I received a spam call from this number. An automated recording told me to go to myattbonus.com to claim a bonus of a few hundred dollars from AT&T. I have been receiving these calls nonstop from different numbers everyday. Other numbers associated with this issue are:
800-176-1947
800-110-2801
800-311-6634
800-199-1668
800-862-1877
800-203-3068
800-312-2525
800-843-1356
800-237-3340
800-146-2484
800-107-6574