Here is a source, supposedly updated daily, with all DMR contacts sorted by nation and state.
The foxhollow server downloads & processes the nightly full database from the DMR-MARC website. If you know of someone that got a new ID today, the foxhollow download ZIP file will have that new ID by tomorrow morning.
I currently create the files in CS700/MD380 CSV format as well as CS750 XLSX format. If another type of file is needed, send me a message and I'll add it to the daily dumps.