SIC codes are 4-digit industry classifications that standardize company categorization. Using SIC codes for targeting is more precise than broad industry labels because they ensure consistency regardless of how companies describe themselves.
SIC codes (Standard Industrial Classification) are four-digit numerical codes assigned to businesses based on their primary economic activity. Understanding SIC codes gives you precise control over industry targeting in your B2B prospecting — far more accurate than broad industry labels like "Technology" or "Healthcare."
How SIC Codes Work
The SIC system divides the economy into major divisions (identified by the first two digits) and progressively narrower subdivisions. For example, SIC 73 covers "Business Services," SIC 737 covers "Computer Programming, Data Processing," and SIC 7372 covers "Prepackaged Software." The more digits you specify, the more precisely you target. This hierarchy lets you cast a wide net (all business services) or drill down to exactly the companies you want (prepackaged software specifically).
Why SIC Codes Matter for Prospecting
Industry labels on LinkedIn and in generic databases are inconsistent — one company might list themselves as "Technology" while a competitor calls themselves "Software" and another says "Information Technology." SIC codes standardize this classification, so when you search for SIC 7372, you get every prepackaged software company regardless of how they describe themselves. This consistency dramatically improves the accuracy of your prospect lists.
Using SIC Codes in LeadFluxA
LeadFluxA includes SIC code data for companies in Pro and Enterprise plans. When you view a lead's detail page, the company's primary SIC code tells you exactly what industry they operate in. You can use this data to segment your exports by precise industry classification, ensuring your outreach messaging is tailored to each segment's specific needs and language.
Common SIC Codes for B2B Sales
Some of the most targeted SIC codes for B2B prospecting include 7372 for prepackaged software, 7371 for computer programming services, 6021 for national commercial banks, 6411 for insurance agents, 8011 for offices and clinics of doctors, 5065 for electronic parts and equipment, and 3825 for instruments for measuring. Knowing which SIC codes contain your ideal customers sharpens every aspect of your prospecting.
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