Dialed Number Identification Service (DNIS)

Owned by Rob Whyte (Unlicensed)
Last updated: Oct 06, 2022 by Kelly Evans (Unlicensed)
1 min read

Dialed Number Identification Service (DNIS) refers to the telephone service that acts as an identifier for the receiver of a call. It is the number that the caller dialed.

This is a common feature of 800 and 900 lines. If you have multiple 800 or 900 numbers going to the same destination, the DNIS indicates which number was called.