Microtek International, Inc. — 2 prefixes (MA-L)

A MAC address beginning 00:80:90 or 00:D0:B9 belongs to Microtek International, Inc., a Taiwan-based digital-imaging manufacturer best known for desktop scanners. It is most likely to appear on scanner controller boards, embedded network interfaces, or other peripheral hardware the company shipped, rather than on a general-purpose computer or phone.

Microtek International was founded October 23, 1980 by Bobo Wang and entered the scanning business in 1983, shipping the first halftone optical film scanner in 1984, the first desktop halftone scanner in 1986, and the first color scanner in 1989. It went public in 1988 and opened a US subsidiary (Microtek Lab, Inc.) around 1985. The company holds 450+ patents and still operates today under the ScanMaker and ArtixScan product lines at microtek.com.

Two separate full /24 OUI blocks are registered to the identical name "Microtek International, Inc." — one with a US registrant address (Hillsboro, OR) and one with a Taiwan registrant address (Hsinchu Science Park). Holding two independent OUI assignments under one name, plus a well-documented multi-decade corporate history, is why this entry is treated as a substantive vendor rather than a bare single-OUI shell registration.

No specific product, teardown, or packet capture was found tying a MAC inside either block to a named Microtek device, so the device-class mapping is an inference from the company's business rather than a confirmed sighting. No security advisories or CVEs were found for Microtek network hardware or for either prefix. A same-named but apparently unrelated "Microtek International Private Limited" (New Delhi, India — UPS/inverters/solar) also surfaced in research; nothing ties it to either OUI registration.