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

# How to Configure IP Mapping

> Whitelist trusted carrier IP addresses in Ringingo so inbound SIP traffic is accepted only from the sources you approve.

IP Mapping defines a whitelist of trusted IP addresses from which the Ringingo platform is accepting inbound SIP traffic. Any SIP INVITE arriving from an unlisted IP address is being rejected at the platform perimeter.

<Steps>
  <Step title="Navigate to IP Mapping">
    Go to **Incoming Rules → IP Mapping** in the left sidebar menu.
  </Step>

  <Step title="Create a new IP Mapping">
    Click **+ Create IP Mapping**.
  </Step>

  <Step title="Fill in the fields">
    | Field         | Description                                                                                                                                                             |
    | ------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
    | IP (required) | The source IP address or CIDR block (e.g. 203.0.113.10 or 203.0.113.0/24) of the trusted carrier or network device.                                                     |
    | Set Prefix    | An optional digit prefix to prepend to the inbound caller ID number for calls arriving from this IP source. Useful when a carrier sends numbers without a country code. |
    | Status        | Enable to activate the whitelist entry immediately.                                                                                                                     |
  </Step>

  <Step title="Save the mapping">
    Click **Save**.
  </Step>
</Steps>

<Warning>
  Only add IP addresses from verified and trusted SIP carriers or network sources. An incorrectly whitelisted IP address may allow unauthorised SIP traffic to reach the platform, resulting in toll fraud or call spoofing.
</Warning>

<Warning>
  Every SIP carrier or trunk provider that sends inbound calls to Ringingo must have its source IP address added here. If a carrier's IP is not in the IP Mapping table, all calls from that source are being silently rejected.
</Warning>