I think you are misunderstanding how that page is set up and how RIDs are used. RIDs belong to agencies, not to a state, and may be in use anywhere in the country. What the wiki shows (using New York as an example) is that in NY RID 812xxxx was seen in use by the USPS in NYC on UHF with NAC 482, that is not saying RID 812xxxx and NAC 482 are only assigned to NY. As a matter of fact it has also been seen in use in the Boston area. Another example is 110xxxx which can be found in TX, MD, MA and NC, used by NSA, USAF and USPS, you'd need to look at frequencies and NACs being used to help ID the actual user (especially on encrypted systems). As for your NAC 167, it was seen in use by the FBI in NC, along with NAC 001 which is a common USSS NAC, but that doesn't mean they are the only ones using it.
Both the RID and NAC will
help to identify an agency but is not a guarantee that it is from a particular location or agency. It helps to have a frequency, as well, to go along with the other information. Identifying users isn't based on a easy to identify formula, it takes time and listening and logging over a period of time. There are thousands of agencies and radios yet to be identified.
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