Call Blocking Rules

Create call blocking rule

Changed on Oct 1, 2026

Create a call blocking rule for the specified project.

post/v1/projects/{projectId}/callBlockingRules

Request

Base URL
https://elastic-trunking.api.sinch.com
URL
https://elastic-trunking.api.sinch.com/v1/projects/{projectId}/callBlockingRules
Auth
- HTTP basic
- or OAuth 2
  Client credentials
  Token URL: https://auth.sinch.com/oauth2/token

Path parameters

projectIdstring required

Example:3acb7ae1-cf3d-4112-ba5e-3a9d8c71cd47

The projectId is a required parameter you must include when making any API calls. You can find your project ID on your Build dashboard.

Request body

namestring

The name for the call blocking rule.

direction'INBOUND' | 'OUTBOUND' required

The direction of the call blocking rule. Can be either INBOUND or OUTBOUND.

callerCountrystring

The country code of the inbound call.

calleeCountrystring

The country code of the outbound call.

callerMatchstring

Use this field to match the prefixes of an inbound call's phone number.

calleeMatchstring

Use this field to match the prefixes of an outbound call's phone number.

idstring

The ID of the call blocking rule.

Example request

{
  "name": "My Call Block Rule",
  "direction": "INBOUND",
  "callerCountry": "US",
  "calleeCountry": "CA",
  "callerMatch": "123",
  "calleeMatch": "456",
  "id": "01KG5BN8Z0HSR2P9GM3K9YA8RE"
}

Response