Fitbit, Inc.

Fitbit, Inc. holds 4 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 Fitbit, Inc. draw from a pool of about 67,108,864 possible MAC addresses in total.

Registered address: 199 Fremont Street, 14th Fl San Francisco CA US 94105

All 4 prefixes

• 58:A8:7B58:A8:7B:00:00:00 – 58:A8:7B:FF:FF:FF
• 5C:75:AF5C:75:AF:00:00:00 – 5C:75:AF:FF:FF:FF
• C8:B6:FEC8:B6:FE:00:00:00 – C8:B6:FE:FF:FF:FF
• F0:51:EAF0:51:EA:00:00:00 – F0:51:EA: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.