Delta's MAC footprint spans entities that should be aliased to one family: "Delta Electronics, Inc." (the parent; 3 blocks, ~50.3M addresses) and separately "Delta Networks, Inc." (DNI, the networking ODM subsidiary; 3 blocks), plus a generic "Delta Electronics" (1) and a stray "DELTA" registrant that is MA-S (36-bit). Verified samples include 20:F8:5E (Delta Electronics) and 00:30:AB, 18:BE:92, 6C:B9:C5 (Delta Networks). The Delta Networks address is 256 Yang Guang Street, Neihu, Taipei, Taiwan (an older DNI prefix shows a legacy address). These OUIs appear on networking gear (ODM routers, switches, and CPE), PoE switches, managed power supplies, industrial automation, EV chargers, and telecom power. Delta Electronics is a major listed power-electronics firm; Delta Networks (DNI) is its networking ODM arm and has built CPE and routers for ISPs and brands, so a DNI OUI may appear on a device sold under another label. The key analyst point is the ODM pattern plus the registrant split. For triage, a Delta Networks OUI (00:30:AB / 18:BE:92 / 6C:B9:C5) signals ODM-built networking or CPE — identify it by device role, not by "Delta" the brand.
- IEEE assignment
- multiple entities — "Delta Electronics, Inc." (3) + "Delta Networks, Inc." (DNI; 3) + generic "Delta Electronics" (1) + "DELTA" (1, MA-S) [Confirmed] — IEEE MA-L/MA-S
- Registry / block size
- MA-L for Delta Electronics + Delta Networks; the stray generic "DELTA" is MA-S [Confirmed] — maclookup.app (IEEE-sourced)
- HQ / country
- Delta Electronics — Taoyuan/Taipei, Taiwan; Delta Networks — 256 Yang Guang Street, Neihu, Taipei, Taiwan 11491 (older DNI prefix shows a legacy address) [Confirmed] — maclookup.app, udger.com
- Company status
- active; Delta Electronics is a major listed power-electronics firm; Delta Networks (DNI) is its networking ODM arm [Confirmed] — deltaww.com
- Device types
- networking gear (ODM routers/switches/CPE), PoE switches, managed power supplies, industrial automation, EV chargers, telecom power [Confirmed] — maclookup.app
- Notable products
- ODM networking/CPE; managed PoE switches; power systems
- Verified prefix sample
- 20:F8:5E (Delta Electronics); 00:30:AB, 18:BE:92, 6C:B9:C5 (Delta Networks) [Confirmed] — maclookup.app, udger.com
- Special note
- ODM "OUI ≠ brand" — Delta Networks (DNI) has built CPE/routers for ISPs and brands, so a DNI OUI may appear under another label. Flag the Delta Electronics vs Delta Networks registrant distinction. The IEEE registry publishes no assignment dates, so none is stated here. [Confirmed]
- Related vendors
- Delta Networks (DNI) is a subsidiary of Delta Electronics
- Analyst note
- A Delta Networks OUI (00:30:AB / 18:BE:92 / 6C:B9:C5) signals ODM-built networking/CPE — identify by device role, not by "Delta" the brand.