Celestica holds 8 IEEE blocks (MA-L and MA-S; about 117.4 million addresses total) registered as "CELESTICA INC." at 1900-5140 Yonge Street, PO Box 42, Toronto, Ontario, Canada. Verified samples include 00:E0:EC and 0C:48:C6. These OUIs appear on servers, datacenter switches (including high-speed Ethernet), storage, and network appliances — built for hyperscalers and OEM brands. On corporate history: Celestica began as the Toronto manufacturing operations of IBM Canada, was incorporated and first known as Celestica in 1994, was sold to Onex Corporation in 1996 (for roughly US$750M), and held its IPO on 1998-06-29. It is a major EMS/ODM and a peer to Foxconn, Flex, and Jabil. The key analyst point is the EMS "OUI ≠ brand" pattern: a Celestica OUI identifies the manufacturer, not the brand on the box, and the device is often sold or deployed under a hyperscaler's or OEM's name; the presence of MA-S (small) blocks alongside MA-L suggests some low-volume or specialized product lines. For triage, Celestica OUIs are common on datacenter switches and white-box servers.
- IEEE assignment
- 8 prefixes → "CELESTICA INC.", registered Toronto, Canada [Confirmed] — IEEE MA-L + MA-S
- Registry / block size
- MA-L + MA-S; 8 blocks (~117.4M addresses) [Confirmed] — maclookup.app (IEEE-sourced)
- HQ / country
- 1900-5140 Yonge Street, PO Box 42, Toronto, Ontario M2N 6L7, Canada [Confirmed] — maclookup.app
- Company status
- active; began as IBM Canada's Toronto manufacturing ops, incorporated/first known as Celestica 1994, sold to Onex Corporation 1996 (~US$750M), IPO 1998-06-29 [Confirmed] — corporate history
- Device types
- servers, datacenter switches (incl. high-speed Ethernet), storage, network appliances — built for hyperscalers and OEM brands [Confirmed] — maclookup.app
- Notable products
- datacenter switches, white-box/hyperscale servers, storage
- Verified prefix sample
- 00:E0:EC, 0C:48:C6 [Confirmed] — maclookup.app
- Special note
- EMS "OUI ≠ brand" — a Celestica OUI identifies the manufacturer, not the brand on the box; the device is often deployed under a hyperscaler's or OEM's name. MA-S blocks alongside MA-L suggest some low-volume/specialized lines. Ex-IBM manufacturing heritage. The IEEE registry publishes no assignment dates, so none is stated here. [Confirmed]
- Related vendors
- Foxconn, Flex, Jabil (EMS peers); IBM (ex-parent lineage)
- Analyst note
- A Celestica OUI identifies the manufacturer, not the brand on the box — often deployed under a hyperscaler's or OEM's name; common on datacenter switches and white-box servers.