Dynamic Number Insertion (DNI) Explained
How DNI swaps phone numbers by source or session, what commonly breaks, and how to QA before campaigns launch.
Last updated: March 29, 2026
Foundation: what is call tracking and how call tracking works. NAP considerations: NAP and listings.
Product depth: CallRail, call tracking comparisons.
QA checklist
Don’t ship Friday without this.
- •Test organic, paid, and direct sessions side by side
- •Verify number persists through first navigation click
- •Confirm CRM receives source metadata on inbound calls
FAQs
Quick answers.