DataForSEO team has added more capabilities to handle your requests to the On-Page API better.
The following servers with the corresponding IP addresses are added:
So, the full list of IPs is represented below:
You might need to know the IPs in case you are building features on top of On-Page API. If you customers complain that their website is not scanned and audited, they should white-list mentioned IPs. It will allow our crawler to access their pages and audit everything properly.