Ambit Microsystems Corporation — 3 prefixes (MA-L)

A MAC address beginning with 00:D0:59, 00:02:8A, or 00:0E:9B belongs to Ambit Microsystems Corporation, a Taiwan-based OEM/ODM electronics manufacturer. Its hardware most often surfaces as ISP-issued cable modems, DSL modems, and wireless routers or gateways deployed across North America and Europe through the 2000s and 2010s — frequently rebadged under a carrier's or partner's brand rather than sold under the Ambit name itself.

Ambit was headquartered at 5F-1, 5 Hsin-An Road, Science-Based Industrial Park, Hsinchu, Taiwan, and worked as an OEM/ODM supplier of broadband customer-premises equipment, with units later marketed under names including Netgear, Cisco, and Proxim. In March 2009 the company renamed itself Ubee Interactive — the same legal entity continuing under a new brand — and was later absorbed into Hon Hai Precision Industry (Foxconn), around 2013.

Devices tied to these prefixes include cable modems such as the Orion 3000 and later Ubee-branded units, USB/PCMCIA/Mini-PCI/PCI wireless network adapters, and combo analog-phone/cable gateways such as the Ubee EVW3200. A widely cited 2016 internet-wide scan found roughly 229,000 Ubee/Ambit-derived devices exposed on the public internet, and multiple published advisories describe default-credential and SNMP-exposure issues on Ambit/Ubee cable modems (U10C019) and the Ubee EVW3226 VoIP router.

IEEE's public OUI registry does not publish assignment or registration dates for these blocks. Any "date registered" shown on third-party MAC lookup tools is a database artifact of that tool, not an IEEE fact, and is not treated as an IEEE-sourced date for this vendor.

IEEE assignment

3 confirmed prefixes → Ambit Microsystems Corporation, registered Hsinchu, Taiwan [Confirmed] — IEEE the IEEE MA-L registry

Registry / block size

MA-L (24-bit OUI); 3 confirmed blocks (00:D0:59, 00:02:8A, 00:0E:9B); a possible 4th block (00:16:CE) is unconfirmed [Confirmed core / Likely 4th] — IEEE the IEEE MA-L registry; techinfodepot.shoutwiki.com

HQ / country

5F-1, 5 Hsin-An Road, Science-Based Industrial Park, Hsinchu, Taiwan 300, TW [Confirmed] — IEEE the IEEE MA-L registry

Company status

renamed to Ubee Interactive (March 2009); later absorbed into Hon Hai Precision Industry / Foxconn (~2013); original entity no longer operates under the "Ambit" name [Confirmed] — en.wikipedia.org/wiki/Ubee_Interactive

Device types

cable modems, DSL modems, wireless routers, wireless network adapters, analog-phone/cable combo gateways [Confirmed] — techinfodepot.shoutwiki.com

Notable products

Orion 3000 cable modem, Ubee EVW3200, Ubee EVW3226, Ubee DDW3611 [Confirmed] — techinfodepot.shoutwiki.com

Verified sample prefixes

00:D0:59, 00:02:8A, 00:0E:9B [Confirmed] — IEEE the IEEE MA-L registry

Special note

OEM/ODM supplier — many Ambit-built units were rebadged under Netgear, Cisco, and Proxim brand names rather than sold as "Ambit"; a device labeled with another brand may still be Ambit-built hardware [Confirmed] — techinfodepot.shoutwiki.com. IEEE publishes no registration date for these OUIs; do not display a third-party aggregator date as an IEEE fact.

Related vendors

Ubee Interactive (renamed entity, same legal company); Hon Hai Precision Industry / Foxconn (later acquirer) [Confirmed] — en.wikipedia.org/wiki/Ubee_Interactive

Analyst note

Multiple published default-credential and SNMP-exposure advisories exist for Ambit/Ubee-built cable modems and routers, plus a large internet-exposure scan; treat internet-facing hardware on these prefixes as a higher-priority target for credential and firmware hygiene checks.

[Confirmed] — seclists.org, helpnetsecurity.com