Emulex Corporation — 6 prefixes (MA-L)

A MAC address beginning with one of six IEEE-registered prefixes (00:00:C9, 00:0A:33, 00:0E:03, 00:10:9B, 00:90:FA, 00:E0:D5) belongs to Emulex Corporation, and typically identifies an enterprise Fibre Channel host bus adapter (HBA) or converged network adapter (CNA) rather than a consumer device.

Emulex registered all six blocks under the identical organization name "Emulex Corporation," with five tied to its Costa Mesa, California headquarters and one (00:0A:33) to a Roseville, California address. IEEE's public OUI registry lists no assignment date for any of them — third-party sites that display "registration dates" for these prefixes are showing database artifacts of their own scraping process, not IEEE facts.

Emulex built its business supplying storage networking hardware to servers and storage arrays — most visibly the LightPulse line of Fibre Channel HBAs, later extended into converged network adapters. Avago Technologies acquired Emulex for roughly $764 million in 2015; Avago subsequently renamed itself Broadcom, and the Emulex name lives on today as a Broadcom storage-adapter product brand, including current-generation 64G Fibre Channel HBAs.

Because this hardware serves enterprise storage-area networks rather than home or office LANs, security advisories tied to it concern HBA management software and firmware rather than rogue-device or consumer-network abuse. Seeing one of these prefixes on a network points to a SAN-connected server, not a personal computer or IoT device.

Registry / block count

6 distinct MA-L (24-bit OUI) blocks assigned to "Emulex Corporation" [Confirmed] — the IEEE MA-L registry (lines 2751, 10686, 21341, 26489, 34543, 34544); canonical source https://standards-oui.ieee.org/oui/oui.csv

Prefixes

00:00:C9, 00:0A:33, 00:0E:03, 00:10:9B, 00:90:FA, 00:E0:D5 [Confirmed] — the IEEE MA-L registry; cross-corroborated by https://www.macvendorlookup.com/search/00:E0:D5:00:00:00 and https://maclookup.app/vendors/emulex-corporation

Registered addresses

3333 Susan Street, Costa Mesa, CA 92626, US (5 blocks); 2021 Opportunity Drive, Roseville, CA 95678, US (00:0A:33) [Confirmed] — the IEEE MA-L registry

MA-M / MA-S blocks

none found for Emulex in the IEEE MA-M registry or the IEEE MA-S registry [Confirmed] — the IEEE MA-M registry, the IEEE MA-S registry

Registration/assignment dates

not published by IEEE for any of the 6 blocks; third-party "registration date" fields (e.g. on maclookup.app) are scraping-database artifacts, not IEEE facts, and are not recorded here [Confirmed] — the IEEE MA-L registry (no date column); https://maclookup.app/vendors/emulex-corporation

Device / product context

Fibre Channel HBAs and converged network adapters for SAN server connectivity (e.g. LightPulse line; post-acquisition Broadcom Emulex Gen 6/Gen 7 64G FC HBAs) [Confirmed] — https://docs.broadcom.com/doc/Emulex-branded-FC-HBA-Product-Line, https://www.broadcom.com/support/emulex, https://investors.broadcom.com/news-releases/news-release-details/broadcom-introduces-worlds-first-64g-fibre-channel-emulex-host

Corporate history

Avago Technologies acquired Emulex in 2015 (~$764M bid); Avago later renamed itself Broadcom; Emulex continues as a Broadcom brand [Confirmed] — https://www.networkcomputing.com/network-infrastructure/broadcom-issues-764-million-bid-to-acquire-emulex

Security context

known advisories concern Emulex HBA Manager / firmware (enterprise management software), not consumer-network abuse tied to this OUI range [Confirmed] — https://www.dell.com/support/kbdoc/en-my/000194944/dsa-2022-006, https://app.opencve.io/cve/?product=emulex_hba_manager&vendor=broadcom, https://www.ibm.com/support/pages/emulex-firmware-version-414420-list-supported-systems-ibm-servers

IANA reference

not applicable to a MAC/OUI record; left blank rather than fabricated [Confirmed] — n/a

Primary IEEE CSV direct fetch

not completed this session; the 6-block list rests on the local the IEEE MA-L registry snapshot plus two independently-agreeing third-party aggregators [Likely] — https://www.macvendorlookup.com/search/00:E0:D5:00:00:00, https://maclookup.app/vendors/emulex-corporation