If you are traveling or the local DMR repeater goes down, it would be an excellent idea to have simplex channels programmed into your radio.
There is a large misconception with DMR that if the repeater is inoperative or there is no connection to the internet, that DMR in itself is useless. That can not be further from the truth. Simplex in DMR is essentially the same thought process and analog simplex.
Below is a list of DMR Frequencies compiled from several resources on the internet: