Since SIC/NAICS codes are self-reported and often a business organization has more than one reported, it can be hard to determine what is “correctly identify”. Working with the codes is often more of an art form than science, although the science principle of test and test again truly applies.
If you have a complete company name, address and main phone number you can have the codes appended to your data. In considering working up market share analysis you also determine what other demographics should be appended to the data at the same time. Do you segment your customers and prospects by their annual sales volume, number of employees or other items like number of PCs or advertising spent? The quality of the segmentation demographics you need will lead you to the right list provider.
InfoGrow provides data hygiene and market share analysis services, so if this is something you've wondered or would like to learn more about, please visit: www.infogrowcorp.com/marketanalysis.