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Add 83.71.142.253 to any IP allowlist used for your Phonovation integration. Connections use HTTPS on TCP port 443 with TLS 1.2.

Network flow

Outbound rules

Allow HTTPS connections to the hostname your integration uses: If your firewall requires an IP rule, allow 83.71.142.253 on TCP port 443 and permit TLS 1.2.

Inbound webhook rules

Expose the HTTPS webhook URL configured in the account portal and allow traffic from 83.71.142.253 on TCP port 443. The IP allowlist is an additional network control. It does not replace X-Signature verification or idempotent event handling described in Webhooks.