Verizon acknowledged the issue: https://xcancel.com/VerizonNews/status/2011500483072954495

https://downdetector.com/ shows verizon, tmobile, and att. BUT if you look at the magnitude of the outages for tmobile and att vs verizon it's fractions of a percent. Likely those people with tmobile and att reporting when they have trouble communicating with verizon customers.

(Note, you have to click on the providers to see absolute magnitude -- the graphs are scaled to show relative outage over time within a given provider; order of 150k verizon vs 1.5k others)