> For the complete documentation index, see [llms.txt](https://knowledgebase.offer18.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://knowledgebase.offer18.com/universal/ips-whitelist.md).

# IPs Whitelist

**At a glance**: Offer18's IP addresses are used for

* API outgoing requests
* Offer SYNC
* S2S Postback to Affiliates

```
 Whitelist IP - 35.230.165.242, 34.145.129.198, 35.245.65.44
```