If “data” related (not voice) then this DDoS attack may be to blame: https://twitter.com/MichaelCoudrey/status/1272640965358923776
Source: https://www.digitalattackmap.com/#anim=1&color=0&country=ALL&list=0&time=18427&view=map
Thanks for the Sprint link...
My IT service company sent out an email on Friday saying that DDoS attacks are on the rise. Seems like there is a season for them!