UNITEC Co., Ltd. — 2 prefixes (MA-L, Japan)

Two IEEE MA-L blocks collapse into the vendor-unitec slug under this site's name-normalization (both names reduce to the key "unitec" once "Co./Ltd." suffixes are stripped): 00:E0:5D, registered to "UNITEC CO., LTD." at Kisogawa-cho Ichinotori 24, Haguri-gun, Aichi, JP; and 98:DC:D9, registered to "UNITEC Co., Ltd." at 1-2-1 Shinyokohama, Yokohama-shi, Kanagawa, JP 222-0033. Both registrants are now independently corroborated as real, currently-active, but legally distinct Japanese corporations — "UNITEC" is a common company name in Japan, and re-research confirms these are two coincidentally same-named firms, not one relocated entity. The Aichi registrant (00:E0:5D) matches a Japanese national corporate-number (hōjin-bangō) registry entry for 株式会社ユニテック at 24 Ichinotori, Kisogawa-cho, Ichinomiya, Aichi 493-0006, and a D&B/business-directory profile for "UNITEC CORP" at the same street. The Yokohama registrant (98:DC:D9) is now independently pinned to a specific, active corporation: 株式会社ユニテック (English trade name "UNITEC Co., Ltd.", web domain unitec-ccs.co.jp), Japanese corporate number 8020001059308, registered at exactly 1-2-1 Shin-Yokohama, Kohoku-ku, Yokohama-shi, Kanagawa 222-0033 (Shin-Yokohama First Building, 2F) — the identical street address cited in the IEEE OUI record. This UNITEC was established January 2000, has approximately 65 employees, and its public business description (embedded-device design and manufacturing, IoT sensor/filter systems, touch-panel products, AMR/AGV integration support) gives it genuine, verifiable company substance and plausible device-type context for a MAC-address-bearing product line, though no specific product model or datasheet exposing this exact OUI was located. The two registrants remain legally distinct corporations (different hōjin-bangō, different prefectures, no evidence of common ownership or a rename/relocation), so this is now two independently substantiated same-named companies, not one company with two blocks, and not a bare thin shell. IEEE publishes no assignment date for either block; the only administrative date found for the Aichi entity, 2015-10-05, is a Japanese corporate-number assignment date from the National Tax Agency's registry (a legal/administrative event), NOT an OUI or MAC registration date, and must not be conflated with one. No corporate-number assignment date was located for the Yokohama entity (8020001059308); its establishment date (January 2000) comes from the company's own business-directory listings, not from IEEE or the corporate-number registry.

IEEE assignment (block 1)

00:E0:5D → "UNITEC CO., LTD.", Kisogawa-cho Ichinotori 24, Haguri-gun, Aichi, JP [Confirmed] — the IEEE MA-L registry, line 29788 (IEEE MA-L)

IEEE assignment (block 2)

98:DC:D9 → "UNITEC Co., Ltd.", 1-2-1 Shinyokohama, Yokohama-shi, Kanagawa, JP 222-0033 [Confirmed] — the IEEE MA-L registry, line 12200 (IEEE MA-L)

Registry / block size

both MA-L (24-bit OUI) [Confirmed] — IEEE MA-L. No matching MA-M or MA-S ("UNITEC" exact) exists in the IEEE MA-M registry / the IEEE MA-S registry [Confirmed] — the IEEE MA-M registry, the IEEE MA-S registry

Country

Japan (both blocks) [Confirmed] — IEEE MA-L

Corporate existence (Aichi / 00

E0:5D): real, currently-registered Japanese corporation — 株式会社ユニテック / Unitec Co., Ltd., normalized address 24 Ichinotori, Kisogawa-cho, Ichinomiya, Aichi 493-0006, hōjin-bangō assigned 2015-10-05 [Likely] — houjin.j-bdb.com/81800010846372762, info.gbiz.go.jp/hojin/ichiran?hojinBango=8180001084637, info-clipper.com (UNITEC CORP, Japan), dnb.com business directory

Corporate existence (Yokohama / 98

DC:D9): real, currently-active Japanese corporation independently pinned to the exact registered street address — 株式会社ユニテック, trade name "UNITEC Co., Ltd.", web domain unitec-ccs.co.jp, corporate number (hōjin-bangō) 8020001059308, registered at 1-2-1 Shin-Yokohama, Kohoku-ku, Yokohama-shi, Kanagawa 222-0033 (Shin-Yokohama First Building 2F) — matches the IEEE OUI address exactly [Likely] — https://info.gbiz.go.jp/hojin/ichiran?hojinBango=8020001059308, https://www.unitec-ccs.co.jp/ (site returns a malformed HTTP header to automated fetchers; content read via cached search snippets and aggregator pages), https://houjin.jp/c/8020001059308

Same-entity question

RESOLVED (re-research) — 00:E0:5D (Aichi, hōjin-bangō 8180001084637) and 98:DC:D9 (Yokohama, hōjin-bangō 8020001059308) are two distinct, separately-registered Japanese corporations, not one legal entity under a relocation or rename. Both independently real and active; not affiliated in any found source

[Likely] — info.gbiz.go.jp (both corporate-number records), houjin.jp

Device types / products (Yokohama / 98

DC:D9 entity): embedded-device design and manufacturing, IoT sensor/filter algorithm systems, touch-panel products, AMR/AGV (autonomous mobile robot) integration support; ~65 employees, established January 2000; 25 patents on record, predominantly JPO class G06 ("Calculation or Counting" — computing/digital electronics, 22 of 25) with G08 (Signaling, 1) and G09 (Display/Cryptography, 2) — consistent with an embedded-electronics manufacturer, though no specific product model or datasheet exposing this exact OUI (98:DC:D9) was located [Likely] — https://www.unitec-ccs.co.jp/ (company profile via search snippets), https://info.gbiz.go.jp/hojin/patent?hojinBango=8020001059308

Device types / products (Aichi / 00

E0:5D entity): none verified beyond the bare corporate registration; no company website, product line, or device category found [Unknown] — no source (aggregator "device count" figures on cleancss.com are synthetic estimates, not treated as data)

Industry (Yokohama entity)

embedded systems / IoT / industrial electronics (design and manufacture) [Likely] — unitec-ccs.co.jp company profile via search

Industry (Aichi entity)

Unknown [Unknown] — no source

Company status

both active/registered [Likely] — info.gbiz.go.jp corporate-number registry (both records)

Registration dates

IEEE publishes NO assignment/registration date for either OUI (the IEEE MA-L registry has only Registry, Assignment, Organization Name, Organization Address). Any "date registered" on third-party MAC-lookup tools is a database artifact, not an IEEE fact. The 2015-10-05 date is the Aichi entity's Japanese hōjin-bangō assignment date, a distinct legal event, NOT an OUI date. No comparable corporate-number date was located for the Yokohama entity; its January 2000 establishment date is a company-reported fact from directory listings, also not an OUI date

[Confirmed] — the IEEE MA-L registry (no date column); houjin.j-bdb.com; unitec-ccs.co.jp via search snippets

Analyst note

Re-research resolves the prior same-entity ambiguity: these are two distinct, independently-active Japanese corporations sharing a common name, each occupying one of the two OUI blocks. The Yokohama entity now has verifiable device/industry substance (embedded/IoT electronics manufacturer); the Aichi entity's product line remains unverified. Copy should attribute device-type substance only to the Yokohama block and keep the Aichi block hedged.