Avaya's MAC footprint is split across two registrant strings that should be aliased to one brand: "Avaya Inc" (~52 MA-L blocks) and a newer "Avaya LLC" (1 block), registered at 360 Mt Kemble Ave, Morristown, NJ. These OUIs appear on enterprise IP desk phones (the 9600 series, J-series, and Vantage), conference units, and session/communication-manager gateways. Avaya's corporate history is relevant context: it spun off from Lucent Technologies in 2000, filed Chapter 11 on 19 January 2017 (Southern District of New York) and again on 14 February 2023 (Southern District of Texas), and emerged from the second restructuring on 1 May 2023 — the "Avaya LLC" registrant reflects that post-2023 corporate form. For triage, an Avaya OUI signals enterprise telephony/UC infrastructure (desk phones and gateways), and both the Inc. and LLC strings should resolve to the same brand in enrichment.
- IEEE assignment
- ~52 prefixes → Avaya Inc; 1 → Avaya LLC; registered Morristown, NJ, US [Confirmed] — IEEE MA-L
- Registry / block size
- MA-L; Avaya Inc ~52 blocks, Avaya LLC 1 block [Confirmed] — maclookup.app (IEEE-sourced)
- HQ / country
- 360 Mt Kemble Ave, Morristown, NJ 07960, US [Confirmed] — IEEE MA-L
- Company status
- active; spun off from Lucent Technologies (2000); Chapter 11 filed 2017-01-19 (SDNY, Case 17-10089) and 2023-02-14 (SD Tex); emerged 2023-05-01 [Confirmed] — cases.ra.kroll.com/avaya, davispolk.com
- Device types
- enterprise IP desk phones (9600 series, J-series, Vantage), conference units, session/communication-manager gateways [Confirmed] — maclookup.app
- Notable products
- 9600/J-series IP phones, Vantage, Aura/Communication Manager gateways
- Verified prefix sample
- 2C:F4:C5, 64:C3:54, C8:1F:EA, 3C:B1:5B, 34:75:C7, B0:AD:AA [Confirmed] — maclookup.app, rst.im
- Special note
- Two registrant strings (Avaya Inc / Avaya LLC); "Avaya LLC" reflects the post-2023-restructuring corporate form — alias both to one brand. The IEEE registry publishes no assignment dates, so none is stated here. [Confirmed] — maclookup.app/vendors/avaya-llc
- Related vendors
- historical lineage Lucent Technologies / AT&T
- Analyst note
- An Avaya OUI signals enterprise telephony/UC infrastructure (desk phones and gateways); both Inc. and LLC strings should resolve to the same brand.