GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP.,LTD
MAC address prefix C4:E1:A1 is registered to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP.,LTD in the IEEE OUI registry. Any device whose MAC address begins with C4:E1:A1 has a network interface built by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP.,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 C4:E1:A1:00:00:00 to C4:E1:A1:FF:FF:FF.
- OUI prefix
- C4:E1:A1
- Hyphen form
- C4-E1-A1
- MAC range
- C4:E1:A1:00:00:00 – C4:E1:A1:FF:FF:FF
- Addresses in block
- 16,777,216
- Organization
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP.,LTD
- Address
- NO.18 HAIBIN ROAD, DONG GUAN GUANG DONG CN 523860
- 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 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP.,LTD
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP.,LTD holds 188 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:
Assignment history (2)
The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.
- 2019-07-04Assigned to "GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP.,LTD"archived source →
- 2026-07-17Assigned to "GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP.,LTD"
Nearby in the registry
The prefixes assigned immediately before and after C4:E1:A1:
- Huawei Device Co., Ltd.C4:DE:7B
- Espressif Inc.C4:DE:E2
- Realme Chongqing Mobile Telecommunications Corp.,Ltd.C4:DF:39
- IEEE 1904.1 Working GroupC4:E0:32
- Zhengzhou XindaJiean Information Technology Co.,Ltd.C4:E0:DE
- U2S co.C4:E1:7C
- HUAWEI TECHNOLOGIES CO.,LTDC4:E2:87
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP.,LTDC4:E3:9F
- EnGenius Technologies, Inc.C4:E3:CE
- Piper Networks, Inc.C4:E5:06
- Mechatro, Inc.C4:E5:10
- Arcadyan CorporationC4:E5:32
FAQ
- Which company owns MAC address prefix C4:E1:A1?
- MAC address prefix C4:E1:A1 is registered to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP.,LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C4:E1:A1 has a network interface built by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP.,LTD.
- What is the OUI C4:E1:A1?
- C4:E1:A1 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP.,LTD. It covers every address from C4:E1:A1:00:00:00 to C4:E1:A1:FF:FF:FF, or 16,777,216 addresses in total. It is also written C4-E1-A1.
- How do I find the manufacturer of a MAC address?
- Take the first three octets of the address — in C4:E1:A1:00:00:00 that is C4:E1:A1 — 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 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP.,LTD located?
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP.,LTD is listed at NO.18 HAIBIN ROAD, DONG GUAN GUANG DONG CN 523860 in the IEEE OUI registry entry for C4:E1:A1. This is the address the organization registered with the IEEE, which may differ from its current operating address.
- How many MAC prefixes does GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP.,LTD own?
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP.,LTD holds 188 OUI prefixes in the IEEE registry, of which C4:E1:A1 is one. A device made by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP.,LTD could carry a MAC address from any of them.