DZS's MAC footprint sits under legacy registrants that should be aliased to one family: "Zhone Technologies, Inc." (12 blocks) plus "DASAN Network Solutions" (~2) and "DASAN Networks, Inc." (~2), for roughly 16 combined. Critically, no standalone "DZS Inc" or "DASAN Zhone Solutions" OUI page exists — new blocks remain registered under legacy Zhone Technologies, which is the key OUI quirk for this vendor. "Paradyne Corp." also holds OUI(s) (Zhone acquired Paradyne in 2005; existence confirmed, exact count not captured this pass). Verified Zhone samples include 00:01:47, 00:30:52, 00:A0:1B, 00:E0:DF, 30:4F:75, and 9C:65:EE. The registered addresses are historically Oakland, California (Zhone) and later Plano, Texas (DZS corporate HQ). These OUIs appear on GPON/fiber access (OLTs, ONTs), broadband gateways, DSL/fiber CPE, and mobile transport — largely supplied to ISPs. DZS Inc. was formed from the 2016 merger of DASAN Network Solutions and Zhone Technologies (as DASAN Zhone Solutions, later renamed DZS). Both the brand-mapping and ISP-supplied-gear angles apply, like Calix, Adtran, and Sercomm. For triage, a Zhone or DASAN OUI on a network means a GPON/fiber/DSL access device, often ISP-supplied (carrier-branded or DZS-branded) — and note there is no "DZS Inc" OUI, so search the legacy Zhone/DASAN names.
- IEEE assignment
- legacy entities — "Zhone Technologies, Inc." (12), "DASAN Network Solutions" (~2), "DASAN Networks, Inc." (~2); ~16 combined; "Paradyne Corp." also holds OUI(s); NO "DZS Inc" / "DASAN Zhone Solutions" page exists [Confirmed] — IEEE MA-L
- Registry / block size
- MA-L; ~16 blocks combined [Likely] — maclookup.app (IEEE-sourced)
- HQ / country
- Zhone historically Oakland, CA; DZS corporate HQ later Plano, TX, US [Confirmed] — maclookup.app, en.wikipedia.org/wiki/DZS
- Company status
- DZS Inc. formed from the 2016 merger of DASAN Network Solutions + Zhone Technologies (as DASAN Zhone Solutions, later renamed DZS); Zhone acquired Paradyne (2005) [Confirmed] — en.wikipedia.org, zhone.com
- Device types
- GPON/fiber access (OLTs, ONTs), broadband gateways, DSL/fiber CPE, mobile transport — largely ISP-supplied [Confirmed] — maclookup.app
- Notable products
- DZS/Zhone OLTs and ONTs, broadband gateways, fiber access platforms
- Verified prefix sample
- 00:01:47, 00:30:52, 00:A0:1B, 00:E0:DF, 30:4F:75, 9C:65:EE (Zhone Technologies) [Confirmed] — maclookup.app
- Special note
- Complex lineage. KEY OUI quirk — new IEEE blocks remain registered under legacy "Zhone Technologies" rather than a "DZS" entity; there is no "DZS Inc" OUI page. Both brand-mapping AND ISP-supplied-gear angles apply (like Calix/Adtran/Sercomm). The IEEE registry publishes no assignment dates, so none is stated here. [Confirmed]
- Related vendors
- Zhone Technologies, DASAN Network Solutions, Paradyne (predecessors/components of the lineage); Calix/Adtran (ISP-supplied-gear peers)
- Analyst note
- A Zhone/DASAN OUI on a network = a GPON/fiber/DSL access device, often ISP-supplied (carrier-branded or DZS-branded); note there is no "DZS Inc" OUI — search the legacy Zhone/DASAN names.