D-Link Systems, Inc. — 2 prefixes (MA-L)

A MAC address beginning 00:05:5D or 00:80:C8 belongs to D-Link Systems, Inc., typically seen on D-Link-branded consumer and small-business networking gear — routers, switches, network-attached storage, IP cameras, and wireless access points sold in the US market.

D-Link Systems, Inc. is the California-incorporated US subsidiary of D-Link Corporation (Taiwan, founded 1986), a major networking hardware maker. It is one of at least five separate D-Link OUI registrants — alongside D-Link Corporation, D-Link International (Singapore), D-Link Middle East FZCO, and D-Link (Shanghai) — each holding its own IEEE-assigned blocks, so this entry's two prefixes should not be conflated with the wider D-Link family's combined footprint.

Both prefixes register to the same address, 53 Discover Dr., Irvine, CA 92618, US — D-Link Systems' documented pre-2003 headquarters, before a move to Fountain Valley and a later return to Irvine in 2021. IEEE's public OUI data carries no assignment date for either block; third-party mirrors report 2000-11-09 (00:80:C8) and 2001-06-04 (00:05:5D), but those are database artifacts, not IEEE facts.

Corroboration for the company's substance comes from D-Link's own press materials on the office moves, Dun & Bradstreet and ProcessRegister business-directory listings, and a federal court filing captioned D-Link Corporation. No source in this pass pinned either prefix to a specific device model, and no security advisory ties directly to these two OUIs.

IEEE assignment

00:05:5D and 00:80:C8 → D-LINK SYSTEMS, INC., registered 53 Discover Dr., Irvine, CA 92618, US [Confirmed] — the IEEE MA-L registry (lines 21563, 30211)

Registry / block size

MA-L (24-bit OUI); two blocks held [Confirmed] — the IEEE MA-L registry

HQ / country

53 Discover Dr., Irvine, CA 92618, US (registry address; matches documented pre-2003 HQ, later Fountain Valley 2003, back to Irvine 2021) [Likely] — shop.us.dlink.com, prnewswire.com

Company status

active US subsidiary of D-Link Corporation (Taiwan, founded 1986) [Likely] — dnb.com, processregister.com

Device types

routers, switches, NAS, IP cameras, wireless access points [Likely] — maclookup.app vendor listing; general D-Link product-line corroboration (no per-prefix model confirmed)

Notable products

Unknown — no source in this pass tied a specific device model to either prefix [Unknown]

Verified sample prefixes

00:05:5D, 00:80:C8 (both MA-L, D-LINK SYSTEMS, INC.) [Confirmed] — the IEEE MA-L registry; maclookup.app

Registration date

not published by IEEE; third-party mirrors report 2000-11-09 (00:80:C8) and 2001-06-04 (00:05:5D) — database artifacts, not IEEE facts [Unknown as IEEE fact] — maclookup.app

Related vendors

D-Link Corporation (Taiwan parent, ~27 MA-L prefixes), D-Link International (Singapore, ~60 MA-L prefixes), D-Link Middle East FZCO (1 prefix), D-Link (Shanghai) Limited Corp. (1 prefix) [Likely] — https://maclookup.app/vendors/list/d

Analyst note

Two OUI blocks plus documented corporate identity (address history, D&B/ProcessRegister listings, a federal court caption) place this above a bare single-OUI shell registration; still, no source in this pass pinned a specific device model to either prefix, and no security advisory ties directly to these OUIs. [Likely]