---
updatedAt: 2026-01-22T11:10:15.000Z
---

# User-agent and IP allow-listing for feed sources

For Product and Variation feeds

To ensure that your feed can sync, you must ensure that your feed sources are accessible, as follows:

* If you're using URL feed sources, ensure your infrastructure allows incoming requests from agents that send the following header in the requests: `User-Agent: DFW/4.0`
* If you rely on IP-based allow-listing, you must allow the following IP addresses to ensure proper functionality:

[block:parameters]
{
  "data": {
    "h-0": "EU IPs",
    "h-1": "US IPs",
    "0-0": "18.197.234.165  \n3.127.189.219  \n18.158.108.19  \n18.192.189.87  \n18.195.163.252",
    "0-1": "3.92.38.28  \n3.227.221.249  \n54.145.37.112  \n75.101.154.167  \n52.206.34.55"
  },
  "cols": 2,
  "rows": 1,
  "align": [
    "left",
    "left"
  ]
}
[/block]