A Wells Fargo routing number AZ identifies a specific branch of the bank within the state of Arizona. For instance, the routing number 124003101 is used for the Wells Fargo branch located at 123 Main Street in Phoenix, Arizona.
Routing numbers facilitate the electronic transfer of funds between banks. They ensure that money sent from one account reaches the intended recipient’s account. The standardization of routing numbers played a pivotal role in the development of the modern banking system.