D&B SIC — quick reference

Saved 2026-04-28 evening. For Wednesday morning read-through while drafting deliverables.

D&B SIC vs. standard SIC

Standard SIC = 4-digit codes, OMB-published, last revised 1987. Example: 7372 = Prepackaged Software. Coarse — bundles too many distinct businesses into one bucket.

D&B SIC = D&B's proprietary 8-digit extension. Same first 4 digits as the OMB standard, plus 4 additional digits of finer granularity that D&B maintains and updates.

Code	Meaning
`7372`	Prepackaged Software (standard SIC, 1987 taxonomy)
`73720000`	Same — D&B padded baseline
`73720100`	Application software
`73720200`	Database management software
`73720300`	System software
`73720500`	Software development tools

Why this matters for the recommendation

This solves a problem the recommendation would otherwise have:

Standard 4-digit SIC is too coarse for modern SaaS / cloud / platform companies. Apple Records and Apple Music probably both fall under SIC 7929 (Bands, Orchestras, Actors) or 7812 (Services–Motion Picture / Video Production). Functionally useless for ICP scoring.
D&B SIC distinguishes them at the 8-digit level while keeping the 4-digit prefix recognizable to compliance teams.
Legal team sees the 4-digit prefix → defensible standard SIC.
RevOps team sees the 8-digit code → segmentation granularity for territory routing / ABM targeting.

How this sharpens the TC + D&B synthesis (Section 12 of the observations file)

Layer	What it carries
LLM output	Free-text industry string (real-time, fresh, ungrounded)
Mapped to D&B SIC 8-digit	Modern granularity (RevOps usable)
Truncated to 4-digit prefix	Standard SIC (legal-defensible)
D&B agreement check	Confidence signal

Demo line:

"D&B's classification isn't just SIC — it's an 8-digit extension of SIC, with the 4-digit prefix being the regulator-recognized standard. That gives you both surfaces from one source: legal sees the standard 4-digit code, RevOps sees the 8-digit granularity. TC doesn't have to invent a taxonomy. D&B has done that work since the 1960s, kept it anchored to regulatory standards, and it's already integrated into TC's data model."

Three problems solved in one move:
1. Taxonomy gap (Section 11 — three competing taxonomies)
2. Legal / compliance hand-off problem (Section 4, Section 5)
3. RevOps granularity need (Section 4, Signal 4)

Caveats

D&B SIC is proprietary to D&B — you have to be a D&B customer to access the 8-digit codes. The 4-digit standard SIC is public.
NAICS (the current OMB standard, replacing SIC since 1997) has its own 6-digit codes. Some compliance frameworks accept either; SEC filings still often use SIC.
Whether to surface SIC or NAICS or both depends on the customer's compliance regime — possibly a configuration option, definitely a conversation with TC's customer base.