Zhone Technologies, Inc.
MAC address prefix 30:4F:75 is registered to Zhone Technologies, Inc. in the IEEE OUI registry. Any device whose MAC address begins with 30:4F:75 has a network interface built by Zhone Technologies, Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address — it covers every MAC from 30:4F:75:00:00:00 to 30:4F:75:FF:FF:FF.
- OUI prefix
- 30:4F:75
- Hyphen form
- 30-4F-75
- MAC range
- 30:4F:75:00:00:00 – 30:4F:75:FF:FF:FF
- Addresses in block
- 16,777,216
- Organization
- Zhone Technologies, Inc.
- Address
- DASAN Tower 8F, 49 Daewangpangyo-ro644beon-gil Bundang-gu Seongnam-si Gyeonggi-do KR 13493
- Source
- IEEE OUI registry
Have a full MAC address? Look it up— we'll also tell you if it's a randomized (private) address rather than a real manufacturer prefix.
Other prefixes from Zhone Technologies, Inc.
Zhone Technologies, Inc. holds 12 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:
Assignment history (4)
The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.
- 2018-12-21Assigned to "DASAN Network Solutions"archived source →
- 2023-07-11Renamed from "DASAN Network Solutions" to "DZS Inc."archived source →
- 2025-08-23Renamed from "DZS Inc." to "Zhone Technologies, Inc."archived source →
- 2026-07-17Assigned to "Zhone Technologies, Inc."
Nearby in the registry
The prefixes assigned immediately before and after 30:4F:75:
- Motorola Mobility LLC, a Lenovo Company30:4B:07
- Panasonic Electric Works Automation Controls Techno Co.,Ltd.30:4C:7E
- Amazon Technologies Inc.30:4D:1F
- Huawei Device Co., Ltd.30:4E:1B
- Tianjin Techua Technology Co., Ltd.30:4E:C3
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP.,LTD30:4F:00
- GN Audio A/S30:50:75
- Xiaomi Communications Co Ltd30:50:CE
- Ennoconn Corporation.30:50:F1
- Skyworth Digital Technology(Shenzhen) Co.,Ltd30:50:FD
- BYK-Gardner GmbH30:51:F8
- GD Midea Air-Conditioning Equipment Co.,Ltd.30:52:23
FAQ
- Which company owns MAC address prefix 30:4F:75?
- MAC address prefix 30:4F:75 is registered to Zhone Technologies, Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 30:4F:75 has a network interface built by Zhone Technologies, Inc..
- What is the OUI 30:4F:75?
- 30:4F:75 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Zhone Technologies, Inc.. It covers every address from 30:4F:75:00:00:00 to 30:4F:75:FF:FF:FF, or 16,777,216 addresses in total. It is also written 30-4F-75.
- How do I find the manufacturer of a MAC address?
- Take the first three octets of the address — in 30:4F:75:00:00:00 that is 30:4F:75 — and look that prefix up in the IEEE OUI registry. If the second-lowest bit of the first octet is set, the address is locally administered (a randomized or private MAC), which belongs to no manufacturer and will not resolve; modern phones and laptops use these by default on each network.
- Where is Zhone Technologies, Inc. located?
- Zhone Technologies, Inc. is listed at DASAN Tower 8F, 49 Daewangpangyo-ro644beon-gil Bundang-gu Seongnam-si Gyeonggi-do KR 13493 in the IEEE OUI registry entry for 30:4F:75. This is the address the organization registered with the IEEE, which may differ from its current operating address.
- How many MAC prefixes does Zhone Technologies, Inc. own?
- Zhone Technologies, Inc. holds 12 OUI prefixes in the IEEE registry, of which 30:4F:75 is one. A device made by Zhone Technologies, Inc. could carry a MAC address from any of them.