OUI Lookup
dc3979
Cisco Systems, Inc
Manufacturer Information
- OUI Prefix
- dc3979
- Manufacturer
- Cisco Systems, Inc
- Address
- 280 Hope Street Mountain View CA US 94041
- Last updated
- 6/8/2026
Vendor Statistics
- Total prefixes
- 1231
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix DC3979
The OUI prefix DC3979 is assigned to Cisco Systems, Inc, based in 280 Hope Street Mountain View CA US 94041 . 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 Cisco Systems, Inc.
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