> ## Documentation Index
> Fetch the complete documentation index at: https://www.checklyhq.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Phone Calls

> Configure phone call notifications for critical alerts and emergency escalation

> [!TIP]
>
> **Monitoring as Code**: Learn more about the [Phone Call Alert Channel Construct](https://www.checklyhq.com/docs/constructs/phone-call-alert-channel.md).

The phone numbers used for phone call alerting need to be in [E.164 format](https://www.twilio.com/docs/glossary/what-e164). Stick to the following rules, and you'll be fine:

* Prepend international access codes with a + sign
* Do not use any white spaces
* Use up to 15 characters

![send monitoring alerts with phone calls](https://mintcdn.com/checkly-422f444a/riTtJrRZAx73iREC/images/docs/images/alerting/phone-call.png?fit=max\&auto=format\&n=riTtJrRZAx73iREC\&q=85\&s=9c93cba871eb93c8fd8359301e9ff2ff)

You can add as many phone number channels as you like.

## Supported countries and regions

| Country |
| - |
| Argentina (+54) |
| Australia (+61) |
| Austria (+43) |
| Belgium (+32) |
| Brazil (+55) |
| Canada (+1) |
| Chile (+56) |
| Czech Republic (+420) |
| Denmark (+45) |
| France (+33) |
| Germany (+49) |
| Hungary (+36) |
| Iceland (+354) |
| India (+91) |
| Israel (+972) |
| Italy (+39) |
| Liechtenstein (+423) |
| Lithuania (+370) |
| Luxembourg (+352) |
| Malta (+356) |
| Mexico (+52) |
| Netherlands (+31) |
| Norway (+47) |
| Paraguay (+595) |
| Poland (+48) |
| Portugal (+351) |
| Spain (+34) |
| Switzerland (+41) |
| United Arab Emirates (+971) |
| United Kingdom (+44) |
| United States (+1) |
| Uruguay (+598) |
| Vietnam (+84) |

> [!NOTE]
>
> If your country is not supported feel free to reach out to our [support team](mailto:support@checklyhq.com).

## Phone call number and sender ID

Phone call alerts always use the following number: +18142508623. You can save the number as a contact to allow alerts bypassing any do-not-disturb settings.

> [!NOTE]
>
> For limits and other phone call related questions, please refer to our [Pricing page](https://www.checklyhq.com/pricing/#features).


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