Comcast Cable Corporation

Comcast Cable Corporation 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 Comcast Cable Corporation draw from a pool of about 50,331,648 possible MAC addresses in total.

Registered address: 1800 Arch Street Philadelphia PA US 19103

All 3 prefixes

• D8:9C:8ED8:9C:8E:00:00:00 – D8:9C:8E:FF:FF:FF
• F0:46:3BF0:46:3B:00:00:00 – F0:46:3B:FF:FF:FF
• F0:61:F3F0:61:F3:00:00:00 – F0:61:F3: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.