reached directly [Unknown] — https://www.myallday.com/details-KRENyLH57Tmh/A-KYUNG-MOTION-INC/ (title only; direct fetch returned HTTP 403)

Analyst note

00:05:C1 is the only IEEE OUI block registered to A-Kyung Motion, Inc., so a MAC beginning with this prefix points to a single, identifiable vendor rather than a shared or shell registration; the company's real-world footprint rests on EtherCAT standards-body membership and independently found product listings, not on multiple OUI holdings.

[Likely] — https://www.ethercat.org/en/members/members_B3FFF26ABF2B474F9811DDB6FDE5F5DD.htm