Sycamore Networks

Sycamore Networks holds 3 OUI prefixes in the IEEE registry. Each prefix is the first three octets of a MAC address and covers a block of 16,777,216 addresses, so devices built by Sycamore Networks draw from a pool of about 50,331,648 possible MAC addresses in total.

Registered address: 220 Mill Rd Chelmsford MA US 01824

All 3 prefixes

• 00:20:5400:20:54:00:00:00 – 00:20:54:FF:FF:FF
• 00:90:9700:90:97:00:00:00 – 00:90:97:FF:FF:FF
• 00:D0:D100:D0:D1:00:00:00 – 00:D0:D1:FF:FF:FF

Have a full MAC address? Look it up to see which of these prefixes it belongs to — or browse the full manufacturer directory.