Allowlist our IP addresses
If you use a firewall or an allowlist, you may need to allow traffic from our IP addresses to support traffic from Customer.io based on the features you use.
If you use a custom SMTP server, webhooks, Reverse ETL, our Salesforce integration, or an outgoing data warehouse integration, you may need to allow our IP addresses to support traffic from Customer.io.
Some IP addresses depend on your account region.
| Email (Custom SMTP) and Webhook IP Addresses |
|---|
| US Region | EU Region |
|---|
| 35.188.196.183 | 34.76.143.229 |
| 104.198.177.219 | 34.78.91.47 |
| 104.154.232.87 | 34.77.94.252 |
| 130.211.229.195 | 35.187.188.242 |
| 104.198.221.24 | 34.78.122.90 |
| 104.197.27.15 | 35.195.137.235 |
| 35.194.9.154 | 130.211.108.156 |
| 104.154.144.51 | 104.199.50.18 |
| 104.197.210.12 | 34.78.44.80 |
| 35.225.6.73 | 35.205.31.154 |
| 136.111.237.157 | |
| 34.10.127.179 | |
| Reverse ETL IP Addresses (data-in) |
|---|
| US Region | EU Region |
|---|
| 34.29.50.4 | 34.22.168.136 |
| 35.222.130.209 | 34.78.194.61 |
| 34.122.196.49 | 104.155.37.221 |
| Salesforce IP Addresses |
|---|
| US Region | EU Region |
|---|
| 34.29.50.4 | 34.22.168.136 |
| 35.222.130.209 | 34.78.194.61 |
| Data Warehouse IP Addresses (data-out) |
|---|
| US Region | EU Region |
|---|
| 34.71.192.245 | 34.118.255.179 |
| 35.188.196.183 | 34.76.143.229 |
| 104.198.177.219 | 34.78.91.47 |
| 35.184.88.76 | 35.187.55.80 |
| 34.72.101.57 | 104.199.99.65 |
| 34.123.199.33 | 34.76.81.2 |
| 35.222.137.61 | 34.77.146.181 |
| 34.68.113.63 | 34.140.234.108 |
| 35.240.84.170 |
| 35.195.54.15 |
| 34.38.105.52 |
| 104.155.66.230 |
| 34.76.119.61 |
| 34.140.67.73 |
| 34.78.74.81 |
