OUI Lookup
640b4a
Digital Telecom Technology Limited
Manufacturer Information
- OUI Prefix
- 640b4a
- Manufacturer
- Digital Telecom Technology Limited
- Address
- 1708 Nan Fung Tower, US 00852
- Last updated
- 6/8/2026
Vendor Statistics
- Total prefixes
- 1
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix 640B4A
The OUI prefix 640B4A is assigned to Digital Telecom Technology Limited, based in 1708 Nan Fung Tower, US 00852 . It is a MA-L type block of 24 bits (first three octets). Allows up to 16 million unique MAC addresses. If you find this prefix on your network, the devices belong to Digital Telecom Technology Limited.