OUI Lookup
3440b5
IBM
Manufacturer Information
- OUI Prefix
- 3440b5
- Manufacturer
- IBM
- Address
- 3039 E Cornwallis Rd Research Triangle Park NC US 27709
- Last updated
- 6/10/2026
Vendor Statistics
- Total prefixes
- 4
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix 3440B5
The OUI prefix 3440B5 is assigned to IBM, based in 3039 E Cornwallis Rd Research Triangle Park NC US 27709 . 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 IBM.
Other prefixes from IBM
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