A reference is a name a provider chose to give you. It is not a sample of the provider's work, and it is not a count of complaints. Before a reference counts for anything in your comparison, find out how the list was assembled and what kind of question it can answer.
What a reference can and cannot show
A reference can show that a named person was willing to speak with you and that the provider had at least one job for that person. It cannot show how often the provider's work goes well, how the provider handles a dispute, or whether the terms in the provider's paper are applied the same way for every customer. A short list and a long list can describe the same provider, because the length of the list says little about the customers left off it.
Ask how the list was made
Ask who chose the names, when each person was last served, and whether each person was asked before being listed. Ask whether the provider has ever removed a name from its list and why. A provider that answers these questions in plain words has given you something to check. A provider that answers with a general assurance has given you a sales statement, which belongs in the same pile as any other pitch.
Match the reference to the job
A reference is only useful for the kind of purchase the named person actually made. If you are comparing a vehicle service contract, a reference who bought a home unit tells you about the provider's office, not about the terms on your paper. Ask each reference about the same parts of the job you care about: how the claim was started, how long the repair authorization took, whether a refusal was explained in writing, and whether the work was done at the place you would use.
Questions to put to each reference
Keep the questions the same for every reference so the answers can be laid side by side. Ask whether the reference read the contract before buying, whether the terms matched what the salesperson described, what the reference was told about cancellation, and whether the reference knows how a waiting period or an exclusion was applied. Write down when the reference was last in contact with the provider. A reference from the sales period tells you little about the claim period.
Check the references you were not given
The names on a list are the easiest names to find. Ask the provider how many contracts it has sold in your state and where its written refusal reasons are kept. If the provider will not answer, that refusal is itself information. Then look up the state's roster for the regulated product and compare the roster's as-of date to the date on the paper the provider hands you. A roster entry is a listing, not a rating of quality. The state pages on this site print each roster in full on its as-of date and say which states this edition has not read, so use those published tables rather than the provider's own word about its standing.
What the reference list does not decide
A good reference list does not replace the contract. Read the terms that matter most to you, including the definition of the failure that starts a claim, the exclusions, the cancellation return, and the transfer rule. A reference can tell you how a claim felt. Only the paper tells you what the contract promises. Keep your notes with the signed copy so you can compare the paper you were sold against the reference you were told about.
Method
This is a general explainer. It does not name any provider, rank any provider, or state what any contract covers, costs, excludes, or requires. It has not read any particular provider's paper, and it makes no promise about how any claim will be decided. It is general information, not professional counsel. Use the state's own roster and statute as your starting point.