Chengdu Quanjing Intelligent Technology Co.,Ltd
MAC address prefix E0:EF:02 is registered to Chengdu Quanjing Intelligent Technology Co.,Ltd in the IEEE OUI registry. Any device whose MAC address begins with E0:EF:02 has a network interface built by Chengdu Quanjing Intelligent Technology Co.,Ltd. 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 E0:EF:02:00:00:00 to E0:EF:02:FF:FF:FF.
- OUI prefix
- E0:EF:02
- Hyphen form
- E0-EF-02
- MAC range
- E0:EF:02:00:00:00 – E0:EF:02:FF:FF:FF
- Addresses in block
- 16,777,216
- Organization
- Chengdu Quanjing Intelligent Technology Co.,Ltd
- Address
- Building A2, Chi Yuen Technology Park, 1001 College Avenue, Nanshan District, Shenzhen,P.R.C. Shenzhen Guangdong CN 518000
- 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 Chengdu Quanjing Intelligent Technology Co.,Ltd
Chengdu Quanjing Intelligent Technology Co.,Ltd holds 4 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:
Assignment history (1)
The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.
- 2026-07-17Assigned to "Chengdu Quanjing Intelligent Technology Co.,Ltd"
Nearby in the registry
The prefixes assigned immediately before and after E0:EF:02:
- Olive Telecommunication Pvt. LtdE0:E8:E8
- Apple, Inc.E0:EB:40
- Shanghai Hulu Devices Co., LtdE0:EB:62
- vastriver Technology Co., LtdE0:ED:1A
- Shenzhen Friendcom Technology Development Co., LtdE0:ED:C7
- Panasonic Automotive Systems Company of AmericaE0:EE:1B
- Lintes Technology Co., Ltd.E0:EF:25
- Nintendo Co.,LtdE0:EF:BF
- DigitalwattE0:F2:11
- Sichuan Tianyi Comheart Telecom Co.,LTDE0:F3:18
- Elkor Technologies Inc.E0:F3:25
- HUAWEI TECHNOLOGIES CO.,LTDE0:F3:30
FAQ
- Which company owns MAC address prefix E0:EF:02?
- MAC address prefix E0:EF:02 is registered to Chengdu Quanjing Intelligent Technology Co.,Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E0:EF:02 has a network interface built by Chengdu Quanjing Intelligent Technology Co.,Ltd.
- What is the OUI E0:EF:02?
- E0:EF:02 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Chengdu Quanjing Intelligent Technology Co.,Ltd. It covers every address from E0:EF:02:00:00:00 to E0:EF:02:FF:FF:FF, or 16,777,216 addresses in total. It is also written E0-EF-02.
- How do I find the manufacturer of a MAC address?
- Take the first three octets of the address — in E0:EF:02:00:00:00 that is E0:EF:02 — 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 Chengdu Quanjing Intelligent Technology Co.,Ltd located?
- Chengdu Quanjing Intelligent Technology Co.,Ltd is listed at Building A2, Chi Yuen Technology Park, 1001 College Avenue, Nanshan District, Shenzhen,P.R.C. Shenzhen Guangdong CN 518000 in the IEEE OUI registry entry for E0:EF:02. This is the address the organization registered with the IEEE, which may differ from its current operating address.
- How many MAC prefixes does Chengdu Quanjing Intelligent Technology Co.,Ltd own?
- Chengdu Quanjing Intelligent Technology Co.,Ltd holds 4 OUI prefixes in the IEEE registry, of which E0:EF:02 is one. A device made by Chengdu Quanjing Intelligent Technology Co.,Ltd could carry a MAC address from any of them.