Start at https://www.iplocation.net/
For each company that got it wrong, you can find a link to their site, and hopefully a way to inform them of their error.
You could also try acorn and britbox I suppose, and let them do it.
The IPv4 address location errors are currently the only ones that count, since Roku doesn't use IPv6. If and when that changes, that might bring in a whole lot more of these problems.
