Yulong Computer Telecommunication Scientific (Shenzhen) Co.,Ltd
MAC address prefix 54:DC:1D is registered to Yulong Computer Telecommunication Scientific (Shenzhen) Co.,Ltd in the IEEE OUI registry. Any device whose MAC address begins with 54:DC:1D has a network interface built by Yulong Computer Telecommunication Scientific (Shenzhen) 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 54:DC:1D:00:00:00 to 54:DC:1D:FF:FF:FF.
- OUI prefix
- 54:DC:1D
- Hyphen form
- 54-DC-1D
- MAC range
- 54:DC:1D:00:00:00 – 54:DC:1D:FF:FF:FF
- Addresses in block
- 16,777,216
- Organization
- Yulong Computer Telecommunication Scientific (Shenzhen) Co.,Ltd
- Address
- Road NO2, West of Industrial Park,North of Science & Technology Park Dongguan Guangdong CN 518057
- 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 Yulong Computer Telecommunication Scientific (Shenzhen) Co.,Ltd
Yulong Computer Telecommunication Scientific (Shenzhen) Co.,Ltd holds 7 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.
- 2016-07-29Assigned to "Yulong Computer Telecommunication Scientific (Shenzhen) Co.,Ltd"archived source →
- 2026-07-17Assigned to "Yulong Computer Telecommunication Scientific (Shenzhen) Co.,Ltd"
Nearby in the registry
The prefixes assigned immediately before and after 54:DC:1D:
- Hangzhou Ezviz Software Co.,Ltd.54:D6:0D
- Proximus54:D7:51
- Hewlett Packard Enterprise54:D7:E3
- Huawei Device Co., Ltd.54:D9:C6
- BRILLIANTTS CO., LTD54:D9:E4
- Fibrain54:DB:A2
- Silicon Laboratories54:DC:E9
- Huawei Device Co., Ltd.54:DD:21
- Samsung Electronics Co.,Ltd54:DD:4F
- Sevio Srl54:DE:D0
- zte corporation54:DE:D3
- Ulterius Technologies, LLC54:DF:00
FAQ
- Which company owns MAC address prefix 54:DC:1D?
- MAC address prefix 54:DC:1D is registered to Yulong Computer Telecommunication Scientific (Shenzhen) Co.,Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 54:DC:1D has a network interface built by Yulong Computer Telecommunication Scientific (Shenzhen) Co.,Ltd.
- What is the OUI 54:DC:1D?
- 54:DC:1D is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Yulong Computer Telecommunication Scientific (Shenzhen) Co.,Ltd. It covers every address from 54:DC:1D:00:00:00 to 54:DC:1D:FF:FF:FF, or 16,777,216 addresses in total. It is also written 54-DC-1D.
- How do I find the manufacturer of a MAC address?
- Take the first three octets of the address — in 54:DC:1D:00:00:00 that is 54:DC:1D — 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 Yulong Computer Telecommunication Scientific (Shenzhen) Co.,Ltd located?
- Yulong Computer Telecommunication Scientific (Shenzhen) Co.,Ltd is listed at Road NO2, West of Industrial Park,North of Science & Technology Park Dongguan Guangdong CN 518057 in the IEEE OUI registry entry for 54:DC:1D. This is the address the organization registered with the IEEE, which may differ from its current operating address.
- How many MAC prefixes does Yulong Computer Telecommunication Scientific (Shenzhen) Co.,Ltd own?
- Yulong Computer Telecommunication Scientific (Shenzhen) Co.,Ltd holds 7 OUI prefixes in the IEEE registry, of which 54:DC:1D is one. A device made by Yulong Computer Telecommunication Scientific (Shenzhen) Co.,Ltd could carry a MAC address from any of them.