Shenzhen Elink Technology Co., LTD MAC prefixes
Summary
- // what this is
- Shenzhen Elink Technology is registered to MAC prefix
54:EF:92and 1 more in the IEEE OUI database. When a device's MAC address begins with54:EF:92, that block was registered by Shenzhen Elink Technology — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- A prefix match identifies the registry assignment, not a particular device, product, current legal identity, or security state.
About this vendor.
A MAC address beginning with 54:EF:92 or A0:98:57 matches an IEEE MA-L assignment registered to Shenzhen Elink Technology Co., LTD. This identifies the registry assignment; the supplied evidence does not establish a device category or show which products use either prefix.
Each assignment fixes the first 24 bits of a 48-bit MAC address, leaving 24 suffix bits and 16,777,216 possible suffix values per prefix. That is a mathematical address-space count, not a count of devices, shipments, or observed addresses. The two prefixes are separate assignments; they do not establish a shared /24 base.
For both exact prefixes, the first octet has Group bit 0 and Local bit 0. RFC 7042 explains that IEEE assignments have the Local bit zero and Group bit unspecified; a matching address with the Group bit turned on has a different first-octet prefix and is outside this exact match. The record provides no assignment dates.
- Matching prefixes
54:EF:92andA0:98:57[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Device category
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv