Affirmed Networks — 78:22:3D (MA-L)

A MAC address starting with 78:22:3D belongs to Affirmed Networks, typically seen on virtualized mobile-core network equipment rather than a consumer device. Affirmed built software-defined Evolved Packet Core (vEPC) products for mobile carriers, so this prefix is far more likely to surface on a carrier's data-center server or management interface than on an end-user gadget.

Affirmed Networks was founded in 2010 and headquartered at 35 Nagog Park, Acton, MA — the same address IEEE lists for this OUI registration. The company raised roughly $155M in funding and reported over 76 carrier deployments, including named engagements with AT&T, Vodafone, and Etisalat, before Microsoft announced its acquisition on 2020-03-26 (closed 2020-04-23) to seed what became Azure for Operators' private multi-access edge compute line.

The product itself, marketed as the Affirmed Mobile Content Cloud, ran as virtualized network-function software on standard x86 servers rather than proprietary hardware — Intel Network Builders benchmark papers describe deployments on dual-Xeon servers with standard Ethernet and Mellanox NICs. A Micro Focus/OpenText device-support matrix separately lists an "Affirmed Networks Mobile Content Cloud (MCC) appliance" as a supported monitored device type, corroborating that Affirmed-branded network appliances existed as identifiable, manageable devices in carrier networks.

Only a single IEEE MA-L block was found for this company; no MA-M or MA-S sub-allocations turned up in a registry check, so 78:22:3D is Affirmed's entire known address-space footprint. No CVE or security advisory was found for the company or its product line as of an August 2026 search.

Registrant

Affirmed Networks, 35 Nagog Park, Acton, MA 01720, US [Confirmed] — the IEEE MA-L registry (MA-L, 78223D)

Registry class

MA-L (24-bit OUI), single block, no MA-M/MA-S sub-allocations found [Confirmed] — the IEEE MA-L registry; the IEEE MA-S registry; the IEEE MA-M registry (all grepped for "affirmed")

IEEE assignment

78:22:3D → Affirmed Networks [Confirmed] — the IEEE MA-L registry (MA-L, 78223D)

Registry / block size

MA-L (24-bit OUI); single confirmed block; no MA-M or MA-S sub-allocations found [Confirmed] — the IEEE MA-L registry; the IEEE MA-S registry; the IEEE MA-M registry (all grepped for "affirmed")

HQ / registrant address

35 Nagog Park, Acton, MA 01720, US [Confirmed] — the IEEE MA-L registry (MA-L, 78223D)

Company status

Acquired — Microsoft announced the acquisition 2020-03-26, closed 2020-04-23; folded into Azure for Operators / Azure private MEC [Confirmed] — blogs.microsoft.com acquisition announcement

Founded

2010 [Likely] — company background per press coverage of the Microsoft acquisition

Device types

Virtualized mobile-core network function (vEPC/Mobile Content Cloud) software and appliances, typically deployed on carrier data-center x86 servers [Confirmed] — builders.intel.com Affirmed vEPC benchmark whitepaper; docs.microfocus.com Affirmed MCC device-support entry

Notable customers

AT&T, Vodafone, Etisalat named among 76+ reported carrier deployments [Likely] — company/press background at time of acquisition

Verified sample prefix (MA-L, Affirmed Networks)

78:22:3D [Confirmed] — the IEEE MA-L registry (MA-L, 78223D)

Registration date

Unknown — IEEE's public OUI data (the IEEE MA-L registry: Registry, Assignment, Organization Name, Organization Address) contains no assignment/registration date field [Confirmed] — the IEEE MA-L registry

Security history

No CVE recorded in the NVD and no vendor security advisory found for the company or its Mobile Content Cloud product line, as of an August 2026 search [Likely] — nvd.nist.gov search; general web search

Also seen on

no source ties 78:22:3D specifically to one named product model's NIC (e.g. management port vs. data-plane port) beyond "Affirmed Networks equipment generally" — Unknown