Lantronix, Inc. — 4 prefixes (MA-L)

Lantronix, Inc. holds four MA-L (24-bit OUI) blocks registered to "Lantronix" — 00:80:A3, 00:C0:F2, 00:0D:2C, and 00:0F:2C — about 67.1 million addresses in total. The blocks do not all share one registry address: 00:80:A3 and 00:C0:F2 carry the current Irvine, California headquarters address (48 Discovery, Suite 250, Irvine, CA 92618), while 00:0D:2C lists a UK address in Basingstoke, Hampshire and 00:0F:2C lists an Austin, Texas address — a normal artifact of allocations made at different times and sites. Lantronix is a publicly-traded company (Nasdaq: LTRX) that builds serial-to-Ethernet device servers, embedded networking modules, industrial IoT gateways, and out-of-band management hardware, so a Lantronix OUI on a network most often signals a bridge connecting legacy serial (RS-232/422/485) equipment to TCP/IP. The most important caveat for asset classification is the embedded-module footprint: the XPort family is widely designed into third-party OEM products, so 00:80:A3 or 00:C0:F2 can appear on equipment that is not branded Lantronix. The second caveat is security posture: Lantronix serial-to-Ethernet devices have a long, well-documented CVE history, including the April 2026 "BRIDGE:BREAK" set of 22 EDS-series flaws (CVSS up to 9.8) and the long-standing UDP port 30718 Telnet-password disclosure on UDS and xDirect units — both frequently found exposed on the public internet in ICS/SCADA contexts. No registration dates appear here because IEEE publishes none; any "date registered" shown by third-party tools (e.g. 1998-04-22 for 00:80:A3) is a database artifact, not an IEEE fact.

IEEE assignment

4 prefixes → Lantronix, registered across Irvine CA, Basingstoke UK, and Austin TX [Confirmed] — IEEE MA-L (enrichment/registries/oui.csv)

Registry / block size

MA-L (24-bit OUI); all four assignments are MA-L (~67.1M addresses total) [Confirmed] — IEEE MA-L (enrichment/registries/oui.csv). NOTE: IEEE's public OUI data publishes NO assignment/registration date (oui.csv columns are only Registry, Assignment, Organization Name, Organization Address); any "date registered" on third-party tools is a database artifact, not an IEEE fact. No MA-M or MA-S assignments exist for Lantronix in the cached registries (mam.csv / oui36.csv both return none).

HQ / country

48 Discovery, Suite 250, Irvine, CA 92618, US (registry address on 00:80:A3 / 00:C0:F2; also current corporate HQ) [Confirmed] — IEEE MA-L / maclookup.app

Company legal name / status

Lantronix, Inc.; active, public company (Nasdaq: LTRX), 250+ employees per company site [Confirmed] — lantronix.com/about-us

Device types

serial-to-Ethernet device servers (UDS, xDirect, EDS series); embedded networking modules (XPort, xPico); industrial IoT gateways and routers; out-of-band management systems and KVM/console servers; network switches and media converters; system-on-modules [Confirmed] — lantronix.com

Notable products

XPort / XPort EDGE (embedded serial-to-Ethernet module); xDirect / xDirect-IAP; UDS1100 / UDS2100; EDS3000PS / EDS5000 (rack-mount multi-port device servers); EDS-MD (medical IoT gateway); Percepxion (cloud device-management platform) [Confirmed] — lantronix.com/products

Verified sample prefixes (all MA-L, Lantronix)

00:80:A3, 00:C0:F2, 00:0D:2C, 00:0F:2C [Confirmed] — IEEE MA-L (enrichment/registries/oui.csv)

Market segments

enterprise IT (out-of-band management); industrial/OT (ICS serial connectivity, Modbus); medical IoT; smart cities; automotive/telematics; aerospace and defense (NDAA-compliant unmanned systems); healthcare [Confirmed] — lantronix.com/solutions, lantronix.com/about-us

Security note

Lantronix serial-to-Ethernet hardware has an extensive CVE history. (1) BRIDGE:BREAK (April 2026, Forescout): 22 flaws in EDS3000PS / EDS5000 series — RCE, auth bypass, firmware tampering, device takeover, DoS; CVSS up to 9.8; ~20,000 devices exposed online. (2) UDP port 30718 Telnet password disclosure on UDS / xDirect (Metasploit module exists; ~6,400+ exposed on Shodan), often in ICS/SCADA. (3) XPort EDGE missing-authentication flaw (CVE-2025-2567) affecting Automatic Tank Gauge systems. (4) EDS5000 OS command injection with root execution. Mitigation: patch firmware, replace default credentials, network-segment converters, avoid internet exposure. [Confirmed] — thehackernews.com (BRIDGE:BREAK), securityaffairs.com (port 30718), zeropath.com (CVE-2025-2567), cvedetails.com/vendor/3160

Special note

the XPort embedded-module family is widely designed into third-party OEM products, so 00:80:A3 / 00:C0:F2 may resolve to Lantronix even on equipment not branded Lantronix. [Confirmed] — lantronix.com serial-to-Ethernet product pages

Analyst note

a Lantronix OUI most likely indicates a serial-to-Ethernet bridge for legacy RS-232/422/485 gear in industrial, medical, out-of-band-management, or smart-city deployments. Given the CVE history, treat an internet-exposed Lantronix device server as a high-priority review item rather than a benign endpoint.