An incoming prefix route matches inbound calls by the caller's number prefix and sends them to a specific call flow. Every call from
+352goes to the Luxembourg-language flow. Every call from+49goes to the German-language flow. The rule is keyed by the calling number, not by the number that was dialled.
Overview
Incoming prefix routes give you per-geography routing without per-DID configuration: on a single dialled number, a Luxembourg caller hears the French flow, a German caller the German flow, and everyone else the default.
What it does
Each rule pairs a caller-number prefix with the call flow to send matching calls to. One rule can also be marked as the default, whose call flow handles incoming calls that match no other prefix route.
At call time the telephony platform compares the caller's number against your active rules and sends a matching call to that rule's call flow, falling back to the default route when nothing else matches. The matching itself, including how overlapping prefixes are resolved and what happens when no rule and no default apply, is carried out by the telephony platform and is not configured on this page.
See also
- Call flows - the routing destinations.
- Phone numbers - the dialled-number routing that prefix rules can override.
- Route outgoing calls - the outbound counterpart (same shape, opposite direction).