The starting point is 0, 64, 267 and it ends at 210, 64, 267 ending with a blaze spawner
Seed: 1120002989734391763
I might have found with my friend the longest naturally spawning hallway in a nether fortress, if you want to find it go to the nether and type one of the two cords with the /tp command
by TechnicalYogurt282