C4:57:81:00:00:00 to C4:57:81:FF:FF:FF
Wingtech Group (HongKong) Limited
Registered address
FLAT/RM 1903 19/F PODIUM PLAZA5HANOI ROAD TSIM SHA TSUIHong Kong
Hong Kong 999077
Block details
- Registry
- MA-L, MAC Address Block Large (OUI)
- Prefix
- C4:57:81 /24
- Addresses in block
- 16,777,216
- Decimal range
- 215,880,105,459,712 to 215,880,122,236,927
- Address type
- Unicast, universally administered
What this block covers
The classic 24 bit OUI. The registrant owns the first three octets and can assign every one of the remaining 16.7 million addresses.
Any MAC address between C4:57:81:00:00:00 and C4:57:81:FF:FF:FF belongs to this assignment. The registrant chooses the remaining 24 bits, so the same prefix can appear on very different products from the same company.
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