ADC Corporation — 1 prefix (MA-L)

ADC Corporation is the IEEE-registered name for a Japanese precision test-and-measurement instrument maker headquartered at 77-1, Miyako, Namegawa-machi, Hiki-gun, Saitama Prefecture — the exact address carried on its IEEE registration, which corroborates the OUI-to-company match. The company traces to 1971 as Takeda System Corporation, a subsidiary of Takeda Riken Industry, and separated from Advantest Corporation in 2003 via a management buyout, taking the ADC Corporation name and trading under the brand "ADCMT." Its product line is bench and rack instrumentation rather than network infrastructure: digital multimeters (5½- to 8½-digit, e.g. models 7355, 7461A, 7481/7482), DC voltage/current source-monitor units, digital electrometers, optical power and wavelength meters, scanners, modular multifunction instruments, and PV/solar-cell evaluation systems. Standard LAN and USB remote-control interfaces (GPIB/RS-232 optional) put these instruments on IP networks in test labs and automated test systems, supporting both ADC's own command set and SCPI. A disambiguation is essential for this entry: "ADC" security searches surface a large body of unrelated Citrix NetScaler ADC (Application Delivery Controller) CVEs — a different company and product category entirely, not attributable to this vendor.

IEEE assignment

1 prefix → ADC Corporation, 77-1, Miyako, Namegawa-machi, Hiki-gun, Saitama Pref., JP 355-0812 [Confirmed] — IEEE MA-L

Registry / block size

MA-L (24-bit OUI); exactly one IEEE prefix for this exact org name across the IEEE MA-L registry, the IEEE MA-M registry, and the IEEE MA-S registry [Confirmed] — the IEEE MA-L registry, the IEEE MA-M registry, the IEEE MA-S 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); a "registration date" of March 29, 2017 shown by third-party tool maclookup.app for this block is a database artifact, not an IEEE fact.

Verified prefix

EC:42:B4 (MA-L, ADC Corporation) [Confirmed] — the IEEE MA-L registry / maclookup.app

HQ / country

77-1, Miyako, Namegawa-machi, Hiki-gun, Saitama Pref., JP 355-0812 (registry address; matches the current corporate address published by adcmt.com) [Confirmed] — IEEE MA-L / adcmt.com

Company status

active — operating manufacturer with a live corporate site and current product catalog [Confirmed] — adcmt.com

Also known as

brand "ADCMT"; formerly Takeda System Corporation (founded 1971, a Takeda Riken Industry subsidiary); separated from Advantest Corporation in 2003 via management buyout [Likely] — adcmt.com/en/company (single-source corporate history page; not cross-verified against an independent business-history archive)

Device types

digital multimeters, DC voltage/current source-monitor units, digital electrometers, optical power/wavelength meters, scanners, modular multifunction instruments, PV/solar-cell test systems — LAN + USB standard remote interfaces (GPIB/RS-232 optional), supporting SCPI

[Confirmed] — adcmt.com/en/products, National Instruments driver listings

Notable products

models 7355, 7461A, 7481/7482 digital multimeters [Confirmed] — adcmt.com/en/products/dmm

Security context

no CVEs or known exploits found for ADC Corporation / ADCMT instruments; searches for "ADC" security vulnerabilities are dominated by unrelated Citrix NetScaler ADC (Application Delivery Controller) CVEs, a different company and product category not attributable here

[Confirmed — negative result] — no CVE found for adcmt.com / ADC Corporation Japan

Vendor website

https://www.adcmt.com/en [Confirmed] — adcmt.com

Allocated date

Unknown — IEEE publishes no OUI registration date; not fabricating the third-party "2017-03-29" artifact [Unknown] — IEEE MA-L

Related vendors

distinct, separately-entried ADC-named organizations must not be merged here — ADC Codenoll Technology Corp. (00:00:4A, 00:80:DF, fiber-LAN, already DONE as vendor-adc-codenoll-technology), ADC Telecommunications, ADC Automotive Distance Control Systems GmbH, ADC Global Connectivity Solutions Division, ADC Techonology, ADC-Elektronik GmbH

[Confirmed] — the IEEE MA-L registry, this site's own enrichment records

Analyst note

an EC:42:B4 OUI identifies a genuine ADCMT lab/bench test instrument (multimeter, source-monitor, electrometer, or optical power meter) on a LAN, typically in test-and-measurement or industrial-automation environments, not consumer or carrier network gear.