L-3 Linkabit — 2 prefixes (MA-L)

L-3 Linkabit holds two MA-L OUI blocks — 00:05:D6 and 00:0B:7A — both registered under the identical organization name and identical San Diego, CA address, which itself signals an operating entity with recurring registration activity rather than a one-off registrant. The name traces a documented corporate lineage: Linkabit Corporation was founded in 1968 in Los Angeles by Irwin Jacobs, Andrew Viterbi, and Leonard Kleinrock, building SATNET for DARPA and coding-theory links for NASA's Voyager probes before Jacobs and Viterbi left in 1985 to found Qualcomm. The remaining business passed through M/A-COM (1980), Titan Corporation (1990), and was absorbed into L-3 Communications in 2005 — producing the "L-3 Linkabit" registrant name seen in the OUI record. L-3 Communications became L3Harris Technologies after the 2019 Harris merger, and Linkabit operates today as a division making satellite communications, electronic-warfare, and tactical software-defined-radio equipment for defense customers, headquartered in the same San Diego address as the OUI registration.

IEEE assignment

two MA-L prefixes → "L-3 Linkabit", San Diego, CA, US [Confirmed] — the IEEE MA-L registry (cached IEEE registry, lines 37027 & 37297), corroborated by maclookup.app API

Registry / block size

MA-L (24-bit OUI); 2 confirmed prefixes: 00:05:D6, 00:0B:7A [Confirmed] — the IEEE MA-L registry; https://api.maclookup.app/v2/macs/00:05:D6; https://api.maclookup.app/v2/macs/00:0B:7A

HQ / registered address

9890 Town Center Drive, San Diego, CA 92121, US (identical on both blocks) [Confirmed] — the IEEE MA-L registry; maclookup.app agrees

MA-M / MA-S holdings

none found for "L-3 Linkabit" / "Linkabit" [Confirmed] — the IEEE MA-M registry, the IEEE MA-S registry (no match)

Registration/assignment date

Unknown / not applicable — IEEE's public the IEEE MA-L registry has no date column. Third-party maclookup.app shows 2001-06-04 (00:05:D6) and 2002-10-14 (00:0B:7A) plus a 2015-11-17 "updated" stamp on both API records; these are database artifacts from the aggregator, NOT IEEE assignment facts, and are not recorded as such here.

[Confirmed caveat] — https://api.maclookup.app/v2/macs/00:05:D6, https://api.maclookup.app/v2/macs/00:0B:7A

IANA reference

blank / not applicable — MA-L OUI record, no IANA involvement [Confirmed]

Company identity & history

Linkabit Corporation (founded 1968, LA) → sold to M/A-COM (1980) → business + name sold to Titan Corporation (1990) → absorbed by L-3 Communications (2005, source of the "L-3 Linkabit" registrant name) → L-3 became L3Harris Technologies after the 2019 Harris merger; Linkabit now a division of L3Harris in San Diego

[Confirmed] — https://en.wikipedia.org/wiki/Linkabit, https://www.sandiegohistory.org/journal/v55-1/pdf/v55-1west.pdf

Device type / usage context

L3 Communications Advanced Products & Design / Linkabit product lines include SATCOM terminals, electronic warfare (EW) systems, tactical HF/VHF software-defined radios, threat simulators, and SIGINT/IMINT/GEOINT systems — division-level, not tied to either specific OUI

[Likely] — https://marketplace.aviationweek.com/suppliers/l-3-communications-advanced-products-design/

Vendor site status

no standalone Linkabit-branded site remains; legacy https://www2.l3t.com/linkabit/ now 307-redirects to the parent https://www.l3harris.com/ [Confirmed] — https://www2.l3t.com/linkabit/, https://www.l3harris.com/

Security context

no CVEs or advisories found specific to Linkabit-branded hardware in a light search pass; a sourced null, not a claim of absence given the products are defense/government equipment [Unknown]

Related vendors

L3Harris Technologies (current parent), Titan Corporation (historic owner), Qualcomm (1985 spinoff lineage via founders, not a corporate successor)

Company substance verdict

substantive — two independently-registered OUI blocks at one address, a well-documented corporate lineage, and an identifiable division-level product context; not a bare single-OUI shell [Likely] — see citations above