I used to work in this space, and you could only buy retargeting ads based on cookies. Adwords/doubleclick don't let you specify target IPs: https://support.go

I used to work in this space, and you could only buy retargeting ads based on cookies. Adwords/doubleclick don't let you specify target IPs: https://support.google.com/adwords/answer/6322?hl=en https://support.google.com/adwords/answer/6322?hl=en If you really wanted to you could do cookie syncing based on IP, but does anyone actually do that?