MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
PrefixE4:CE:58:00:00:00 /24
Vendor addressAnhui Realloong Automotive Electronics Co.,Ltd Hefei Anhui CN 230088
Country🇨🇳 China
RegisteredNov 14, 2025
Block rangeE4:CE:58:00:00:00– E4:CE:58:FF:FF:FF
Address capacity16,777,216
AdministrationUniversally administered: its prefix comes from a block registered through the IEEE Registration Authority
TransmissionUnicast: addressed to a single device
SourceIEEE Registration Authority
Address capacity is the size of this registered block, not a count of devices actually manufactured or online. Registration identifies the organization holding the block, not a specific device model or unit.
Curious how a prefix like this turns into a full address? See how MAC addresses are structured →
Example addresses in this block
Where this block sits
Anhui Realloong Automotive Electronics Co.,Ltd holds 1 registered blocks in the IEEE registry, ranking #5,106 of 33,421 organizations by block count.