Many have been pointed to the site already, but I need to add a few more notes to this,
the site is http://nxmanager.net If you scroll to the bottom of the page, you will find a block where you enter your information in at.
1 Please use CAPS to enter your information into the database.
2 There are only 65519 UID’s that NXDN technology USES unlike DMR.
3 YES, THERE CAN BE DUPES, but we in some cases use OTAA to transmit our CALL
4 SUGGESTED UID; use the last 5 digits of your DMR ID, that is fine and will work
UNLESS it is above 65519, then you will need to use another numeric.

This is not my rule or evil way of doing things, this is how the CAI of NXDN is laid out.

I know that VHF marine band will transition to NXDN forthcoming, but I hear they are taking out the UID and will have the option to transmit the vessel name or callsign of vessel (rumor is it will be just plain 4800 baud / 6.25 bandwidth digital FDMA, but that could change)

SO, please, kindly keep it within the parameters of 1 to 65519, and even though you CAN enter your full DMR ID, the new database that will be put together forthcoming, will be used to parse your information for the DASHBOARD logs.
Once we have a newer database built, tested and ready for prime use, Bill N2WNS or one of the other admins will chime in and let you know.

For MMDVM email List go to: https://groups.yahoo.com/neo/groups/mmdvm/info
For the FaceBook PiStar group: https://www.facebook.com/groups/pistar/

I will add this to the Side Links area also.

Thanks and Welcome newcomers!