---
title: "Add phone numbers to a list"
method: POST
path: "/signals/1/trusted-msisdns"
tags: ["platform", "signals", "trusted-phone-numbers-1"]
---

# Add phone numbers to a list

`POST /signals/1/trusted-msisdns`

## Request

- Base URL: `https://api.infobip.com` (the document declares no server; this is the origin it was published from)
- URL: `https://api.infobip.com/signals/1/trusted-msisdns`
- Auth: one of:
  - OAuth 2
    - Client credentials
    - Token URL: `https://api.infobip.com/auth/1/oauth2/token`
  - API key in header `Authorization`
  - API key in header `Authorization`
  - HTTP basic

Add phone numbers to a trusted MSISDN list so that Signals never blocks messages sent to these numbers.


**Intended for non-CPaaSX accounts.** CPaaSX accounts should use the CPaaSX Signals trusted MSISDNs API.

## Request body

- 6ac22f6f3346b6db1d4c8464d58b1329c30df516bb4206699a93fd8658df38c7TrustedMsisdnRequest: Trusted MSISDN request object.
  - `phoneNumbers` string[], required: Phone numbers (in MSISDN or international format) to add to or remove from the trusted MSISDN list.

## Response `200`

OK

## Other responses

- `400`: Bad request
- `401`: Unauthorized
- `403`: Forbidden
- `429`: Too Many Requests
- `500`: Internal Server Error

---

[API](https://skmtc.dev/infobip/apis/infobip-openapi-specification.md) - [All operations](https://skmtc.dev/infobip/apis/infobip-openapi-specification/llms.txt) - [OpenAPI document](https://skmtc.dev/infobip/apis/infobip-openapi-specification/revisions/9dcbbaf902de?raw)