Get Sic Naics Labels

SIC + NAICS code → human-readable label lookups.

Returns the name of a code at every level we carry:

• SIC 2-digit major groups (~83 entries) and 3-digit industry groups (~415, the 1987 SIC Manual's own titles)
• SIC 4-digit industries (~960 entries, from bpluly crosswalk + fallbacks)
• NAICS 2-digit sectors and 3/4/5-digit subsectors, industry groups and industries (the Census Bureau's 2017 titles)
• NAICS 6-digit national industries (~990 entries)
• Google Business category display names and MCC descriptions

SIC 677 sits on some records but is not a 1987 industry group, so it has no title — a code is never given a guessed name.

Cached for process lifetime. Frontend fetches once on page load and joins client-side to render meaningful filter chips, detail page rows, and CSV export headers.