Radisys Corporation — 3 prefixes (MA-L)

A MAC address beginning 00:00:50, 50:45:94, or 28:B9:D9 belongs to Radisys Corporation, an Oregon-based telecom and embedded-systems vendor — typically seen on carrier network infrastructure rather than consumer devices, such as RAN base station hardware, VoLTE/VoWiFi media-processing gear, and embedded computing modules deployed inside mobile-network cores.

Radisys was founded in 1987 and traded as NASDAQ: RSYS before Reliance Industries acquired it in 2018; it remains an operating company in 2026, most recently publicizing a 3GPP Release 19 5G-Advanced RAN software update. It holds three IEEE MA-L blocks, registered under slightly different name/address forms as the company moved offices: "RADISYS CORPORATION" at a Beaverton, OR address, "Radisys" at a Hillsboro, OR address, and "Radisys Corporation" at a second Hillsboro, OR address.

The company's own product lines historically associated with these OUIs — MediaEngine, MobilityEngine, and FlowEngine — are RAN, media-processing, and data-plane infrastructure products, plus legacy embedded hardware (ATCA blades, COM Express modules, rack-mount servers). No independent third-party corroboration (packet-capture vendor notes, device-fingerprint databases) tying a specific device model to these MAC prefixes was found in this pass; the device-type mapping rests on Radisys's own product descriptions.

IEEE's public OUI registry carries no assignment or registration date for any of the three blocks. Third-party MAC-lookup aggregators surface dates (e.g. 1998-04-22 for 00:00:50; a 2015-11-17 "last updated" stamp for 28:B9:D9), but these are database-scrape artifacts of the aggregator, not IEEE-attested facts, and are not recorded here as registration dates.

No Radisys-specific CVEs or security advisories were found. The only RADIUS-adjacent finding was the unrelated BlastRADIUS protocol flaw (CVE-2024-3596), a name collision with no connection to Radisys Corporation.

IEEE assignment

3 prefixes → Radisys Corporation / Radisys, registered Beaverton, OR and Hillsboro, OR, US [Confirmed] — the IEEE MA-L registry (IEEE-sourced)

Registry / block size

MA-L (24-bit OUI) x3; holds 3 IEEE prefixes (~50.3M addresses total) [Confirmed] — the IEEE MA-L registry

HQ / country

Hillsboro, OR, US (current registered addresses); historic address Beaverton, OR [Confirmed] — the IEEE MA-L registry

Company status

active, operating under Reliance Industries since 2018 acquisition (formerly NASDAQ: RSYS) [Confirmed] — https://en.wikipedia.org/wiki/Radisys, https://www.radisys.com/

Device types

RAN/small-cell base station equipment, VoLTE/VoWiFi media-processing gear, embedded compute modules used in mobile-network infrastructure [Likely] — https://www.radisys.com/

Notable products

MediaEngine, MobilityEngine, FlowEngine [Likely] — https://www.radisys.com/

Verified sample prefixes

00:00:50, 50:45:94, 28:B9:D9 [Confirmed] — the IEEE MA-L registry

Registration dates

Unknown per IEEE; third-party aggregator dates (1998-04-22 for 00:00:50; 2015-11-17 "last updated" for 28:B9:D9) are database artifacts, not IEEE facts [Confirmed] — https://maclookup.app/macaddress/000050, https://maclookup.app/macaddress/28B9D9

Security context

no Radisys-specific CVEs or advisories found; BlastRADIUS (CVE-2024-3596) is an unrelated name collision [Unknown] — https://www.helpnetsecurity.com/2024/07/09/blastradius-radius-protocol-vulnerability/

Related vendors

none identified beyond parent Reliance Industries (post-2018 acquisition) [Confirmed] — https://en.wikipedia.org/wiki/Radisys

Analyst note

three-OUI vendor with clear, verifiable company substance (active telecom/embedded-infrastructure supplier) — not a bare single-OUI shell registration; device-type mapping is vendor-sourced, not independently corroborated by third-party device fingerprints.