# View registration history

Use **Registration History** to review when an inbound SIP trunk was
successfully registered and had an active Contact address for call routing.
You can inspect the registration details for a selected interval and zoom in
to review a specific period.

## Before you begin

- An active DIDWW account is required. [Sign in to DIDWW](https://my.didww.com/users/sign_in).
- An existing SIP trunk using [Dynamic Registration](../sip-routing-methods.html#inbound-sip-dynamic-registration-routing) is required. Registration
  history is not available for Static Endpoint trunks.

## Step 1: Open Registration History

1. In the DIDWW User Panel, go to **Voice > Inbound Trunks**.
2. Locate the Dynamic Registration trunk and open its **Actions** menu.
3. Select **View Registration history**.

[![Inbound Trunks Actions menu with View Registration history highlighted](../../../../_images/view-registration-history-menu.webp)](../../../../_images/view-registration-history-menu.webp)


**Fig. 1.** Open Registration History

## Step 2: Inspect a registration interval

The chart displays successful registration intervals for the **last 7 days**
in **one-minute intervals**. If there were no successful registrations during
this period, the chart has no registration data to display.

Note

The chart shows when a registration was active. It does not display
individual SIP `REGISTER` requests or failed registration attempts.

Hover over a point in the chart to view the registration details for that
interval. Each registered endpoint appears as a separate series, for example
**Reg 1** and **Reg 2**. A trunk supports up to 10 simultaneous registrations.

| **Field** | **Description** |
| --- | --- |
| **Contact** | The Contact address used by your system during registration. |
| **User Agent** | The User-Agent string reported by the registering system. |
| **IP/Port** | The source IP address and port used for the registration. |
| **Protocol** | The transport protocol used for the registration (UDP, TCP, or TLS). |
| **Expires** | The registration lifetime (Expires value) provided by your endpoint. |

[![Registration History chart with a tooltip showing Contact, User Agent, IP/Port, Protocol, and Expires for two registrations](../../../../_images/registration_statistics2.png)](../../../../_images/registration_statistics2.png)


**Fig. 2.** Inspect registration details

## Step 3: Zoom in on a time range

Click and drag across the chart to select the time range you want to review.
The chart zooms in on the selected period. When you finish reviewing the
history, click **Close**.

[![Selecting a time range by dragging across the Registration History chart to zoom in](../../../../_images/registration_statistics_gif.gif)](../../../../_images/registration_statistics_gif.gif)


**Fig. 3.** Zoom in on a selected time range

## Related resources

- [View SIP registration credentials](view-sip-registration-credentials.html) - Find the username, password, and
  registration endpoints for the trunk.
- [Dynamic Registration routing](../sip-routing-methods.html#inbound-sip-dynamic-registration-routing) - Learn how registered Contact
  addresses are used for incoming calls.
- [Manage SIP trunks](manage-sip-trunks.html) - View, edit, or delete an
  existing SIP trunk.

On this page