I concur shorter RIDs appear to be consoles. E.g. 18103, 18104 for Delaware county dispatch, 93115 for ISP Peru Disp.My experience has been the exact opposite. Shorter IDs (e.g. 93001 for State Police Indianapolis RDC) are typically wireline consoles. Longer radio IDs (e.g. 9312345) are mobiles, portables, and possibly control stations. I have four control stations that all are 49xxxxx radio IDs but they are connected to consoles. For those that might not be familiar, a "control station" in commercial parlance is typically a mobile radio used like a base station, such as at a dispatch position or similar.
As for the first two digits of radio IDs you will see on IPSC a.k.a. SAFE-T, numbers 01 through 92 are counties respectively. Areas that use "regional" P25 systems such as the Indianapolis DPS system (formerly known as MECA) that now serves Marion, Hamilton, and Madison counties generally program their subscriber radio IDs in this same fashion, where the first two digits of the subscriber radio ID is the county number. All of these radio IDs are acually issued by the IPSC (state) NOC, and the subscriber radios have a common radio ID across both systems. Numbers 93 through 99 are state and federal agencies. ISP radios seem to be in the 93xxxxx blocks, INDOT, ISDH and I'm sure many others seem to be in the 94xxxxx blocks, and I know there are some federal radios programmed in the 99xxxxx blocks. I haven't personally observed any radio IDs with prefixes 95, 96, 97, or 98 yet, but I'm sure they are out there or will be at some point in the future.
As to wireline console IDs, they generally follow the same pattern on IPSC/SAFE-T. I can't speak to wireline console IDs on the IDPS system outside Marion County, however in Marion County the wireline console IDs seem to all be in the 790xxx range. It is important to remember these were provisioned in 2007-2008 when IDPS upgraded from Type II SmartNet analog to P25, well before the standardization of radio IDs between IPSC and IDPS, which began at approximately the same time IPSC was upgrading from SmartZone Omnilink mixed mode to a true P25 system.
I forgot to add that there are still several "legacy" radio IDs floating around on the IDPS system, at least on Site 1 and possibly Site 2. As far as I know, these are all five digit numbers generally formatted as 1xxxx. Usually these are older radios that may not have IPSC talkgroups.
I just saw a Wells Co Disp RID of 41027, which doesn't seem to fit the general format.
As far as single digit county RIDs having a zero in front of their number, I saw a Blackford county RID yesterday of 510005 which could be misread as (51)(00)(05), when it is actually (5)(10)(005)