Unofficial license research tool – not affiliated with, endorsed by, or operated by the FCC. Built from FCC ULS public bulk data; may lag or differ from the official record. View: Modern | Classic
SpectrumLookup.com FCC License Search · Classic view
Table of Contents Callsign Licensee Site / Market / Frequency ULS License Search Advanced / Geographic DMR ID ↔ IP About the data

DMR Radio ID ↔ IP

MOTOTRBO CAI addressing maps a 24-bit Radio ID to an IP address. Default CAI is 12 (editable). Enter a Radio ID and press Tab or Enter to fill the IP (same for IP → ID). This is a local calculator only; it does not look up licenses or radios on the network.

IP = CAI . ((id ≫ 16) & 255) . ((id ≫ 8) & 255) . (id & 255). Reverse uses the last three octets. Valid IDs: 1–16,777,215.

Radio ID ↔ IP
default 12
Result—

Table of Contents | How to use SpectrumLookup | About the data

About · Privacy · Terms · Feedback · DMR ID ↔ IP · How to use
Not affiliated with or endorsed by the Federal Communications Commission. Data from FCC public ULS records. Data current as of Nov 12, 2026.

Need help with a radio system?

I'm Ty Calta, KF4DLA, Director of Service and Engineering at one of the largest Motorola dealers in the US. I'm a former Motorolan who traveled the world fixing broken radio systems, and I've worked in land mobile radio for more than 28 years. I specialize in MOTOTRBO, with many years on Capacity Max, Linked Capacity Plus/CPMS, Capacity Plus/CPSS, IP Site Connect/IPSC, and conventional MOTOTRBO. I enjoy troubleshooting radio systems and coverage problems. You can reach me at radio@spectrumlookup.com or on LinkedIn.