Network Computing Devices — 2 prefixes (MA-L)

A MAC address starting with 00:00:A7 or 00:90:FC belongs to Network Computing Devices (NCD), a Mountain View, California company that made X terminals and, later, thin-client "network computer" hardware from the late 1980s through the early 2000s.

NCD registered both blocks under slightly different name forms — "NETWORK COMPUTING DEVICES INC." for 00:00:A7 and "NETWORK COMPUTING DEVICES" for 00:90:FC — at two Mountain View addresses (350 North Bernardo and 301 Ravendale Drive), per the IEEE MA-L registry. Two independent assignments to one company name is a stronger company-substance signal than a single-OUI registration, and it matches a real, historically documented hardware vendor rather than a registration shell.

NCD's flagship line was the X terminal, a thin desktop device that ran the X Window System against a remote host instead of a full local OS, starting with the NCD-19 in 1989. The company went public on Nasdaq (ticker NCDI) in 1992 and grew through acquisitions, including Tektronix's TekXPress X-terminal line and Network Displays business unit in 1998.

NCD later pivoted toward Internet-appliance and thin-client computing with its Thinfrastructure software and NC900 Business Network Computer, and sold its ThinSTAR thin-client line to Neoware Systems in March 2002. NCD relocated to Beaverton, Oregon, and ceased operations in 2004; former employees went on to found ThinPATH Systems to support the installed base.

No currently operating official NCD corporate site could be confirmed. The historical ncd.com domain and a legacy ncd-x.com page carrying old company-profile content were the closest available traces, and one page on that domain returned a server error during this check. No CVE or security advisory naming NCD hardware or firmware was found as of an August 2026 search.

Company

Network Computing Devices, Inc. (NCD), Mountain View, CA

OUI prefixes

00:00:A7 (MA-L, "NETWORK COMPUTING DEVICES INC.") and 00:90:FC (MA-L, "NETWORK COMPUTING DEVICES")

Registered addresses

350 North Bernardo, Mountain View, CA 94043 (00:00:A7); 301 Ravendale Drive, Mountain View, CA 94043 (00:90:FC)

Notable products

NCD-19 X terminal, NC900 Business Network Computer, Thinfrastructure, ThinSTAR

Company status

ceased operations in 2004; no live corporate site confirmed

Also seen on

Tektronix TekXPress-branded X terminals after NCD's 1998 acquisition of that product line (en.wikipedia.org/wiki/Network_Computing_Devices)

IEEE assignment

00:00:A7 → NETWORK COMPUTING DEVICES INC., Mountain View, CA [Confirmed] — the IEEE MA-L registry 0000A7

IEEE assignment

00:90:FC → NETWORK COMPUTING DEVICES, Mountain View, CA [Confirmed] — the IEEE MA-L registry 0090FC

Registry / block size

MA-L (24-bit OUI) x2; no MA-M or MA-S assignments found under this company name [Confirmed] — the IEEE MA-L registry

HQ / country

Mountain View, CA, US (registry addresses); company later relocated to Beaverton, OR before ceasing operations [Likely] — https://en.wikipedia.org/wiki/Network_Computing_Devices

Company status

inactive; ceased operations in 2004 [Likely] — https://en.wikipedia.org/wiki/Network_Computing_Devices, https://www.ithistory.org/db/companies/network-computing-devices

Device types

X terminal, thin client, network computer [Likely] — https://en.wikipedia.org/wiki/Network_Computing_Devices, https://www.computinghistory.org.uk/sec/1064/Network-Computing-Devices/

Notable products

NCD-19 (1989), NC900 Business Network Computer, Thinfrastructure software, ThinSTAR (sold to Neoware Systems, March 2002) [Likely] — https://en.wikipedia.org/wiki/Network_Computing_Devices

Corporate history

founded 1987 (one source states 1988); IPO'd on Nasdaq as NCDI in 1992; acquired Tektronix's TekXPress X-terminal line and Network Displays business unit in 1998 [Likely, minor source discrepancy on founding year] — https://en.wikipedia.org/wiki/Network_Computing_Devices, https://www.ithistory.org/db/companies/network-computing-devices

Website

no currently operating official site confirmed; historical domain ncd.com, legacy content found at ncd-x.com (one page returned an HTTP 500 during this check) [Unknown] — https://www.ncd-x.com/about/overview/

OUI registration dates

Unknown — IEEE's public the IEEE MA-L registry publishes no assignment/registration date for either prefix [Confirmed absence] — the IEEE MA-L registry

Security history

no CVE recorded in the NVD as of an August 2026 search [Unknown]

Related vendors

Tektronix (TekXPress/Network Displays business unit acquired by NCD in 1998); Neoware Systems (acquired NCD's ThinSTAR thin-client line, March 2002); ThinPATH Systems (founded by former NCD employees to support the installed base) [Likely] — https://en.wikipedia.org/wiki/Network_Computing_Devices

Analyst note

the OUI identifies legacy X-terminal/thin-client hardware from a vendor that ceased operations in 2004; a live sighting today more likely reflects old surviving hardware or a locally administered/spoofed address than active vendor-supported equipment [Likely]