Trim both ends of each corn cob.
Stand each cob upright on a cutting board.
Using a sharp knife, carefully cut each cob in half lengthwise.
Place each half cut-side down and slice lengthwise again.
Cut each quarter in half to create long rib-like pieces.
Repeat with all corn cobs.
Melt the butter and brush it generously over all corn ribs.
Arrange the corn ribs in a single layer in the air fryer basket.
Air fry at 400°F (204°C) for 6 minutes.
Flip or rotate the corn ribs and cook for another 6 minutes until curled and lightly charred.
While cooking, combine mayonnaise and sriracha in a small bowl to make the spicy mayo.
In another bowl, mix chili powder, paprika, salt, garlic powder, cumin, and black pepper.
Transfer the cooked Air Fryer Corn Ribs to a large serving bowl.
Sprinkle evenly with the seasoning mixture.
Top with grated Cotija or Parmesan cheese.
Garnish with fresh cilantro if desired.
Drizzle with spicy mayo or serve it on the side for dipping