To be excruciatingly precise, the ONLY cable that is truly
dmx is 5 pin twisted pair shielded. This according to the
USITT standard updated a couple years ago.
4 pin
scroller cable is not dmx, although it is used in lighting. As is 3 pin
xlr, and perhaps 6 or 7 pin. Or cinch-jones. And all the others. Theoretically, 3 conductor extension cords could carry dmx data. So while it is possible that any cable carries a dmx signal it is not truly dmx standard unless it is 5 pin xlr twisted pair shielded cable.