id Software's Doom having port 666 (unofficially) assigned is a nice touch.
Some other notable examples:
Broadcom/LSI: 1000 Motorola: c0de Chrysalis-ITS: cafe Blackmagic bdbd Indigita Corporation dead Middle Digital Inc. deaf Elcus e1c5 Eagle Tech ea01 Essence Tech e55e Echo ecc0 Daiblo Tech db10 Canny Edge caed CACE Tech cace
If you want to dive, source: https://pci-ids.ucw.cz/
id Software's Doom having port 666 (unofficially) assigned is a nice touch.