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# What is ACH Routing Number?

ACH Routing number number is made up of 9 digits of number used by any financial institution to make electronic transfer. 

In general, routing number has the same function as IBAN but, it can only be used when you want to make transaction to United States while using Topremit (Example: **129 131 673**).

To check the validity of ACH Routing Number, click [here](https://bank.codes/us-routing-number-checker/).