Carrier Corporation — 2 prefixes (MA-L)

A MAC address starting with 00:02:52 or 34:6D:9C belongs to Carrier Corporation, the HVAC, refrigeration, and fire-and-security manufacturer — typically seen on commercial building-automation controllers, connected thermostats, and sensor hardware rather than consumer network gear.

Carrier holds two distinct IEEE MA-L (/24) assignments under the identical organization name: 00:02:52, registered to Farmington, CT, and 34:6D:9C, registered to East Syracuse, NY. Both are dedicated blocks, not sub-allocations of a shared IEEE base, and both are independently confirmed in the cached IEEE OUI registry.

The company is a substantial, identifiable NYSE-listed manufacturer (ticker CARR) with product lines — i-Vu building-automation controllers and Connect Wi-Fi thermostats among them — that plausibly draw from these OUI ranges, going beyond a bare single-OUI shell registration.

On security posture: no CVE is recorded in the NVD as of an August 2026 search that ties a vulnerability specifically to hardware carrying the 00:02:52 or 34:6D:9C prefixes. Carrier's Block Load HVAC load-calculation software (CVE-2024-10930, an uncontrolled-search-path/DLL-hijack flaw) is a design-software issue unrelated to a specific OUI-bearing device, and the HID Mercury access-control panel zero-days disclosed by Trellix affect Carrier as one of 20+ OEM partners at the panel level, not a Carrier-manufactured chipset. Carrier runs its own Global Product Security Program and is a CISA-designated CVE Numbering Authority.

IEEE assignment

00:02:52 → Carrier Corporation, One Carrier Place, Farmington, CT 06034, US [Confirmed] — the IEEE MA-L registry 000252

IEEE assignment

34:6D:9C → Carrier Corporation, 6304 Thompson Rd, East Syracuse, NY 13057, US [Confirmed] — the IEEE MA-L registry 346D9C

Registry / block size

MA-L (24-bit OUI); 2 dedicated IEEE prefixes under the exact org name "Carrier Corporation" [Confirmed] — the IEEE MA-L registry (registries fetched 2026-08-07)

Company status

active, publicly traded (NYSE: CARR) [Confirmed] — carrier.com

Device types

commercial/industrial HVAC, refrigeration, building-automation and fire-and-security hardware [Likely] — carrier.com (product-context inference, not a per-device OUI confirmation)

Notable products

i-Vu building-automation controllers, Connect Wi-Fi thermostats [Confirmed] — carrier.com

Disambiguation

other "Carrier"-named registry rows are unrelated distinct legal entities and must not be conflated with this vendor — the IEEE MA-L registry 9CF61A "Carrier Fire & Security" (NL), the IEEE MA-L registry 0024BF "Carrier Culoz SA" (FR), the IEEE MA-L registry 00016D "CarrierComm Inc." (US), the IEEE MA-L registry 00E097 "CARRIER ACCESS CORPORATION" (US)

[Confirmed] — the IEEE MA-L registry

Third-party date check

maclookup.app corroborates the vendor name for 00:02:52 (Wireshark short name "Carrier") but lists no registration date; no third-party "date registered" artifact found for either prefix and none is asserted [Confirmed] — maclookup.app/macaddress/000252/mac-address-details

Security context

CVE-2024-10930 affects Carrier's Block Load HVAC design software (v4.10-4.16), not OUI-bearing hardware; Trellix-disclosed HID Mercury access-control panel zero-days affect Carrier as one of 20+ OEM partners, not a Carrier-manufactured chipset; no CVE recorded as of an August 2026 search tied specifically to 00:02:52 or 34:6D:9C hardware [Confirmed] — windowsforum.com CVE-2024-10930 advisory summary, therecord.media, corporate.carrier.com CVE Numbering Authority announcement

Analyst note

a MAC starting with 00:02:52 or 34:6D:9C reliably identifies Carrier Corporation hardware for asset classification in commercial/industrial building-automation contexts; neither prefix is part of a shared IEEE base, so the identification does not carry the sub-allocation caveats that apply to shared blocks like 70:B3:D5.